Geant4 Cross Reference

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Geant4/geometry/magneticfield/History

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Diff markup

Differences between /geometry/magneticfield/History (Version 11.3.0) and /geometry/magneticfield/History (Version 10.3.p3)


  1 # Category field History                       <<   1 $Id: History 106565 2017-10-13 09:20:14Z gcosmo $
                                                   >>   2 -------------------------------------------------------------------
  2                                                     3 
  3 See `CONTRIBUTING.rst` for details of **requir <<   4      =========================================================
  4 which **must** added in reverse chronological  <<   5      Geant4 - an Object-Oriented Toolkit for Simulation in HEP
  5 It must **not** be used as a substitute for wr <<   6      =========================================================
  6                                                <<   7 
  7 ---------------------------------------------- <<   8                       Category History file
  8                                                <<   9                       ---------------------
  9 ## 2024-11-26 Ivana Hrivnacova (field-V11-02-0 <<  10 This file should be used by G4 developers and category coordinators
 10 - Better names for the G4EquationType enum con <<  11 to briefly summarize all major modifications introduced in the code
 11                                                <<  12 and keep track of all category-tags.
 12 ## 2024-11-04 Philippe Canal (field-V11-02-05) <<  13 It DOES NOT substitute the  CVS log-message one should put at every
 13 - Improve stability of static initialization f <<  14 committal in the CVS repository !
 14   StepperDescription() in G4DormandPrince745.  <<  15 
 15                                                <<  16      ----------------------------------------------------------
 16 ## 2024-09-10 Ivana Hrivnacova (field-V11-02-0 <<  17      * Reverse chronological order (last date on top), please *
 17 - Coverity fixes:                              <<  18      ----------------------------------------------------------
 18   - Use std::move, const auto& instead of auto << 
 19                                                << 
 20 ## 2024-06-20 Ivana Hrivnacova (field-V11-02-0 << 
 21 - Fix in G4FieldBuilder for local fields:      << 
 22   apply the local fields in the order of user  << 
 23                                                << 
 24 ## 2024-04-29 Ivana Hrivnacova (field-V11-02-0 << 
 25 - Added classes for automatic field constructi << 
 26   - G4FieldBuilder[Messenger], G4FieldParamete << 
 27   - No changes in other Geant4 classes         << 
 28                                                << 
 29 ## 2024-04-17 Ben Morgan (field-V11-02-01)     << 
 30 - Fix maybe-uninitialized warnings found in AT << 
 31   - Reported in internal ATLASSIM-6058 ticket. << 
 32                                                << 
 33 ## 2024-04-02 Gabriele Cosmo (field-V11-02-00) << 
 34 - Applied trivial clang-tidy fixes to classes, << 
 35   constructor/destructor, auto and using state << 
 36 - Minor cleanup in QSS classes.                << 
 37                                                << 
 38 ## 2023-11-03 Gabriele Cosmo (field-V11-01-06) << 
 39 - Reinstated default DormandPrince745 stepper. << 
 40                                                << 
 41 ## 2023-10-27 Lucio Santi (field-V11-01-05)    << 
 42 - Improvements on the QSS Stepper              << 
 43   The main QSS integration loop is interrupted << 
 44   exceeds a predefined threshold (set to 1000  << 
 45                                                << 
 46 ## 2023-06-14 Gabriele Cosmo (field-V11-01-04) << 
 47 - Applied clang-tidy fixes (readability, moder << 
 48                                                << 
 49 ## 2023-06-12 John Apostolakis (field-V11-01-0 << 
 50 - Inclusion of QSS integration method.         << 
 51   Most recent changes:                         << 
 52   * Fixes for issue with SetPrecision (used un << 
 53   * Updated values of parameters in G4Propagat << 
 54   * Withdrew interim changes that made QSS the << 
 55                                                << 
 56 ## 2023-05-26 Lucio Santi                      << 
 57 - Fixes for open issues:                       << 
 58   * default values for QSS made stricter dQRel << 
 59     to improve behaviour in full experiment te << 
 60   * implemented missing DistChord method -- ne << 
 61                                                << 
 62 ## 2023-01-31 John Apostolakis                 << 
 63 - Initial inclusion of QSS integration method. << 
 64   Renamed classes to include 'G4' prefix, and  << 
 65   Added Geant4 disclaimer / license to files.  << 
 66   Removed QSSmessenger from RunManager and G4P << 
 67 - Temporarily made QSS the default method for  << 
 68                                                << 
 69 ## 2023-01-30 Rodrigo Castro, Lucio Santi & Le << 
 70 - Included Quantum State Simulation (QSS) inte << 
 71   Alternative method of integration which crea << 
 72   functions for each coordinate (x,p) - changi << 
 73   polynomials when the deviation from exact so << 
 74   a threshold value.                           << 
 75   Offers built-in interpolation capability - e << 
 76   of the intersection of the trajectory with s << 
 77   Currently restricted to using only with a pu << 
 78   Created by Rodrigo Castro and Lucio Santi, w << 
 79   by Leandro A. Gómez Vidal (and others?)     << 
 80                                                << 
 81 ## 2023-03-16 Ben Morgan (field-V11-01-02)     << 
 82 - Fixed compilation warnings on clang-15 for m << 
 83   in input parameters for steppers.            << 
 84                                                << 
 85 ## 2023-01-09 Ben Morgan (field-V11-01-01)     << 
 86 - Use PROJECT_ scoped _SOURCE/BINARY_DIR varia << 
 87   scope version to ease use of Geant4 as a CMa << 
 88   - Fixes [GitHub PR #52](https://github.com/G << 
 89                                                << 
 90 ## 2022-12-09 Laurie Nevay             (field- << 
 91 - Reduced printout for setting any valid value << 
 92   G4FieldManager.                              << 
 93                                                << 
 94 ## 2022-11-28 Gabriele Cosmo           (field- << 
 95 - Fixed restore of stream precision in G4Field << 
 96                                                << 
 97 ## 2022-11-14 John Apostolakis         (field- << 
 98 - Revised G4FieldManager to ensure that epsilo << 
 99   are less than a 'maximum accepted' accuracy  << 
100   behaviour of the integration. Improved their << 
101    - warnings if min > max, with corrective be << 
102    - a fatal exception in case of values outsi << 
103                                                << 
104   To cope with needs of legacy applications or << 
105   the value of the 'ceiling' maximum accepted  << 
106   the new static method                        << 
107        G4FieldManager::SetMaxAcceptedEpsilon(  << 
108   but must remain under or equal to a final ce << 
109        fMaxFinalEpsilon=0.03                   << 
110                                                << 
111 ## 2022-11-10 Gabriele Cosmo (field-V11-00-03) << 
112 - Fixed compilation warnings for implicit type << 
113                                                << 
114 ## 2022-11-05 Divyansh Tiwari, John Apostolaki << 
115                                                << 
116 - Introduced G4BorisScheme and G4BorisDriver,  << 
117   integration method, created as part of GSoC  << 
118                                                << 
119 ## 2022-10-05 Gabriele Cosmo (field-V11-00-01) << 
120 - Fixed compilation warnings on Intel/icx comp << 
121   but not used.                                << 
122                                                << 
123 ## 2021-12-10 Ben Morgan (field-V11-00-00)     << 
124 - Change to new Markdown History format        << 
125                                                << 
126 ---                                            << 
127                                                << 
128 # History entries prior to 11.0                << 
129                                                << 
130 March 30, 2021 B.Morgan                        << 
131 -----------------------                        << 
132 - Migrate sources.cmake to modular build API   << 
133                                                << 
134 November 26, 2020 J.Apostolakis                << 
135 -------------------------------                << 
136 - Fix to enable G4TDormandPrince45 to be used  << 
137                                                << 
138   This fix was needed because G4Interpolation  << 
139   copies of the stepper class.  Due to this it << 
140   with the type of the templated stepper.      << 
141                                                << 
142   For a stepper to be used with 'G4Interpolati << 
143   implement the method                         << 
144      Equation_type  GetSpecificEquation()      << 
145   Templated steppers must ensure that the retu << 
146   is the specific equation type of the templat << 
147                                                << 
148   This method was added to G4DormandPrince745  << 
149                                                << 
150 October 12, 2020 J.Apostolakis                 << 
151 ------------------------------                 << 
152 - Fixes & refinements - mostly in templated cl << 
153   Compilation fixes, e.g. missing include <cas << 
154   Refinements, e.g. int -> unsigned int in tem << 
155                                                << 
156 October 9, 2020 J.Apostolakis                  << 
157 -----------------------------                  << 
158 - Configure G4ChordFinder to use templated G4T << 
159   default stepper for magnetic fields (when on << 
160   explicitly by the application.)              << 
161                                                << 
162 October 9, 2020 J.Apostolakis & J. Xie         << 
163 --------------------------------------         << 
164 - Adapted classes that avoid virtual calls for << 
165   created by Josh Xie (Google Summer of Code 2 << 
166   S. Wenzel & J.A.                             << 
167                                                << 
168   The revised design and implementations inclu << 
169    * equation of motion templated on the field << 
170    * steppers templated on the type of equatio << 
171      variables.                                << 
172   In addition the key methods are marked as 'i << 
173   they judge possible, to embed them and avoid << 
174                                                << 
175   These classes can be combined also with the  << 
176   (G4IntegrationStepper, G4FSALIntegrationStep << 
177   to avoid virtual calls in all the levels up  << 
178   the integration driver. ]                    << 
179                                                << 
180   The types of stepper currently available are << 
181   i) the originally developed intermediate ord << 
182                                                << 
183    - Name (templated) -  original  --   Order/ << 
184                                            / E << 
185    =========================================== << 
186    G4TClassicalRK4:     G4ClassicalRK4   4th / << 
187    G4TCashKarpRKF45:    G4CashKarpRKF45  5th / << 
188                                                << 
189   ii) the original low order steppers (for spe << 
190    G4TSimpleHeum:       G4SimpleHeum     3rd / << 
191    G4TSimpleRunge:      G4SimpleRunge    2nd / << 
192    G4TExplicitEuler:    G4ExplicitEuler  1st / << 
193                                                << 
194   and                                          << 
195   iii) some newly adapted stepper(s) /  ( J.A. << 
196    G4TDormandPrince45  G4DormandPrince745 5th/ << 
197    =========================================== << 
198                                                << 
199   Note: Additional lower-order steppers are no << 
200         'Vector' steppers (using blaze) are no << 
201                                                << 
202   Experimental versions of fields with inline  << 
203      G4TUniformMagField,  G4TQuadrupoleMagFiel << 
204   are included to show how the field evaluatio << 
205                                                << 
206   Note 2:                                      << 
207   Steppers which are not embedded obtain their << 
208   breaking the step into two halves, then comp << 
209   As a result many more field / derivative eva << 
210   embedded steppers of the same order, but the << 
211   estimation has different properties; so it m << 
212                                                << 
213 June 15, 2020 G.Cosmo                          << 
214 ---------------------                          << 
215 - Implemented move constructor and operator fo << 
216                                                << 
217 March 24, 2020 J.Apostolakis                   << 
218 ----------------------------                   << 
219 - New class G4DriverReporter to print progress << 
220    Used for debugging differences between Old  << 
221 - Revisions in testing CMake config file and s << 
222    for magnetic field.                         << 
223                                                << 
224 March 13, 2020 J.Apostolakis                   << 
225 ----------------------------                   << 
226 - G4VIntegrationDriver & dependent driver clas << 
227     Added new virtual StreamInfo() method,     << 
228        & used it to implement operator << for  << 
229     Made (virtual) DoesReIntegrate() const.    << 
230 - G4MagInt_Driver: Fixed max iterations & clar << 
231      ComputeNewStepSize does NOT (yet) respect << 
232   ( Done to enable comparisons with new G4Inte << 
233 - G4OldMagIntDriver maintains all old behaviou << 
234                                                << 
235                                                << 
236 January 22, 2020 G.Cosmo                       << 
237 ------------------------                       << 
238 - Fixed compilation errors and configuration f << 
239                                                << 
240 January 13, 2020 G.Cosmo                       << 
241 ------------------------                       << 
242 - Turn off verbosity flags by default in G4Int << 
243   G4InterpolationDriver and G4MagIntegratorDri << 
244                                                << 
245 December 10, 2019 B.Morgan                     << 
246 --------------------------                     << 
247 - Cleanup CMake build, removing obsolete granu << 
248   explicit include_directories.                << 
249                                                << 
250 November 14, 2019 J.Apostolakis                << 
251 -------------------------------                << 
252 - Added method / attribute to G4VIntegrationDr << 
253    to inform whether the driver recomputes seg << 
254    AccurateAdvance is called.                  << 
255                                                << 
256 October 27, 2019 D.Sorokin                     << 
257 ----------------------------                   << 
258 - Remove statistics printouts from destructor  << 
259                                                << 
260 October 24, 2019 H.Burkhardt                   << 
261 ----------------------------                   << 
262 - Standard sextupole magnet first implementati << 
263                                                << 
264 October 18, 2019 D. Sorokin                    << 
265 -----------------------------------------      << 
266 - Fix floating point exception in G4BFieldInte << 
267                                                << 
268 October 1, 2019 G. Cosmo                       << 
269 -----------------------------------------      << 
270 - Fixed unitialised data in G4EqMagElectricFie << 
271   reported by Coverity.                        << 
272                                                << 
273 September 12, 2019 G. Cosmo                    << 
274 -----------------------------------------      << 
275 - Minor C++11 revision. Code formatting and cl << 
276                                                << 
277 July 8, 2019 D. Sorokin                        << 
278 -----------------------------------------      << 
279 - G4BFieldIntegrationDriver: an attempt to sol << 
280                                                << 
281 July 3, 2019 D. Sorokin                        << 
282 -----------------------------------------      << 
283 - Make G4InterpolationDriver default for perfo << 
284                                                << 
285 June 25, 2019 D. Sorokin                       << 
286 -----------------------------------------      << 
287 - Fix Dormand-Prince 5th order interpolation m << 
288                                                << 
289 June 20, 2019 D. Sorokin                       << 
290 -----------------------------------------      << 
291 - New version of G4InterpolationDriver with mu << 
292                                                << 
293 June 12, 2019 D. Sorokin & J. Apostolakis      << 
294 -----------------------------------------      << 
295 - Revert to use G4IntegrationDriver as default << 
296     ( c-tor for magnetic field. ).             << 
297   Change to use concrete type of Stepper as te << 
298                                                << 
299 June 10, 2019 Dmitry Sorokin                   << 
300 -------------------------                      << 
301 - Remove division in G4DormandPrince745::Inter << 
302                                                << 
303 June 7, 2019 Dmitry Sorokin                    << 
304 -------------------------                      << 
305 - Switch to original chord finding algorithm i << 
306 - Reset step estimate in G4MagInt_Driver only  << 
307 - Change G4VERBOSE to G4FIELD_DEBUG in G4Inter << 
308                                                << 
309 June 4, 2019 Dmitry Sorokin                    << 
310 -------------------------                      << 
311 - Use FSAL property of G4DormandPrince745 in G << 
312                                                << 
313 June 3, 2019 Dmitry Sorokin                    << 
314 -------------------------                      << 
315 - Fix memory churn in G4InterpolationDriver.   << 
316                                                << 
317 May 20, 2019 Dmitry Sorokin                    << 
318 -------------------------                      << 
319 - Make interpolation driver default for immedi << 
320                                                << 
321 April 8, 2019 H.Burkhardt                      << 
322 -------------------------                      << 
323 - Correcting transformation to local system in << 
324                                                << 
325 March 20, 2019 G.Cosmo                         << 
326 ----------------------                         << 
327 - Corrected 'RegularStepperName' in G4ChordFin << 
328   default stepper G4DormandPrince745 rather th << 
329                                                << 
330 November 9, 2018 J.Apostolakis                 << 
331 ------------------------------                 << 
332 - Small fixes for warnings in compilation.     << 
333 - Revisions of descriptions of recent tags (fo << 
334                                                << 
335 September 26, 2018 D.Sorokin                   << 
336 ----------------------------                   << 
337 - Implemented G4InterpolationDriver. This driv << 
338   stepper with interpolation property to integ << 
339   The field evaluations used to calculate the  << 
340   be reused to obtain one or multiple internal << 
341   So in steps in which an intersection is foun << 
342   evaluations are expected to be reduced subst << 
343                                                << 
344 September 13, 2018 D.Sorokin                   << 
345 ----------------------------                   << 
346 - G4NystromRK4 creates G4CachedMagneticField i << 
347 - Removed G4MagIntegratorStepper::ComputeRight << 
348   (all calls now use non-virtual RightHandSide << 
349 - Reversed declaration of final for the class  << 
350   Returned to previous status: only GetFieldVa << 
351   ( This avoid need to change examples/tests a << 
352     users' code. )                             << 
353                                                << 
354 September 12, 2018 D.Sorokin                   << 
355 ----------------------------                   << 
356 - Created new experimental driver G4BFieldInte << 
357   magnetic fields.  In QuickAdvance it uses he << 
358   estimated 'helix' rotation angle is larger t << 
359 - G4NystromRK4 uses G4CachedMagneticField for  << 
360   NOTE: It now the user's responsibility to cr << 
361   ( The alternative is to create G4CachedMagne << 
362     But this would have several disadvantages: << 
363     * It would change the field in the user's  << 
364     * G4NystromRK4 is not able to check whethe << 
365       that changes the equation using SetEquat << 
366                                                << 
367 July 10, 2018 D. Sorokin              - field- << 
368 ------------------------ Tags by J. Apostolaki << 
369 - Corrections in calculation of chord distance << 
370   ( use 4th order interpolation from Shampine  << 
371 - Revised G4FieldUtils: moved copy() method fr << 
372   added 2 new setValue: simple & variadic meth << 
373 - Fixes to copy input time in ModifiedMidpoint << 
374   Bogacki-Shampine 4/5 and 2/3  (note: B-S 2/3 << 
375   Dormand Prince 4/5, 5/6 and 7/8,  and Tsitou << 
376 - Trial revision in G4BulirschStoer to reduce  << 
377   operations (J.A.)                            << 
378 - Fix for unitialised pIntStepper pointer in G << 
379   constructor.  Revision of data member variab << 
380                                                << 
381 June 15, 2018 G.Cosmo                   - fiel << 
382 ---------------------                          << 
383 - Fixed minor Coverity defects in G4BurlischSt << 
384   Code cleanup.                                << 
385                                                << 
386 June 13, 2018 G.Cosmo                   - fiel << 
387 ---------------------                          << 
388 - Leave override final only for clone() method << 
389   not in destructor...                         << 
390                                                    19 
391 June 12, 2018 G.Cosmo                   - fiel <<  20 Oct 13, 2017 G. Cosmo                   - field-V10-02-26
392 ---------------------                          << 
393 - Use G4Exception warnings instead of streamin << 
394 - Added override final for virtual methods in  << 
395 - Some code cleanup.                           << 
396                                                << 
397 Apr 30, 2018 J. Apostolakis             - fiel << 
398 ---------------------------                    << 
399 - G4VIntegrationDriver and derived classes     << 
400                                                << 
401   Added new virtual method in G4VIntegrationDr << 
402       void RenewStepperAndAdjust(G4MagIntegrat << 
403   which used to exist in G4MagInt_Driver.      << 
404   ( Its absence caused a problem in some exist << 
405                                                << 
406   This method must be defined in those derived << 
407   a Runge Kutta stepper ( i.e. some or any typ << 
408                                                << 
409 - G4IntegrationDriver, G4FSALIntegrationDriver << 
410   Defined default implementation (which throws << 
411   implementations in the templated classes G4I << 
412   G4FSALIntegrationDriver which check the type << 
413   change the stepper if it is appropriate.     << 
414                                                << 
415 Feb 13, 2018 J. Apostolakis             - fiel << 
416 ---------------------------                    << 
417 - Change in G4FieldManager::CreateChordFinder  << 
418   better with case that field argument is null << 
419                                                << 
420 Feb 13, 2018 D. Sorokin                 - fiel << 
421 -----------------------                 - fiel << 
422 - Introduced Bulirsch-Stoer method of integrat << 
423   to Runge-Kutta based on the mid-point method << 
424   Separate driver derived G4VIntegrationDriver << 
425   using specialisation of G4IntegrationDriver  << 
426   Note: this method does not have a RK 'Steppe << 
427                                                << 
428 Jan 31, 2018 J. Apostolakis                    << 
429 ---------------------------                    << 
430 - G4MagneticField no longer inherits from G4El << 
431   This was incorrect, and allowed a user to pr << 
432   field, but obtain the force only from the B- << 
433   the equation created in the G4ChordFinder co << 
434    => potential interface change.              << 
435                                                << 
436   Result: It is no longer possible to use the  << 
437      pure magnetic field for the case of a mix << 
438      This change is desired, and is a *protect << 
439      use led to incorrect results.             << 
440   Instead the full chain of classes for equati << 
441      steppers and driver must be used for the  << 
442                                                << 
443 Feb 9, 2017 G.Cosmo                     - fiel << 
444 -------------------                            << 
445 - Removed static data from G4FSALIntegrationDr << 
446   G4MagIntegratorDriver and moved to base clas << 
447   Fix required for allowing proper symbol expo << 
448                                                << 
449 Nov 17, 2017 J. Apostolakis             - fiel << 
450 ---------------------------                    << 
451 - G4ChordFinder: Reinstated old driver G4MagIn << 
452     with G4DormandPrince745 (5th order) in G4C << 
453     2nd constructor (with magnetic field.)     << 
454   ( Reverses change made in field-V10-03-27 )  << 
455                                                << 
456 Nov 16, 2017 J. Apostolakis             - fiel << 
457 ---------------------------                    << 
458 - Suppressed statistics printing in G4ChordFin << 
459    ( G4IntegrationDriver and G4FSALIntegration << 
460    protecting them by verbosity flags.         << 
461                                                << 
462 - Minor fix to initialise scalar data member i << 
463   G4RK547FEq1, G4RK547FEq2 and G4RK547FEq3.    << 
464   Fixes coverity issues 97886, 97888 and 97889 << 
465                                                << 
466                                                << 
467 Nov 14, 2017 J. Apostolakis             - fiel << 
468 ---------------------------                    << 
469 - Suppressed extra verbosity in G4ChordFinder. << 
470 - Fix in G4FSALDormandPrince745 for unitialise << 
471   Initialise ak8[], ak9[] in constructor. This << 
472   memory allocation, without deletion - i.e. a << 
473 - Initialise fLastStepLength and/or fAuxSteppe << 
474   in constructors of G4DormandPrince745 and G4 << 
475   Coverity issues: 67394 (G4FSALDormandPrince7 << 
476                    67391     (G4DormandPrince7 << 
477                                                << 
478 Nov 14, 2017 J. Apostolakis             - fiel << 
479 ---------------------------             - fiel << 
480 - G4ChordFinder: changes in default stepper &  << 
481   in which only a magnetic field is provided ( << 
482                                                << 
483   * Reinstated G4DormandPrince745 (5th order)  << 
484    (corrected -23, which missed to initialise  << 
485                                                << 
486   * New templated driver G4IntegrationDriver i << 
487     the simple constuctors of G4ChordFinder an << 
488     which only require a (pure) magnetic field << 
489                                                << 
490   Additional information and details:          << 
491   * New optional parameter to constructor of G << 
492     allow to create an FSAL stepper and corres << 
493     This aims to reuse some derivatives, thus  << 
494     of derivatives and thus field evaluations. << 
495                                                << 
496   * The templated 'driver' classes, available  << 
497     G4ChordFinder's 2nd constructor, are used  << 
498     class:                                     << 
499      - G4IntegrationDriver      for non-FSAL   << 
500      - G4FSALIntegrationDriver  for FSAL-capab << 
501     These make non-virtual calls to the steppe << 
502                                                << 
503 - First fix in G4FSALDormandPrince745 for memo << 
504   delete[] fInitialDyDx in destructor. Coverit << 
505                                                << 
506 ---------------------------------------------- << 
507 Multiple tags (below) were to better test step << 
508 Date   Tagger         Tag name        Stepper  << 
509 ============================================== << 
510 Nov 3, D. Sorokin     field-V10-03-25 G4FSALBo << 
511 Nov 3, J. Apostolakis field-V10-03-24 G4FSALDo << 
512 Nov 2, J. Apostolakis field-V10-03-23 G4Dorman << 
513 Nov 2, J. Apostolakis field-V10-03-22 G4RK547F << 
514 ---------------------------------------------- << 
515 Glossary of drivers:                           << 
516    the FSAL driver = using G4FSALIntegrationDr << 
517    the new  driver = using G4IntegrationDriver << 
518 ============================================== << 
519                                                << 
520 Nov  2, 2017 D. Sorokin                 - fiel << 
521 ---------------------------------------        << 
522 - Added new steppers G4RK547FEq{1,2,3} which i << 
523   Runge-Kutta 4,5 pairs with:                  << 
524      - FSAL property (return derivative at end << 
525      - stable equilibrium states ( improved ha << 
526          integration: better stability in choo << 
527   Each one can be used with all existing Runge << 
528      - G4FSALIntegrationDriver, using its FSAL << 
529      - G4IntegrationDriver    without its FSAL << 
530      - the original G4MagInt_Driver, also igno << 
531                                                << 
532 - Reinstated G4DormandPrince745  ( known widel << 
533   the default RK method in G4ChordFinder for p << 
534     ( Withdrew G4BogackiShampine45. )  J. Apos << 
535                                                << 
536 Nov  1, 2017 J. Apostolakis             - fiel << 
537 ---------------------------                    << 
538 - Made G4BogackiShampine45 the default RK meth << 
539    for pure magnetic fields.                   << 
540                                                << 
541 Oct 30, 2017 D. Sorokin/J.Apostolakis   - fiel << 
542 ---------------------------------------        << 
543 - add GetStepper method to G4VIntegrationDrive << 
544                                                << 
545 Oct 20, 2017 D. Sorokin                 - fiel << 
546 ---------------------------------------        << 
547 Introduced base class for any driver algorithm << 
548 New concrete classes added:                    << 
549 - G4IntegrationDriver: implementation of templ << 
550   for non-fsal explicit Runge-Kutta steppers   << 
551 - G4FSALIntegrationDriver: implementation of d << 
552   FSAL explicit Runge-Kutta steppers.          << 
553 Existing class G4MagInt_Drv remains, deriving  << 
554                                                << 
555 - Expanded testing in testProElectroMagField ( << 
556    ( J. Apostolakis)                           << 
557                                                << 
558 Oct 13, 2017 D. Sorokin                 - fiel << 
559 ---------------------------------------        << 
560 - add G4FieldUtils.hh, G4FieldUtils.icc, G4Fie << 
561   utilities to extract data from arrays in con << 
562   magneticfield integration.                   << 
563                                                << 
564 Oct 13, 2017 G. Cosmo                   - fiel << 
565 ---------------------------------------            21 ---------------------------------------
566 - G4NystromRK4: use consistenly G4 types for d     22 - G4NystromRK4: use consistenly G4 types for double and bool in G4NystromRK4.
567                                                    23 
568 Aug 31, 2017 J. Apostolakis             - fiel <<  24 Aug 31, 2017 J. Apostolakis
569 ---------------------------------------        << 
570 - Made G4DormandPrince457 the default Stepper  << 
571   G4ChordFinder - when a driver/stepper is not << 
572                                                << 
573 Aug 31, 2017 J. Apostolakis             - fiel << 
574 ---------------------------------------            25 ---------------------------------------
575 - G4NystromRK4: used caching of momentum magni     26 - G4NystromRK4: used caching of momentum magnitude ( & its inverse)
576   to reduce overhead of fix in field-V10-03-10     27   to reduce overhead of fix in field-V10-03-10.
577                                                    28 
578 Aug 25, 2017 J. Apostolakis             - fiel <<  29 Aug 24, 2017 D.Sorokin & J. Apostolakis
579 ---------------------------------------        << 
580 - G4MagInt_Driver: added GetEquationOfMotion m << 
581   code with future develoment.                 << 
582                                                << 
583 Aug 24, 2017 D.Sorokin & J. Apostolakis - fiel << 
584 ---------------------------------------            30 ---------------------------------------
585 - G4NystromRK4: correction in call to getField     31 - G4NystromRK4: correction in call to getField: needs p[4], not p[3]
586     ( Spotted by D. Sorokin )                      32     ( Spotted by D. Sorokin )
587   Also small cleanup of testing code into 2 sm     33   Also small cleanup of testing code into 2 small new methods.
588     ( J. Apostolakis )                             34     ( J. Apostolakis )
589                                                    35 
590 Aug 23, 2017 J.Apostolakis              - fiel <<  36 Aug 23, 2017 J.Apostolakis
591 --------------------------                         37 --------------------------
592 - G4NystromRK4 - Fix the caching of momentum,      38 - G4NystromRK4 - Fix the caching of momentum, field location & value.
593   Fixes issue reported by ALICE ( problem repo     39   Fixes issue reported by ALICE ( problem report #1996 ).
594   Thanks to Ruben Shahoyan for identifying and     40   Thanks to Ruben Shahoyan for identifying and reporting the issue!
595 - Temporarly made G4NystromRK4 the default Ste << 
596   constructor (to ensure adequate testing).    << 
597                                                << 
598 Jul 04, 2017 J.Apostolakis             - field << 
599 --------------------------                     << 
600 - G4DormandPrinceRK78: initialise fLastStepLen << 
601   members in constructor. Coverity issue: 6739 << 
602   Improved description and reference to origin << 
603 - G4MagIntegratorDriver: initialised fNoCalls  << 
604                                                << 
605 Jul 03, 2017 J.Apostolakis             - field << 
606 --------------------------                     << 
607 - G4FSALBogackiShampline45: initialise 'bi[][] << 
608   in method PrepareConstants() called by const << 
609     ( Similar to G4BogackiShampine => seek con << 
610   Small fix: initialise fAuxStepper to nullptr << 
611     ( Part of Coverity issue 67394 )           << 
612 - G4DormandPrinceRK56: fix for significant mem << 
613   space in SetupInterpolate_low(), apparently  << 
614   because it was initialised in each use, not  << 
615   Improved initialisation of ak10, 11, 12 (mov << 
616   and fixed small memory leak (added deletion  << 
617 - G4MagIntegratorStepper: initialise fNoRHSCal << 
618   ( fIntegrationOrder is not yet used widely - << 
619   Coverity issue 67392.                        << 
620 - G4VFSALIntegrationStepper: initialise counte << 
621 - G4BogackiShampine23: initialised fIsFSAL, fI << 
622   Suppressed obsolete virtual method isFSAL,   << 
623   Deleted duplicate virtual method 'isFSAL()'. << 
624   now exists in base class G4MagIntegratorStep << 
625   Made copy constructor and equal operator pri << 
626   Added explanatory comments in source file; c << 
627   (it calculates derivative @ endpoint. )      << 
628 - Several steppers ( G4DoLoMcPriRK34, G4FSALBo << 
629   G4DormandPrince745, G4BogackiShampine45 ): i << 
630   fAuxStepper data members in constructor.     << 
631   Coverity issues: 67393, 67394, 67391, 67390, << 
632                                                << 
633 Jul 03, 2017 J.Apostolakis             - field << 
634 --------------------------                     << 
635 - fix for memory leak in Stepper() in two step << 
636      G4FSALBogackiShampline45 ( Coverity issue << 
637      G4FSALDormandPrince745   ( Coverity issue << 
638 - G4BogackiShampline23: fix for memory leak in << 
639     ( Coverity issue 67355 )                   << 
640                                                << 
641 May 17, 2017 J.Apostolakis             - field << 
642 --------------------------                     << 
643 - G4FieldManager::SetDetectorField             << 
644   Fixed default of 'fail mode' parameter in    << 
645      to 0 (silent) - not 1 which was used for  << 
646   In case of existing G4ChordFinder, use 'max' << 
647                                                << 
648                                                << 
649 May 11, 2017 J.Apostolakis             - field << 
650 --------------------------                     << 
651 - Reintroduced changes of field-V10-01-05, 06  << 
652   issue recalled by ATLAS.                     << 
653 - New fixes/refinements (since field-V10-01-07 << 
654   o Extra check for missing equation. (Fix)    << 
655   o Renamed G4FieldManager::SetFieldChangesEne << 
656     InitialiseFieldChangesEnergy() to clarify  << 
657 - Original functionality change (copied from f << 
658   o G4FieldManager.cc : Revised behaviour of S << 
659     passes the Field to the Equation, as is th << 
660     The previous behaviour is possible, using  << 
661             Values: 0           = silent ;     << 
662                     1 (default) = warning;     << 
663                     2 or other  = fatal except << 
664                                                << 
665     This change is to ensure that user expecta << 
666     if the field is changed for an existing, w << 
667     be propagated to the equation of motion.   << 
668     Note: this causes potential conflict betwe << 
669           and the field, which will need to be << 
670     Old behaviour (just set our own pointer) i << 
671     ProposeDetectorField(G4Field *detectorFiel << 
672     Note: Error reporting behaviour of SetDete << 
673           complain by default if ChordFinder i << 
674           ( The default values of failMode = 0 << 
675     If a chord-finder exists, it will still wa << 
676     To obtain have noisy extra checks call Set << 
677     or by using the new method for an existing << 
678     ChangeDetectorField(G4Field *detectorField << 
679   OLD: Co-works and requires new tag in geomet << 
680                                                << 
681 Mar  22, 2017 G.Cosmo                   - fiel << 
682 ---------------------                          << 
683 - Revert change made in previous tag and add s << 
684   singleton pointer.                           << 
685                                                << 
686 Mar  17, 2017 G.Cosmo                   - fiel << 
687 ---------------------                          << 
688 - Define G4FieldManagerStore as normal singlet << 
689                                                    41 
690 Oct   7, 2016 J.Apostolakis             - fiel     42 Oct   7, 2016 J.Apostolakis             - field-V10-02-24, 25
691 ---------------------------                        43 ---------------------------
692 - Checked loops for termination for infinite l <<  44 - Checked loops for termination for infinite loops and annotated 
693    them with "Loop checking" comment               45    them with "Loop checking" comment
694                                                    46 
695 Oct   7, 2016 D.Sorokin                 - fiel     47 Oct   7, 2016 D.Sorokin                 - field-V10-02-23
696 -----------------------  Commit: J. Apostolaki     48 -----------------------  Commit: J. Apostolakis
697 - Protection for multiple inclusion of G4Class <<  49 - Protection for multiple inclusion of G4ClassicalRK4 
698    (thanks to Dmitrii Sorokin, GSoC 2016 stude     50    (thanks to Dmitrii Sorokin, GSoC 2016 student. )
699                                                    51 
700 Aug  16, 2016 J.Apostolakis             - fiel     52 Aug  16, 2016 J.Apostolakis             - field-V10-02-22
701 ---------------------------                        53 ---------------------------
702 - Added initialization of fAuxStepper in const <<  54 - Added initialization of fAuxStepper in constructor of 
703   G4DoLoMcPriRK34, G4DormandPrince745 & G4Dorm     55   G4DoLoMcPriRK34, G4DormandPrince745 & G4DormandPrinceRK56.
704                                                    56 
705 June 11, 2016 J.Apostolakis             - fiel     57 June 11, 2016 J.Apostolakis             - field-V10-02-21
706 ---------------------------                        58 ---------------------------
707 - Restored G4ClassicalRK4 as default stepper f     59 - Restored G4ClassicalRK4 as default stepper for B-field,
708   (due to performance issues reported in bench     60   (due to performance issues reported in benchmarking.)
709                                                <<  61     
710 June 10, 2016 G.Cosmo                   - fiel     62 June 10, 2016 G.Cosmo                   - field-V10-02-20
711 ---------------------                              63 ---------------------
712 - Fixed code indentation in G4HelixMixedSteppe     64 - Fixed code indentation in G4HelixMixedStepper;
713   fixes compilation warnings on gcc-6.1.           65   fixes compilation warnings on gcc-6.1.
714                                                    66 
715 June 1, 2016 J.Apostolakis              - fiel     67 June 1, 2016 J.Apostolakis              - field-V10-02-19, 18, 17
716 --------------------------                         68 --------------------------
717 - Fix in multiple steppers for the size of two     69 - Fix in multiple steppers for the size of two C-arrays which hold
718   intermediate values;  they must be at least      70   intermediate values;  they must be at least 8 and at least
719   'fNumberOfStateVariables' long.              <<  71   'fNumberOfStateVariables' long.  
720   Changed: G4CashKarp,                         <<  72   Changed: G4CashKarp, 
721            G4BogackiShampine 23 & 34               73            G4BogackiShampine 23 & 34
722            G4DormandPrince 745, RK56 & RK78        74            G4DormandPrince 745, RK56 & RK78
723      G4DoLoMcPriRK34                               75      G4DoLoMcPriRK34
724            G4FSALBogackiShampine45, G4FSALDorm     76            G4FSALBogackiShampine45, G4FSALDormandPrince745
725 - Made G4CashKarp the default stepper in G4Cho     77 - Made G4CashKarp the default stepper in G4ChordFinder.
726 - Deleted trial class G4NewChordFinder.            78 - Deleted trial class G4NewChordFinder.
727                                                    79 
728 June 1, 2016 J.Apostolakis              - fiel     80 June 1, 2016 J.Apostolakis              - field-V10-02-16
729 --------------------------                         81 --------------------------
730 - Deleted test code (RkTestRun) due to cmake i     82 - Deleted test code (RkTestRun) due to cmake issues
731                                                    83 
732 June 1, 2016 J.Apostolakis              - fiel     84 June 1, 2016 J.Apostolakis              - field-V10-02-15 (also -14)
733 --------------------------                         85 --------------------------
734 - Made G4ClassicalRK4 the default stepper agai     86 - Made G4ClassicalRK4 the default stepper again in G4ChordFinder
735 - Fixes in test code (RkTestRun) for new names     87 - Fixes in test code (RkTestRun) for new names of classes.
736                                                <<  88      
737 May 31, 2016 J.Apostolakis              - fiel     89 May 31, 2016 J.Apostolakis              - field-V10-02-13 (also -12)
738 --------------------------                         90 --------------------------
739 - New class G4NewChordFinder, that uses old G4     91 - New class G4NewChordFinder, that uses old G4MagIntegratorDriver or
740     the newer G4FSALIntegratorDriver -- first      92     the newer G4FSALIntegratorDriver -- first try, for testing FSAL.
741   Created new test testNewChordFinder.cc to ch     93   Created new test testNewChordFinder.cc to checks this.
742                                                    94 
743 - Renamed new Stepper classes to use 'G4' pref     95 - Renamed new Stepper classes to use 'G4' prefix, including
744     DormandPrince{745,RK56,RK67} TsitourasRK45     96     DormandPrince{745,RK56,RK67} TsitourasRK45 and DoLoMcPriRK34
745                                                    97 
746 - Renamed FSAL base classes to use 'G4' prefix     98 - Renamed FSAL base classes to use 'G4' prefix & 'Integrat-ion'
747      FSALMagIntegratorStepper to G4VFSALIntegr     99      FSALMagIntegratorStepper to G4VFSALIntegrationStepper
748      FSALIntegratorDriver     to  G4FSALIntegr    100      FSALIntegratorDriver     to  G4FSALIntegrationDriver
749   and the experimental FSAL versions of steppe    101   and the experimental FSAL versions of steppers,
750      FBogackiShampine45.hh  to  G4FSALBogackiS    102      FBogackiShampine45.hh  to  G4FSALBogackiShampine45.hh
751      FDormandPrince745.hh   to  G4FSALDormandP    103      FDormandPrince745.hh   to  G4FSALDormandPrince745.hh
752 ( Note: FSAL steppers remain 'behind' the impr    104 ( Note: FSAL steppers remain 'behind' the improved non-FSAL versions.)
753                                                   105 
754 - Made DormandPrince745 (DP45) the default ste    106 - Made DormandPrince745 (DP45) the default stepper (in G4ChordFinder).
755                                                << 107     
756 May 26, 2016 J.Apostolakis & Som. Banerjee   -    108 May 26, 2016 J.Apostolakis & Som. Banerjee   - field-V10-02-11
757 ------------------------------------------        109 ------------------------------------------
758 - First version of FSAL classes (as additional    110 - First version of FSAL classes (as additional classes)
759     FSAL Integrator Driver  : New *concrete*,  << 111     FSAL Integrator Driver  : New *concrete*, stand-alone driver 
760     FSAL Integrator Stepper : New base class (    112     FSAL Integrator Stepper : New base class (separate from G4MagIntegratorStepper)
761     FBogackiShampine45:  FSAL-version of Bogac    113     FBogackiShampine45:  FSAL-version of BogackiShampine45 stepper
762     FDormandPrince745:   FSAL-version of FDorm    114     FDormandPrince745:   FSAL-version of FDormandPrince745 stepper
763   Developed by Somnath Banerjee in GSoC 2015      115   Developed by Somnath Banerjee in GSoC 2015
764                                                   116 
765 Context:                                          117 Context:
766 * FSAL Stepper's key 'Stepper()' method for St    118 * FSAL Stepper's key 'Stepper()' method for Stepping has additional
767     argument to return the derivative at the e    119     argument to return the derivative at the end of a step.
768     If the step was successful, this estimate     120     If the step was successful, this estimate has the same order of
769     accuracy as the stepper (i.e. 5th order fo    121     accuracy as the stepper (i.e. 5th order for a 5th order stepper.)
770                                                   122 
771 - FSAL Driver method uses the revised Stepper     123 - FSAL Driver method uses the revised Stepper interface, using
772     the final (endpoint) derivative for succes    124     the final (endpoint) derivative for successful steps
773     as the start derivative for the next step,    125     as the start derivative for the next step, in case of
774     continuing of integration.                    126     continuing of integration.
775                                                   127 
776 - New test (RkTestRun.cc) covering FSAL method    128 - New test (RkTestRun.cc) covering FSAL methods, integration
777    Developed by Somnath Banerjee in GSoC 2015     129    Developed by Somnath Banerjee in GSoC 2015
778                                                   130 
779 May 26, 2016 J.Apostolakis                   -    131 May 26, 2016 J.Apostolakis                   - field-V10-02-10
780 --------------------------                        132 --------------------------
781 Preparation for addition of FSAL steppers (& d    133 Preparation for addition of FSAL steppers (& driver)
782 - G4MagIntegratorStepper: Added counter for ca << 134 - G4MagIntegratorStepper: Added counter for calls to equation RHS, 
783     with Get/Reset methods.                       135     with Get/Reset methods.
784 - Cosmetic fixes in sources.cmake (tabs to spa    136 - Cosmetic fixes in sources.cmake (tabs to spaces)
785                                                   137 
786 May 25, 2016 J.Apostolakis & Som. Banerjee   -    138 May 25, 2016 J.Apostolakis & Som. Banerjee   - field-V10-02-09
787 ------------------------------------------        139 ------------------------------------------
788 - Added new stepper classes embedded RK method    140 - Added new stepper classes embedded RK method:
789   * DoLoMcPriRK34,      6-stage 3/4 RK (interp    141   * DoLoMcPriRK34,      6-stage 3/4 RK (interpolation)
790   * DormandPrinceRK56,  9-stage 5/6 RK (interp    142   * DormandPrinceRK56,  9-stage 5/6 RK (interpolation, FSAL-able) "6(5)"
791   * DormandPrinceRK78, 13-stage 7/8 RK (interp    143   * DormandPrinceRK78, 13-stage 7/8 RK (interpolation)        "8(7) 13M"
792   created by Somnath Banerjee as part of GSoC     144   created by Somnath Banerjee as part of GSoC 2015.
793                                                   145 
794 May 25, 2016 J.Apostolakis             - field    146 May 25, 2016 J.Apostolakis             - field-V10-02-08
795 --------------------------                        147 --------------------------
796 - Revised testPropagateMagField, to reduce err    148 - Revised testPropagateMagField, to reduce error severity for over-long
797     steps.  An error message is still written     149     steps.  An error message is still written if move > (1.+1.0e-9) * step,
798     but test does not stop.                       150     but test does not stop.
799                                                   151 
800 - G4HelixMixedStepper: Fixes & added new (5th     152 - G4HelixMixedStepper: Fixes & added new (5th order) stepper choices.
801     Included (G4)Bogacki-Shampine 23/45 ,  Dor    153     Included (G4)Bogacki-Shampine 23/45 ,  DormandPrince745,
802     and newest TsitourasRK45.                     154     and newest TsitourasRK45.
803                                                   155 
804 May 24, 2016 J.Apostolakis             - field    156 May 24, 2016 J.Apostolakis             - field-V10-02-06, 07
805 --------------------------                        157 --------------------------
806 - Added TsitourasRK45 stepper.                    158 - Added TsitourasRK45 stepper.
807 - Made Cash-Karp the default stepper (in G4Cho    159 - Made Cash-Karp the default stepper (in G4ChordFinder).
808                                                << 160     
809 May 23, 2016 J.Apostolakis             - field    161 May 23, 2016 J.Apostolakis             - field-V10-02-05
810 --------------------------                        162 --------------------------
811 - Made DormandPrince745 (DP45) the default ste    163 - Made DormandPrince745 (DP45) the default stepper (in G4ChordFinder).
812                                                << 164     
813 May 20, 2016 J.Apostolakis             - field    165 May 20, 2016 J.Apostolakis             - field-V10-02-04
814 -------------------------                         166 -------------------------
815 - Added steppers created by Somnath Banerjee a    167 - Added steppers created by Somnath Banerjee as part of GSoC 2015,
816     G4BogackiShampine23 (BS23 below), G4Bogack    168     G4BogackiShampine23 (BS23 below), G4BogackiShampine45 (BS45) and
817     DormandPrince745 (DP45).                      169     DormandPrince745 (DP45).
818   These implement third order (BS23) and fifth    170   These implement third order (BS23) and fifth order (BS45, DP45)
819     embedded RK tableaus.                         171     embedded RK tableaus.
820 - DP45 includes interpolation method, to evalu    172 - DP45 includes interpolation method, to evaluate the interpolant
821     ('y') at intermediate points of a successf    173     ('y') at intermediate points of a successful step.
822   BS45's interpolation method exists, but is n    174   BS45's interpolation method exists, but is not validated (fails).
823                                                   175 
824  References:                                      176  References:
825   - BS45 is embedded pair from paper by P. Bog    177   - BS45 is embedded pair from paper by P. Bogacki and L. F. Shampine:
826       “An efficient Runge-Kutta (4,5) pair,    178       “An efficient Runge-Kutta (4,5) pair,”
827       Comput. Math. with Appl., vol. 32, no. 6    179       Comput. Math. with Appl., vol. 32, no. 6, pp. 15–28, Sep. 1996.
828   - BS23 is four stage RK method from the pape    180   - BS23 is four stage RK method from the paper of P. Bogacki and L. F. Shampine,
829       “A 3(2) pair of Runge - Kutta formulas << 181       “A 3(2) pair of Runge - Kutta formulas,” 
830       Appl. Math. Lett., vol 2, no 4, p.321 (1    182       Appl. Math. Lett., vol 2, no 4, p.321 (1989).
831   - DP45 are from Table 2 of  J. R. Dormand an << 183   - DP45 are from Table 2 of  J. R. Dormand and P. J. Prince's 
832       “A family of embedded Runge-Kutta form    184       “A family of embedded Runge-Kutta formulae,”
833       Journal of comput. and applied Math., vo << 185       Journal of comput. and applied Math., vol. 6, no. 1, pp. 19–26, 1980.    
834                                                   186 
835 May 4, 2016 G.Cosmo                   - field-    187 May 4, 2016 G.Cosmo                   - field-V10-02-03
836 -------------------                               188 -------------------
837 - Fixed Clone() signatures in derived Field cl    189 - Fixed Clone() signatures in derived Field classes.
838   More corrections on implementations of opera    190   More corrections on implementations of operator=() and copy-ctors.
839                                                   191 
840 Apr 29, 2016 G.Cosmo                  - field-    192 Apr 29, 2016 G.Cosmo                  - field-V10-02-02
841 --------------------                              193 --------------------
842 - Corrected implementation of operator=() and     194 - Corrected implementation of operator=() and copy-ctor for G4Field,
843   G4ElectroMagneticField, G4ElectricField and     195   G4ElectroMagneticField, G4ElectricField and G4CachedMagneticField.
844                                                   196 
845 Feb 25, 2016 P.Gumplinger             - field-    197 Feb 25, 2016 P.Gumplinger             - field-V10-02-01
846 -------------------------                         198 -------------------------
847 - address Problem Report: 1831                    199 - address Problem Report: 1831
848   change: G4Mag_SpinEqRhs, G4EqEMFieldWithSpin    200   change: G4Mag_SpinEqRhs, G4EqEMFieldWithSpin, G4EqEMFieldWithEDM and
849           G4RepleteEofM.cc from g_BMT = (magMo    201           G4RepleteEofM.cc from g_BMT = (magMoment/muB)/spin
850                            to   g_BMT = (std::    202                            to   g_BMT = (std::abs(magMoment)/muB)/spin
851                                                   203 
852                                                   204 
853 Dec 11, 2015 A.Dotti          - field-V10-02-0    205 Dec 11, 2015 A.Dotti          - field-V10-02-00
854 --------------------------                        206 --------------------------
855 Fixing typo in tests/CMakeList.txt file: subdi << 207 Fixing typo in tests/CMakeList.txt file: subdirecotry() 
856 instead of add_subdirectory()                     208 instead of add_subdirectory()
857                                                   209 
858 Nov  2, 2015 J.Apostolakis             - field    210 Nov  2, 2015 J.Apostolakis             - field-V10-01-15 (fixed)
859 Oct 22, 2015 J.Apostolakis             - field    211 Oct 22, 2015 J.Apostolakis             - field-V10-01-14
860 --------------------------                        212 --------------------------
861 - Reverted changes in G4FieldManager from  tag    213 - Reverted changes in G4FieldManager from  tags field-V10-01-05 to -07
862    inadvertently reintroduced in tag field-V10    214    inadvertently reintroduced in tag field-V10-01-13
863     (fixed in tag -15: committed new copy from    215     (fixed in tag -15: committed new copy from tag -04 'on top')
864                                                << 216     
865 - Added explanation comment in G4MagHelicalSte    217 - Added explanation comment in G4MagHelicalSteper.
866                                                << 218     
867 Oct 13, 2015 J.Apostolakis             - field    219 Oct 13, 2015 J.Apostolakis             - field-V10-01-13
868 --------------------------                        220 --------------------------
869 - G4ChordFinder::FindNextChord: Added check ag << 221 - G4ChordFinder::FindNextChord: Added check against number of iterations, 
870   to identify potential issue of lack of conve    222   to identify potential issue of lack of convergence.
871 - test: fixed testProElectricMagField.cc          223 - test: fixed testProElectricMagField.cc
872                                                   224 
873 - Note: tag-13 inadvertently reintroduced chan    225 - Note: tag-13 inadvertently reintroduced changes from tags field-V10-01-05 to -07
874                                                   226 
875 Jun 26, 2015 P.Gumplinger              - field    227 Jun 26, 2015 P.Gumplinger              - field-V10-01-12, 11
876 -------------------------                         228 -------------------------
877 - Include 'NumberOfVariables' in G4RepleteEofM    229 - Include 'NumberOfVariables' in G4RepleteEofM constructor argument list.
878                                                   230 
879 Jun 22, 2015 G.Cosmo                   - field    231 Jun 22, 2015 G.Cosmo                   - field-V10-01-10
880 --------------------                              232 --------------------
881 - Withdrawn also changes introduced in tag "fi    233 - Withdrawn also changes introduced in tag "field-V10-01-08", as
882   responsible for memory violation errors in V    234   responsible for memory violation errors in Valgrind.
883   Now corresponding to tag "field-V10-01-04".     235   Now corresponding to tag "field-V10-01-04".
884                                                   236 
885 Jun 18, 2015 G.Cosmo                   - field    237 Jun 18, 2015 G.Cosmo                   - field-V10-01-09
886 --------------------                              238 --------------------
887 - Withdrawn changes introduced from tag "field    239 - Withdrawn changes introduced from tag "field-V10-01-05" to tag
888   "field-V10-01-07" included, responsible for     240   "field-V10-01-07" included, responsible for failures on SLC6 and
889   run-time errors on Valgrind checks.             241   run-time errors on Valgrind checks.
890                                                   242 
891 Jun 10, 2015 P.Gumplinger              - field    243 Jun 10, 2015 P.Gumplinger              - field-V10-01-08
892 -------------------------                         244 -------------------------
893 - initialize all elements of dydx[] in G4Reple    245 - initialize all elements of dydx[] in G4RepleteEofM::EvaluateRhsGivenB
894   Thanks to Tatsuya Kikawa (Osaka Univ.)          246   Thanks to Tatsuya Kikawa (Osaka Univ.)
895                                                   247 
896 Jun 10, 2015 J.Apostolakis             - field    248 Jun 10, 2015 J.Apostolakis             - field-V10-01-07
897 --------------------------                        249 --------------------------
898 - G4FieldManager.cc : Made behaviour of SetDet    250 - G4FieldManager.cc : Made behaviour of SetDetector 'softer'.  No
899    longer complains by default if ChordFinder     251    longer complains by default if ChordFinder is not (yet) set.
900     ( The default values of failMode = 0 i.e.     252     ( The default values of failMode = 0 i.e. quiet. )
901    If a chord-finder exists, it will still war    253    If a chord-finder exists, it will still warn for other errors.
902                                                << 254    
903    It is still possible to have louder/extra c    255    It is still possible to have louder/extra checks done calling
904      SetDetectorField with failMode > 0           256      SetDetectorField with failMode > 0
905    or by using a new method, which expects an     257    or by using a new method, which expects an existing field:
906      ChangeDetectorField(G4Field *detectorFiel << 258      ChangeDetectorField(G4Field *detectorField)    
907                                                   259 
908 Jun  8, 2015 J.Apostolakis             - field    260 Jun  8, 2015 J.Apostolakis             - field-V10-01-05, (-06 fixed)
909 --------------------------                        261 --------------------------
910 - G4FieldManager.cc : Revised behaviour of Set    262 - G4FieldManager.cc : Revised behaviour of SetDetector - it now
911    passes the Field to the Equation, as is the    263    passes the Field to the Equation, as is the natural user expectation
912    The previous behaviour is possible, using e << 264    The previous behaviour is possible, using extra argument 'failMode' 
913       flag. Values: 0           = silent ;     << 265       flag. Values: 0           = silent ; 
914                     1 (default) = warning;     << 266                     1 (default) = warning; 
915                     2 or other  = fatal except    267                     2 or other  = fatal exception.
916    Or can use alternative (new) suggestion met    268    Or can use alternative (new) suggestion method ProposeDetectorField();
917                                                   269 
918    This change is to ensure that user expectat << 270    This change is to ensure that user expectation is met: 
919       if the field is changed for an existing, << 271       if the field is changed for an existing, working stepper it must 
920       be propagated to the equation of motion.    272       be propagated to the equation of motion.
921    Note: this causes potential conflict betwee    273    Note: this causes potential conflict between the type of the equation
922          and the field, which will need to be     274          and the field, which will need to be solved in the future.
923                                                   275 
924    Old behaviour (just set our own pointer) is    276    Old behaviour (just set our own pointer) is still available in new method:
925      ProposeDetectorField(G4Field *detectorFie << 277      ProposeDetectorField(G4Field *detectorField) 
926                                                   278 
927    Co-works and requires new tag in geometry/n    279    Co-works and requires new tag in geometry/navigation: geomnav-V10-01-24.
928                                                   280 
929 Jun 4, 2015 P. Gumplinger              - field    281 Jun 4, 2015 P. Gumplinger              - field-V10-01-04
930 -------------------------                         282 -------------------------
931 - change assignment to field instead of Field     283 - change assignment to field instead of Field array in G4RepleteEofM.cc
932                                                   284 
933 Jan 28, 2015 J.Apostolakis             - field    285 Jan 28, 2015 J.Apostolakis             - field-V10-01-01 (-02,03 fixed)
934 --------------------------                        286 --------------------------                               ( History    )
935 - Revert unintended inclusion of changes in G4    287 - Revert unintended inclusion of changes in G4MagIntegratorDriver
936                                                   288 
937 Jan 15, 2015 J.Apostolakis             - field << 289 Jan 15, 2015 J.Apostolakis             - field-V10-01-00 
938 --------------------------                        290 --------------------------
939 - Small refinements in G4FieldTrack - access r    291 - Small refinements in G4FieldTrack - access rest mass, avoid div by 0
940     Avoid division by zero for Unit direction  << 292     Avoid division by zero for Unit direction in FieldTrack 
941     Added method to get Rest Mass.                293     Added method to get Rest Mass.
942   Needed for fixes related to Problem report 1    294   Needed for fixes related to Problem report 1696.
943   Thanks to Nathan S. Froemming <nfroemm@uw.ed    295   Thanks to Nathan S. Froemming <nfroemm@uw.edu> who reported the issue
944    and created dedicated test to demonstrate i    296    and created dedicated test to demonstrate it.
945                                                   297 
946 Nov 03, 2014 G.Cosmo                   - field    298 Nov 03, 2014 G.Cosmo                   - field-V10-00-04
947 --------------------                              299 --------------------
948 - Moved constructors and simple methods to in     300 - Moved constructors and simple methods to in line in G4ChargeState and
949   G4LineSection for CPU speedup (courtesy of S    301   G4LineSection for CPU speedup (courtesy of S.Wenzel).
950                                                   302 
951 May 21, 2014 J.Apostolakis             - field    303 May 21, 2014 J.Apostolakis             - field-V10-00-03
952 --------------------------                        304 --------------------------
953 - G4FieldTrack:                                   305 - G4FieldTrack:
954   * Fixed SetChargeAndMoments() to use the new    306   * Fixed SetChargeAndMoments() to use the new method
955     G4ChargeState::SetChargesAndMoments(); it     307     G4ChargeState::SetChargesAndMoments(); it was changing spin, because of
956     erroneous change in G4ChargeState::SetChar    308     erroneous change in G4ChargeState::SetChargesAndMoments(), that method
957     is now renamed SetChargeSpinMoments() to s    309     is now renamed SetChargeSpinMoments() to show what it does;
958   * Added pdg-spin as argument to constructors    310   * Added pdg-spin as argument to constructors (needed to track polarization);
959   * Renamed 'spin' to 'Polarization' in method    311   * Renamed 'spin' to 'Polarization' in method, arguments, data member to
960     avoid confusion;                              312     avoid confusion;
961   * Revised constructors to add pdg-spin as la    313   * Revised constructors to add pdg-spin as last argument (with default -1).
962 - G4ChargeState:                                  314 - G4ChargeState:
963   - Addressed Coverity issue #56281 'Arguments << 315   - Addressed Coverity issue #56281 'Arguments in wrong order'  
964     G4ChargeState::SetChargeMoments() when use    316     G4ChargeState::SetChargeMoments() when used in
965     G4FieldTrack::SetChargeMoments() from addi    317     G4FieldTrack::SetChargeMoments() from addition of spin to arguments,
966     without revising name of method to reflect    318     without revising name of method to reflect it;
967   - Changed order of arguments in constructor,    319   - Changed order of arguments in constructor, making spin 3rd argument
968     (was 2nd) and making all arguments mandato    320     (was 2nd) and making all arguments mandatory;
969   - Renamed SetChargeAndMoments() method with     321   - Renamed SetChargeAndMoments() method with 5 arguments including spin (2nd)
970     to SetChargeSpinMoments();                    322     to SetChargeSpinMoments();
971   - Added new methods including SetChargesAndM    323   - Added new methods including SetChargesAndMoments(), SetChargeMdm(),
972     SetChargeDipoleMoments() (no spin), and al    324     SetChargeDipoleMoments() (no spin), and also SetChargeSpin(),
973     SetChargeMdmSpin() (which includes spin) t << 325     SetChargeMdmSpin() (which includes spin) to provide most/all potential 
974     combinations.                                 326     combinations.
975 - G4MagIntegratorDriver::OneGoodStep():           327 - G4MagIntegratorDriver::OneGoodStep():
976   * Trial changes to address Valgrind issue, a    328   * Trial changes to address Valgrind issue, about value used before being set.
977                                                   329 
978 Apr 01, 2014 J.Apostolakis                - fi    330 Apr 01, 2014 J.Apostolakis                - field-V10-00-02
979 --------------------------                        331 --------------------------
980 - Moved G4FieldTrack::LoadFromArray() to .cc a    332 - Moved G4FieldTrack::LoadFromArray() to .cc and removed non-necessary
981   thread-local static data local to the functi    333   thread-local static data local to the function.
982                                                   334 
983 Mar 14, 2014 J.Apostolakis                - fi    335 Mar 14, 2014 J.Apostolakis                - field-V10-00-01
984 --------------------------                        336 --------------------------
985 - Fix assignment operator for G4FieldTrack. (C    337 - Fix assignment operator for G4FieldTrack. (Copied Rest Mass)
986 - Improve printing of G4FieldTrack                338 - Improve printing of G4FieldTrack
987                                                   339 
988 Jan 17, 2014 P.Gumplinger                 - fi    340 Jan 17, 2014 P.Gumplinger                 - field-V10-00-00
989 -------------------------                         341 -------------------------
990 - add G4Mag_EqRhs::SetChargeMomentumMass( part    342 - add G4Mag_EqRhs::SetChargeMomentumMass( particleCharge, MomentumXc, mass)
991   to G4Mag_SpinEqRhs::SetChargeMomentumMass, s    343   to G4Mag_SpinEqRhs::SetChargeMomentumMass, see bug reported at:
992   http://hypernews.slac.stanford.edu/HyperNews    344   http://hypernews.slac.stanford.edu/HyperNews/geant4/get/emfields/210.html
993                                                   345 
994 Nov 18, 2013 P.Gumplinger                 - fi    346 Nov 18, 2013 P.Gumplinger                 - field-V09-06-13/12
995 -------------------------                         347 -------------------------
996 - fix Coverity warning in G4RepleteEofM           348 - fix Coverity warning in G4RepleteEofM
997                                                   349 
998 Nov 17, 2013 J.Apostolakis                     << 350 Nov 17, 2013 J.Apostolakis                
999 --------------------------                        351 --------------------------
1000 - Fixed and improved HelixMixed Stepper:         352 - Fixed and improved HelixMixed Stepper:
1001     Corrected the default stepper for small s    353     Corrected the default stepper for small steps to be ClassicalRK4.
1002     Added Angle-threshold parameter. (Default    354     Added Angle-threshold parameter. (Default remains 0.33 radians.)
1003     Added more Steppers, including G4NystromR    355     Added more Steppers, including G4NystromRK4.
1004     Revised Id numbers of Steppers, to make t    356     Revised Id numbers of Steppers, to make the best more visible.
1005     More comments in Stepper().                  357     More comments in Stepper().
1006                                                  358 
1007 Nov 05, 2013 P.Gumplinger                 - f    359 Nov 05, 2013 P.Gumplinger                 - field-V09-06-11
1008 -------------------------                        360 -------------------------
1009 - remove writing out-of-bounds dydx[8] = 0. i    361 - remove writing out-of-bounds dydx[8] = 0. in G4RepleteEofM.cc
1010                                                  362 
1011 Nov 04, 2013 P.Gumplinger                 - f    363 Nov 04, 2013 P.Gumplinger                 - field-V09-06-10
1012 -------------------------                        364 -------------------------
1013 - add G4RepleteEofM to sources.cmake             365 - add G4RepleteEofM to sources.cmake
1014                                             f    366                                             field-V09-06-09 - same as
1015 Nov 01st, 2013 P.Gumplinger               - f    367 Nov 01st, 2013 P.Gumplinger               - field-V09-06-08
1016 ---------------------------                      368 ---------------------------
1017 - add G4RepleteEofM: EofM that includes force    369 - add G4RepleteEofM: EofM that includes force due to B, E, and gravity field
1018   as well as mu*grad(B) and spin tracking.       370   as well as mu*grad(B) and spin tracking.
1019                                                  371 
1020 May 10th, 2013 P.Gumplinger/J.Apostolakis - f    372 May 10th, 2013 P.Gumplinger/J.Apostolakis - field-V09-06-07
1021 -----------------------------------------        373 -----------------------------------------
1022 - Revised number of field components (to allo    374 - Revised number of field components (to allow up to 24).
1023    18 are required for new applications (B, E    375    18 are required for new applications (B, E, Gravity, B-gradients)
1024 - Fixes for initialisation errors found by Co    376 - Fixes for initialisation errors found by Coverity.
1025                                                  377 
1026 May 10th, 2013 P.Gumplinger - field-V09-06-06    378 May 10th, 2013 P.Gumplinger - field-V09-06-06
1027 ---------------------------                      379 ---------------------------
1028 - prevent divided by zero and shortcut spin t    380 - prevent divided by zero and shortcut spin tracking for spin == 0
1029   particles: G4Mag_SpinEqRhs.cc, G4EqEMFieldW    381   particles: G4Mag_SpinEqRhs.cc, G4EqEMFieldWithSpin.cc and
1030   G4EqEMFieldWithEDM.cc                          382   G4EqEMFieldWithEDM.cc
1031                                             f << 383                                             field-V09-06-05 - same 
1032 May 8th,  2013 P.Gumplinger/J.Apostolakis - f    384 May 8th,  2013 P.Gumplinger/J.Apostolakis - field-V09-06-04
1033 -----------------------------------------        385 -----------------------------------------
1034 - Introduced new class G4ChargeState to hold     386 - Introduced new class G4ChargeState to hold charge, spin, magnetic moment
1035      (promoted from internal class of G4Field    387      (promoted from internal class of G4FieldTrack).
1036 - Changed the signature of EquationOfMotion::    388 - Changed the signature of EquationOfMotion::SetChargeMomentumMass to
1037  take G4ChargeState in place of G4double (cha    389  take G4ChargeState in place of G4double (charge) as first argument.
1038 - Deleted SetChargeMomentumMass from G4ChordF    390 - Deleted SetChargeMomentumMass from G4ChordFinder, G4PropagatorInField,
1039    G4MagInt_Driver                               391    G4MagInt_Driver
1040                                                  392 
1041 - Migrated testPropagateMagField and testProp    393 - Migrated testPropagateMagField and testPropagateSpin.
1042                                                  394 
1043 March 19th, 2013 G.Cosmo - field-V09-06-03, f    395 March 19th, 2013 G.Cosmo - field-V09-06-03, field-V09-06-02
1044 -------------------------                        396 -------------------------
1045 - Cleanup of MT changes in G4FieldManagerStor    397 - Cleanup of MT changes in G4FieldManagerStore.
1046                                                  398 
1047 February 26th, 2013 A.Dotti - field-V09-06-01    399 February 26th, 2013 A.Dotti - field-V09-06-01
1048 ---------------------------                      400 ---------------------------
1049 - First implementation of Cloning mechanism (    401 - First implementation of Cloning mechanism (needed for MT)
1050                                                  402 
1051 February 22nd, 2013 G.Cosmo - field-V09-06-00    403 February 22nd, 2013 G.Cosmo - field-V09-06-00
1052 ---------------------------                      404 ---------------------------
1053 - Cleanup of unnecessary changes for multi-th    405 - Cleanup of unnecessary changes for multi-threading in G4QuadrupoleMagField.
1054 - Removed unused private data-members in G4Ma    406 - Removed unused private data-members in G4Mag_UsualEqRhs and G4RKG3_Stepper.
1055                                                  407 
1056 November 14th, 2012 P.Mato - field-V09-05-07     408 November 14th, 2012 P.Mato - field-V09-05-07
1057 --------------------------                       409 --------------------------
1058 - G4QuadrupoleMagField: allow displaced origi    410 - G4QuadrupoleMagField: allow displaced origin and rotation (Björn Riese)
1059 - Added G4SystemOfUnits.hh in unit tests         411 - Added G4SystemOfUnits.hh in unit tests
1060                                                  412 
1061 August 30th, 2012 P.Mato - field-V09-05-06       413 August 30th, 2012 P.Mato - field-V09-05-06
1062 ------------------------                         414 ------------------------
1063 - Adapted CMakeLists.txt files to new unit te    415 - Adapted CMakeLists.txt files to new unit tests
1064                                                  416 
1065 June 11th, 2012 G.Cosmo - field-V09-05-05        417 June 11th, 2012 G.Cosmo - field-V09-05-05
1066 -----------------------                          418 -----------------------
1067 - Explicitly use inclusion of headers for sys    419 - Explicitly use inclusion of headers for system of units and physical
1068   constants, in plan to remove implicit inclu    420   constants, in plan to remove implicit inclusion from globals.hh.
1069                                                  421 
1070 May 14th, 2012 G.Cosmo - field-V09-05-04         422 May 14th, 2012 G.Cosmo - field-V09-05-04
1071 ----------------------                           423 ----------------------
1072 - Fixed spurious case of hidden variable visi    424 - Fixed spurious case of hidden variable visibility in G4NystromRK4,
1073   detected with '-Wshadow' compilation option    425   detected with '-Wshadow' compilation option on gcc compiler.
1074                                                  426 
1075 February 3rd,  2012 J.Apostolakis - field-V09    427 February 3rd,  2012 J.Apostolakis - field-V09-05-03
1076 ---------------------------------                428 ---------------------------------
1077 - G4FieldTrack:                               << 429 - G4FieldTrack: 
1078     Added new (inline) method to set the Rest << 430     Added new (inline) method to set the Rest Mass. Needed in order to 
1079        reset this - and keep reuse the same G    431        reset this - and keep reuse the same G4FieldTrack in a client
1080        (across tracks.)                          432        (across tracks.)
1081     Made SetCurvePnt() method private.           433     Made SetCurvePnt() method private.
1082     Simplified implementation of constructors << 434     Simplified implementation of constructors.  Gain of 1 square root and 
1083        1 division per call.                      435        1 division per call.
1084                                                  436 
1085 February  3rd,  2012 G.Cosmo - field-V09-05-0    437 February  3rd,  2012 G.Cosmo - field-V09-05-02
1086 ----------------------------                     438 ----------------------------
1087 - Removed tests in CMakeLists.txt causing cat    439 - Removed tests in CMakeLists.txt causing catastrophic failure in system
1088   testing!                                       440   testing!
1089                                                  441 
1090 February  2nd,  2012 J.Apostolakis - field-V0    442 February  2nd,  2012 J.Apostolakis - field-V09-05-01
1091 ----------------------------------               443 ----------------------------------
1092 - G4Mag_UsualEqRhs: in SetChargeMomentumMass(    444 - G4Mag_UsualEqRhs: in SetChargeMomentumMass() method, fixed problem with
1093   division by zero; stopped updating 'fInvCur    445   division by zero; stopped updating 'fInvCurrentMomentumXc' (data member
1094   is obsolete).                                  446   is obsolete).
1095 - Added tests in CMakeLists.txt                  447 - Added tests in CMakeLists.txt
1096                                                  448 
1097 December 13th,  2011 G.Cosmo - field-V09-05-0    449 December 13th,  2011 G.Cosmo - field-V09-05-00
1098 ----------------------------                     450 ----------------------------
1099 - Fixed Coverity defects in G4SimpleRunge (re    451 - Fixed Coverity defects in G4SimpleRunge (removed spurious pointer
1100   data member) and G4FieldTrack (missing G4Ch    452   data member) and G4FieldTrack (missing G4ChargeState::operator=()).
1101 - Synchronised unit tests to trunk (new test     453 - Synchronised unit tests to trunk (new test field07 and minor updates).
1102                                                  454 
1103 November 11th,  2011 J.Apostolakis - field-V0    455 November 11th,  2011 J.Apostolakis - field-V09-04-06
1104 ----------------------------------               456 ----------------------------------
1105 - Added G4Field.cc to list of files in source    457 - Added G4Field.cc to list of files in sources.cmake
1106                                                  458 
1107 November  4th,  2011 J.Apostolakis - field-V0    459 November  4th,  2011 J.Apostolakis - field-V09-04-05
1108 ----------------------------------               460 ----------------------------------
1109 - G4Field: revised to improve ability to dete    461 - G4Field: revised to improve ability to detect gravity field:
1110   Added new data member to identify gravity f    462   Added new data member to identify gravity field;
1111   Added new method IsGravityActive() to acces    463   Added new method IsGravityActive() to access this data member;
1112   Created new source file: moving constructor    464   Created new source file: moving constructors to it.
1113 - Changed G4UniformGravityField and G4Electro << 465 - Changed G4UniformGravityField and G4ElectroMagneticField 
1114   to accomodate this refinement.                 466   to accomodate this refinement.
1115                                                  467 
1116 November 2nd,  2011 P.Gumplinger - field-V09-    468 November 2nd,  2011 P.Gumplinger - field-V09-04-04
1117 --------------------------------                 469 --------------------------------
1118 - update list of files in sources.cmake          470 - update list of files in sources.cmake
1119                                                  471 
1120 October 28th,  2011 P.Gumplinger - field-V09-    472 October 28th,  2011 P.Gumplinger - field-V09-04-03
1121 --------------------------------                 473 --------------------------------
1122 - Added (uniform) gravity field capability.   << 474 - Added (uniform) gravity field capability. 
1123   New classes G4EqGravityField, G4UniformGrav    475   New classes G4EqGravityField, G4UniformGravityField.
1124                                                  476 
1125   *Required* for co-working tag in Transporta    477   *Required* for co-working tag in Transportation
1126                                                  478 
1127 October 12th,  2011 P.Gumplinger - field-V09-    479 October 12th,  2011 P.Gumplinger - field-V09-04-02
1128 --------------------------------                 480 --------------------------------
1129 - replaced: omegac = 0.105658387*GeV/mass * 2    481 - replaced: omegac = 0.105658387*GeV/mass * 2.837374841e-3*(rad/cm/kilogauss)
1130   with:     omegac = (eplus/particleMass)*c_l    482   with:     omegac = (eplus/particleMass)*c_light
1131   in G4EqEMFieldWithEDM.cc, G4Mag_SpinEqRhs.c    483   in G4EqEMFieldWithEDM.cc, G4Mag_SpinEqRhs.cc, G4EqEMFieldWithSpin.cc
1132   changed calculation:                        << 484   changed calculation: 
1133      std::sqrt(kineticEnergy*kineticEnergy +     485      std::sqrt(kineticEnergy*kineticEnergy + 2.0*restMass_c2*kineticEnergy);
1134   to:                                            486   to:
1135      std::sqrt(kineticEnergy*(kineticEnergy+2    487      std::sqrt(kineticEnergy*(kineticEnergy+2.0*restMass_c2))
1136   in G4FieldTrack.cc                             488   in G4FieldTrack.cc
1137                                                  489 
1138 August 11th,  2011 G.Cosmo - field-V09-04-01     490 August 11th,  2011 G.Cosmo - field-V09-04-01
1139 --------------------------                       491 --------------------------
1140 - Migrated to new G4Exception scheme for warn    492 - Migrated to new G4Exception scheme for warnings and errors.
1141 - Defined scheme for warnings/errors coding:     493 - Defined scheme for warnings/errors coding:
1142   + 1xxx for warnings, 0xxx for errors.          494   + 1xxx for warnings, 0xxx for errors.
1143   Code numbering:                                495   Code numbering:
1144   + 0001: not supported or implemented featur    496   + 0001: not supported or implemented features;
1145   + 0002: invalid setup/construct;               497   + 0002: invalid setup/construct;
1146   + 0003: invalid run condition;                 498   + 0003: invalid run condition;
1147   + 1001: incorrect setup; automatically adap    499   + 1001: incorrect setup; automatically adapted.
1148   + 1002: notification.                          500   + 1002: notification.
1149                                                  501 
1150 May 13th, 2011 J.Apostolakis                     502 May 13th, 2011 J.Apostolakis
1151 ----------------------------                     503 ----------------------------
1152 - Added new class G4TrialsCounter for keeping    504 - Added new class G4TrialsCounter for keeping statistics of trials.
1153 - Avoid printing out pointer in G4CachedMagne    505 - Avoid printing out pointer in G4CachedMagneticField::ReportStatistics().
1154 - Updated unit tests.                            506 - Updated unit tests.
1155                                                  507 
1156 May 12th,  2011 G.Cosmo - field-V09-04-00        508 May 12th,  2011 G.Cosmo - field-V09-04-00
1157 -----------------------                          509 -----------------------
1158 - Fixed compilation warnings from gcc-4.6.0 f    510 - Fixed compilation warnings from gcc-4.6.0 for variables set but not used.
1159                                                  511 
1160 May 5th,  2011 J.Apostolakis                     512 May 5th,  2011 J.Apostolakis
1161 ----------------------------                     513 ----------------------------
1162 - Reordered data members to group invariants,    514 - Reordered data members to group invariants, field parameters, etc...
1163                                                  515 
1164 Sep 10th,  2010 J.Apostolakis - field-V09-03-    516 Sep 10th,  2010 J.Apostolakis - field-V09-03-03
1165 -----------------------------                    517 -----------------------------
1166 - Revised constructor of G4MagErrorStepper to    518 - Revised constructor of G4MagErrorStepper to add number of State variables
1167 - Corrected MagErrorStepper to copy State Var    519 - Corrected MagErrorStepper to copy State Variable to output
1168 - Enable G4ConstRK4 to copy remaining State V    520 - Enable G4ConstRK4 to copy remaining State Variables (must integrate 6)
1169                                                  521 
1170 Sep 10th,  2010 J.Apostolakis - field-V09-03-    522 Sep 10th,  2010 J.Apostolakis - field-V09-03-02
1171 -----------------------------                    523 -----------------------------
1172 - New class G4MonopoleEq for rhs of d(pc)/ds     524 - New class G4MonopoleEq for rhs of d(pc)/ds propagation in field
1173   in SI units (V.Grichine).                      525   in SI units (V.Grichine).
1174 - Fixed passing of time in G4NystromRK4          526 - Fixed passing of time in G4NystromRK4
1175                                                  527 
1176 Jul 21st,  2010 T.Nikitina - field-V09-03-01     528 Jul 21st,  2010 T.Nikitina - field-V09-03-01
1177 --------------------------                       529 --------------------------
1178 - Fixed cases of memory corruption in G4RKG3_    530 - Fixed cases of memory corruption in G4RKG3_Stepper.
1179 - Fixed case of unused array data member in G    531 - Fixed case of unused array data member in G4ExactHelixStepper.
1180 - Removed useless code never executed in G4Co    532 - Removed useless code never executed in G4ConstRK4::Stepper().
1181 - Fixed initialization in G4NystromRK4 constr    533 - Fixed initialization in G4NystromRK4 constructor.
1182                                                  534 
1183 Jul 14th,  2010 G.Cosmo - field-V09-03-00        535 Jul 14th,  2010 G.Cosmo - field-V09-03-00
1184 -----------------------                          536 -----------------------
1185 - Added dummy initialization of members in co    537 - Added dummy initialization of members in constructors for G4CashKarpRKF45,
1186   G4ConstRK4, G4EqEMFieldWithEDM, G4EqEMField    538   G4ConstRK4, G4EqEMFieldWithEDM, G4EqEMFieldWithSpin, G4ExactHelixStepper,
1187   G4FieldTrack, G4MagHelicalStepper, G4MagInt    539   G4FieldTrack, G4MagHelicalStepper, G4MagInt_Driver, G4Mag_EqRhs,
1188   G4Mag_SpinEqRhs, G4Mag_UsualEqRhs, G4Nystro    540   G4Mag_SpinEqRhs, G4Mag_UsualEqRhs, G4NystromRK4, G4RKG3_Stepper,
1189   G4UniformElectricField, G4UniformElectricFi    541   G4UniformElectricField, G4UniformElectricField.
1190                                                  542 
1191 Nov 12th,  2009 J.Apostolakis - field-V09-02-    543 Nov 12th,  2009 J.Apostolakis - field-V09-02-09
1192 -----------------------------                    544 -----------------------------
1193 - G4MagIntegratorDriver:  activate check on i    545 - G4MagIntegratorDriver:  activate check on integration error for spin.
1194                                                  546 
1195 Nov 12th,  2009 J.Apostolakis - field-V09-02-    547 Nov 12th,  2009 J.Apostolakis - field-V09-02-08
1196 -----------------------------  (fix only)        548 -----------------------------  (fix only)
1197 - G4Nystrom:  Corrected interface method getF    549 - G4Nystrom:  Corrected interface method getField: array now has explicit dimension[4]
1198                 (Problem found by gcc 4.3 - i    550                 (Problem found by gcc 4.3 - it checked indices used in inline method! )
1199                                                  551 
1200 Nov 6th,  2009 P.Gumplinger - field-V09-02-07    552 Nov 6th,  2009 P.Gumplinger - field-V09-02-07
1201 ---------------------------                      553 ---------------------------
1202 - bug fix in G4EqEMFieldWithSpin and G4EqEMFi    554 - bug fix in G4EqEMFieldWithSpin and G4EqEMFieldWithEDM
1203   thanks to Hiromi Iinuma (KEK) see:             555   thanks to Hiromi Iinuma (KEK) see:
1204   http://hypernews.slac.stanford.edu/HyperNew    556   http://hypernews.slac.stanford.edu/HyperNews/geant4/get/emfields/161.html
1205                                                  557 
1206 Nov 5th,  2009 J.Apostolakis - field-V09-02-0    558 Nov 5th,  2009 J.Apostolakis - field-V09-02-06
1207 ----------------------------                     559 ----------------------------
1208 - G4MagIntegratorDriver.cc : Enabled call to     560 - G4MagIntegratorDriver.cc : Enabled call to ComputeRightHandSide
1209 - G4NystromRK4.cc          : Disabled auxilia    561 - G4NystromRK4.cc          : Disabled auxiliary code in Stepper (needed if
1210                               ComputeRightHan    562                               ComputeRightHandSide is not called.)
1211                                                  563 
1212 Nov 5th,  2009 J.Apostolakis - field-V09-02-0    564 Nov 5th,  2009 J.Apostolakis - field-V09-02-05
1213 ----------------------------                     565 ----------------------------
1214 - Added new virtual method CalculateRightHand    566 - Added new virtual method CalculateRightHandSide to G4MagIntegratorStepper for use
1215       in caching momentum (and field value) b    567       in caching momentum (and field value) by G4NystromRK4
1216       Default implementation in G4MagIntegrat    568       Default implementation in G4MagIntegratorStepper calls RightHandSide inline method.
1217 - G4Nystrom:  New Set/Get method for cache di    569 - G4Nystrom:  New Set/Get method for cache distance.
1218               Changed private data members in    570               Changed private data members in G4NystromRK4.
1219 - G4MagIntegratorDriver:  alternative call to    571 - G4MagIntegratorDriver:  alternative call to ComputeRightHandSide is not used (in comment)
1220               As a result G4NystromRK4 operat << 572               As a result G4NystromRK4 operates without reusing 
1221                                                  573 
1222 Nov 5th,  2009 J.Apostolakis - field-V09-02-0    574 Nov 5th,  2009 J.Apostolakis - field-V09-02-04
1223 ----------------------------                     575 ----------------------------
1224 - G4CachedMagneticField: New Simple class to  << 576 - G4CachedMagneticField: New Simple class to cache value of Magnetic Field. 
1225      Speeds up code when calculation of field    577      Speeds up code when calculation of field value is complex.
1226 - G4NystromRK4 :         New Stepper with Nys    578 - G4NystromRK4 :         New Stepper with Nystrom for magnetic field
1227      with analytic estimation of integration  << 579      with analytic estimation of integration error.  
1228      Greatly reduces number of field value pe    580      Greatly reduces number of field value per step.
1229 - Revised testPropagateMagField to use Cached    581 - Revised testPropagateMagField to use Cached Quadrupole field,
1230      and to cover G4NystromRK4 and G4ConstRK4    582      and to cover G4NystromRK4 and G4ConstRK4.
1231                                                  583 
1232 Nov 4th,  2009 P.Gumplinger - field-V09-02-03    584 Nov 4th,  2009 P.Gumplinger - field-V09-02-03
1233 ---------------------------                      585 ---------------------------
1234 - (minor change) remove comment from G4EqEMFi    586 - (minor change) remove comment from G4EqEMFieldWithSpin.cc
1235   add G4EqEMFieldWithEDM class: this is the R    587   add G4EqEMFieldWithEDM class: this is the RHS of EofM in a combined
1236   electric and magnetic field, with spin trac    588   electric and magnetic field, with spin tracking for both MDM and EDM terms.
1237   Thanks to Kevin Lynch, Phys. Dept. at Bosto    589   Thanks to Kevin Lynch, Phys. Dept. at Boston University.
1238                                                  590 
1239 May 18th, 2009 T.Nikitina - field-V09-02-02      591 May 18th, 2009 T.Nikitina - field-V09-02-02
1240 -------------------------                        592 -------------------------
1241 - Enhanced algorithm G4ChordFinder::ApproxCur    593 - Enhanced algorithm G4ChordFinder::ApproxCurvePointS() in order to speedup
1242   BrentLocator.                                  594   BrentLocator.
1243                                                  595 
1244 March 25th, 2009 G.Cosmo - field-V09-02-01       596 March 25th, 2009 G.Cosmo - field-V09-02-01
1245 ------------------------                         597 ------------------------
1246 - Some code cleanup and formatting...            598 - Some code cleanup and formatting...
1247                                                  599 
1248 March 6th, 2009 P.Gumplinger - field-V09-02-0    600 March 6th, 2009 P.Gumplinger - field-V09-02-00
1249 ----------------------------                     601 ----------------------------
1250 - Added 3rd term of BMT equation (Spin x Beta    602 - Added 3rd term of BMT equation (Spin x Beta x Efield) to G4EqEMFieldWithSpin,
1251   addresses emfields forum posting #155 (bug     603   addresses emfields forum posting #155 (bug report). Thanks to Kevin Lynch,
1252   Phys. Dept. at Boston University.              604   Phys. Dept. at Boston University.
1253 - Moved renormalization of spin from G4EqEMFi    605 - Moved renormalization of spin from G4EqEMFieldWithSpin and G4Mag_SpinEqRhs to
1254   G4ClassicalRK4 and G4SimpleHeum.               606   G4ClassicalRK4 and G4SimpleHeum.
1255 - Added Spin propagation errors to the criter    607 - Added Spin propagation errors to the criteria for 'OneGoodStep' in
1256   G4MagIntegratorDriver but actually don't ad    608   G4MagIntegratorDriver but actually don't add it (yet) to the decision logic.
1257                                                  609 
1258 November, 19th, 2008  P.Gumplinger - field-V0    610 November, 19th, 2008  P.Gumplinger - field-V09-01-05
1259 ----------------------------------               611 ----------------------------------
1260 - Renormalized the spin to 1 in G4EqEMFieldWi    612 - Renormalized the spin to 1 in G4EqEMFieldWithSpin and G4Mag_SpinEqRhs.
1261                                                  613 
1262 November, 7th, 2008   P.Gumplinger - field-V0    614 November, 7th, 2008   P.Gumplinger - field-V09-01-04
1263 ----------------------------------               615 ----------------------------------
1264 - Added SetAnomaly() and GetAnomaly() accesso    616 - Added SetAnomaly() and GetAnomaly() accessors to G4EqEMFieldWithSpin.
1265                                                  617 
1266 October, 28th, 2008   T.Nikitina - field-V09-    618 October, 28th, 2008   T.Nikitina - field-V09-01-03
1267 --------------------------------                 619 --------------------------------
1268 - Added 'ApproxCurveV' to method G4ChordFinde << 620 - Added 'ApproxCurveV' to method G4ChordFinder::ApproxCurvePointS() in 
1269   order to better calculate the curve length.    621   order to better calculate the curve length.
1270 - Some code cleanup.                             622 - Some code cleanup.
1271                                                  623 
1272 September, 18th, 2008   T.Nikitina               624 September, 18th, 2008   T.Nikitina
1273 ----------------------------------               625 ----------------------------------
1274 - Added new stepper class G4ConstRK4, perform    626 - Added new stepper class G4ConstRK4, performing integration of one step
1275   with error calculation in constant magnetic    627   with error calculation in constant magnetic field; implementation derived
1276   from G4ClassicalRK4.                           628   from G4ClassicalRK4.
1277                                                  629 
1278 July, 15th, 2008   J.Apostolakis - field-V09-    630 July, 15th, 2008   J.Apostolakis - field-V09-01-02
1279 --------------------------------                 631 --------------------------------
1280 - Revised signature of G4ChordFinder::FinderN    632 - Revised signature of G4ChordFinder::FinderNextChord(), making 'FieldTrack'
1281   argument passed a reference.                   633   argument passed a reference.
1282                                                  634 
1283 May, 28th, 2008   T.Nikitina                     635 May, 28th, 2008   T.Nikitina
1284 ----------------------------                     636 ----------------------------
1285 - G4ChordFinder: added new method ApproxCurve    637 - G4ChordFinder: added new method ApproxCurvePointS() using Brent second order
1286   location mechanism.                            638   location mechanism.
1287                                                  639 
1288 April 24th, 2008   T.Nikitina - field-V09-01-    640 April 24th, 2008   T.Nikitina - field-V09-01-01
1289 -----------------------------                    641 -----------------------------
1290 - Fix 'unused' non-initialized values of dydx    642 - Fix 'unused' non-initialized values of dydx in G4EqMagElectricField
1291   and G4EqEMFieldWithSpin.                       643   and G4EqEMFieldWithSpin.
1292                                                  644 
1293 January 17th, 2008   G.Cosmo - field-V09-01-0    645 January 17th, 2008   G.Cosmo - field-V09-01-00
1294 ----------------------------                     646 ----------------------------
1295 - G4CashKarpRKF45: deleted un-needed duplicat    647 - G4CashKarpRKF45: deleted un-needed duplicate (and unused) instance variable
1296  'fNumberOfVariables', already defined in G4M    648  'fNumberOfVariables', already defined in G4MagIntegratorStepper. (J.Ap.)
1297 - Some code cleanup.                             649 - Some code cleanup.
1298                                                  650 
1299 December 7th, 2007   J.Apostolakis & T.Nikiti    651 December 7th, 2007   J.Apostolakis & T.Nikitina - field-V09-00-03
1300 ---------------------------------------------    652 -----------------------------------------------
1301 - New class G4FieldManagerStore. It enables r    653 - New class G4FieldManagerStore. It enables resetting of all chord
1302   finders' state. Needed to address problem r    654   finders' state. Needed to address problem reported by user.
1303                                                  655 
1304 September 9th, 2007  G.Cosmo - field-V09-00-0    656 September 9th, 2007  G.Cosmo - field-V09-00-02a
1305 ----------------------------                     657 ----------------------------
1306 - Some code cleanup in G4MagHelicalStepper.cc    658 - Some code cleanup in G4MagHelicalStepper.cc.
1307                                                  659 
1308 August 30th, 2007    P.Gumplinger - field-V09    660 August 30th, 2007    P.Gumplinger - field-V09-00-02
1309 ---------------------------------                661 ---------------------------------
1310 - Add G4EqEMFieldWithSpin class to allow trac    662 - Add G4EqEMFieldWithSpin class to allow tracking of spin also in
1311   G4ElectroMagneticFields                        663   G4ElectroMagneticFields
1312                                                  664 
1313 August 21st, 2007    T.Nikitina - field-V09-0    665 August 21st, 2007    T.Nikitina - field-V09-00-01
1314 -------------------------------                  666 -------------------------------
1315 - Fix to DistChord() method for Helical Stepp    667 - Fix to DistChord() method for Helical Steppers: adopt 'special' case
1316   also for Ang<2pi not only for Ang<pi; use c    668   also for Ang<2pi not only for Ang<pi; use cos() in place of tan(), to
1317   improve CPU performance.                       669   improve CPU performance.
1318 - Improved AdvanceHelix() to be able to make     670 - Improved AdvanceHelix() to be able to make half step and full step
1319   in one call.                                   671   in one call.
1320 - In G4HelixMixedStepper added possibility to    672 - In G4HelixMixedStepper added possibility to call different steppers for
1321   small steps and add some statistics how off    673   small steps and add some statistics how offen different steppers are called.
1322 - G4RKG3_Stepper: improved internal algorithm    674 - G4RKG3_Stepper: improved internal algorithm to use pre-computed values;
1323   the stepper now gives comparable CPU perfor << 675   the stepper now gives comparable CPU performance as ClassicalRK4. 
1324 - Updated unit tests.                            676 - Updated unit tests.
1325                                                  677 
1326 August 17th, 2007    G.Cosmo - field-V09-00-0    678 August 17th, 2007    G.Cosmo - field-V09-00-00
1327 ----------------------------                     679 ----------------------------
1328 - Changed FatalException to EventMustBeAborte    680 - Changed FatalException to EventMustBeAborted in AccurateAdvance()
1329   if proposed integration step is negative.      681   if proposed integration step is negative.
1330                                                  682 
1331 June 8th, 2007    T.Nikitina - field-V08-03-0    683 June 8th, 2007    T.Nikitina - field-V08-03-03
1332 ----------------------------                     684 ----------------------------
1333 - Relaxed FatalException to Warning in G4MagI << 685 - Relaxed FatalException to Warning in G4MagIntegratorDriver::AccurateAdvance() 
1334   for case of step zero and return previous v << 686   for case of step zero and return previous value. This fixes problem 
1335   observed by ATLAS in release 8.3 when requi    687   observed by ATLAS in release 8.3 when requiring very accurate propagation
1336   -- ie using very small values for acceptabl    688   -- ie using very small values for acceptable integration error.
1337                                                  689 
1338 May 18th, 2007    T.Nikitina - field-V08-03-0    690 May 18th, 2007    T.Nikitina - field-V08-03-02
1339 ----------------------------                     691 ----------------------------
1340 - New class G4HelixMixedStepper, mixing helic    692 - New class G4HelixMixedStepper, mixing helical stepper and RK
1341   G4MagHelicalStepper                            693   G4MagHelicalStepper
1342 - Keep values of  inverse Radius, ..             694 - Keep values of  inverse Radius, ..
1343 - New calculation of DistChord for SteppingAn    695 - New calculation of DistChord for SteppingAngle > pi
1344   G4RKG3Stepper                                  696   G4RKG3Stepper
1345 - New calculation of DistChord for SteppingAn    697 - New calculation of DistChord for SteppingAngle > pi
1346                                                  698 
1347 May 16th, 2007    G.Cosmo - field-V08-03-01      699 May 16th, 2007    G.Cosmo - field-V08-03-01
1348 -------------------------                        700 -------------------------
1349 - Introduced new class G4ErrorMag_UsualEqRhs     701 - Introduced new class G4ErrorMag_UsualEqRhs used to reverse the magnetic
1350   field when propagation is backwards for err    702   field when propagation is backwards for error propagation (by P.Arce).
1351 - Coworks with tag "global-V08-03-02".           703 - Coworks with tag "global-V08-03-02".
1352                                                  704 
1353 May 11th, 2007    G.Cosmo - field-V08-03-00      705 May 11th, 2007    G.Cosmo - field-V08-03-00
1354 -------------------------                        706 -------------------------
1355 - Use call to G4GeometryTolerance instead of     707 - Use call to G4GeometryTolerance instead of kCarTolerance constant in
1356   G4MagIntegratorDriver.                         708   G4MagIntegratorDriver.
1357 - Requires tag "global-V08-03-00" and related    709 - Requires tag "global-V08-03-00" and related tag set.
1358                                                  710 
1359 May 10th, 2007    J.Apostolakis - field-V08-0    711 May 10th, 2007    J.Apostolakis - field-V08-02-01
1360 -------------------------------                  712 -------------------------------
1361 - G4MagIntegratorDriver:                      << 713 - G4MagIntegratorDriver: 
1362     * added protections against zero initial     714     * added protections against zero initial or internal step h=0, (exceptions)
1363     * revised (re)calculation of h, and quit  << 715     * revised (re)calculation of h, and quit loop if h/length < smallest-fraction (~ 10^-12) 
1364                                                  716 
1365 April 26th, 2007  T.Nikitina - field-V08-02-0    717 April 26th, 2007  T.Nikitina - field-V08-02-00
1366 ----------------------------                     718 ----------------------------
1367 - Corrected integration constants in G4MagHel    719 - Corrected integration constants in G4MagHelicalStepper
1368 - Added implementation of G4RKG3_Stepper, ste    720 - Added implementation of G4RKG3_Stepper, stepper derived from Geant3.
1369 - Updated NTST unit test. New unit test "fiel    721 - Updated NTST unit test. New unit test "field06" for comparison of steppers.
1370                                                  722 
1371 November 14th, 2006  J.Apostolakis - field-V0    723 November 14th, 2006  J.Apostolakis - field-V08-01-02
1372 ----------------------------------               724 ----------------------------------
1373 - G4MagIntegratorDriver                          725 - G4MagIntegratorDriver
1374   * Made first argument of GetDerivatives a r    726   * Made first argument of GetDerivatives a reference - avoid copy
1375 - G4MagIntegratorStepper                         727 - G4MagIntegratorStepper
1376   * Include the SetEquationOfMotion() method  << 728   * Include the SetEquationOfMotion() method in G4MagIntegratorStepper 
1377     (for Geant4e, as in field-V08-01-00)         729     (for Geant4e, as in field-V08-01-00)
1378   * Update of disclaimers.                       730   * Update of disclaimers.
1379                                                  731 
1380 November 13th, 2006  G.Cosmo - field-V08-01-0    732 November 13th, 2006  G.Cosmo - field-V08-01-01
1381 ----------------------------                     733 ----------------------------
1382 - G4FieldTrack:                                  734 - G4FieldTrack:
1383   o Implemented missing definition for GetCha    735   o Implemented missing definition for GetCharge().
1384   o Corrected 'const' qualifier for accessors    736   o Corrected 'const' qualifier for accessors in the subclass.
1385   o Cleanup ...                                  737   o Cleanup ...
1386 - NOTE: this tag is NOT including the change     738 - NOTE: this tag is NOT including the change below in G4MagIntegratorStepper.
1387                                                  739 
1388 June 21st, 2006  J.Apostolakis - field-V08-01    740 June 21st, 2006  J.Apostolakis - field-V08-01-00
1389 ------------------------------                   741 ------------------------------
1390 - Including the SetEquationOfMotion() method     742 - Including the SetEquationOfMotion() method in G4MagIntegratorStepper
1391                                                  743 
1392 June 22nd, 2006  J.Apostolakis - field-V08-00    744 June 22nd, 2006  J.Apostolakis - field-V08-00-07
1393 -----------------------------                    745 -----------------------------
1394 - G4ExactHelixStepper: reintroduced corrected << 746 - G4ExactHelixStepper: reintroduced corrected class 
1395     --> testPropagateMagField now tests it al    747     --> testPropagateMagField now tests it also (added)
1396 - G4MagHelicalStepper: made Stepper virtual ( << 748 - G4MagHelicalStepper: made Stepper virtual (for now) 
1397              to enable G4ExactHelixStepper to    749              to enable G4ExactHelixStepper to override it
1398                                                  750 
1399 June 21st, 2006  J.Apostolakis - field-V08-00    751 June 21st, 2006  J.Apostolakis - field-V08-00-06
1400 -----------------------------                    752 -----------------------------
1401 - G4ExactHelixStepper: taking out class       << 753 - G4ExactHelixStepper: taking out class 
1402    (provisional tag in case of difficulties w    754    (provisional tag in case of difficulties with class, revisions)
1403                                                  755 
1404 --- The field-V08-00-0x , x > 6, tags do not     756 --- The field-V08-00-0x , x > 6, tags do not include the change below
1405                                                  757 
1406 May 27th, 2006  J.Apostolakis - field-V08-00-    758 May 27th, 2006  J.Apostolakis - field-V08-00-05
1407 -----------------------------                    759 -----------------------------
1408 - G4FieldTrack: Fix for simple compilation er    760 - G4FieldTrack: Fix for simple compilation error on Sun.
1409                                                  761 
1410 May 23rd, 2006  J.Apostolakis - field-V08-00-    762 May 23rd, 2006  J.Apostolakis - field-V08-00-04
1411 -----------------------------                    763 -----------------------------
1412 - G4FieldTrack: Fix for memory leak for Charg    764 - G4FieldTrack: Fix for memory leak for ChargeState
1413    Made G4ChargeState a data member (has an i    765    Made G4ChargeState a data member (has an instance)
1414                                                  766 
1415 May 18th, 2006  J.Apostolakis - field-V08-00-    767 May 18th, 2006  J.Apostolakis - field-V08-00-03
1416 -----------------------------                    768 -----------------------------
1417 - G4FieldTrack: Fix for issue with gcc 4.0  (    769 - G4FieldTrack: Fix for issue with gcc 4.0  (mac)
1418                                                  770 
1419 May 16th, 2006  J.Apostolakis - field-V08-00-    771 May 16th, 2006  J.Apostolakis - field-V08-00-02
1420 -----------------------------                    772 -----------------------------
1421 - G4ExactHelixStepper                            773 - G4ExactHelixStepper
1422    Taken out alpha version - it was included  << 774    Taken out alpha version - it was included in error 
1423                                                  775 
1424 May 11th, 2006  J.Apostolakis - field-V08-00-    776 May 11th, 2006  J.Apostolakis - field-V08-00-01
1425 -----------------------------                    777 -----------------------------
1426 - G4FieldTrack                                   778 - G4FieldTrack
1427    Significant, provisional change:              779    Significant, provisional change:
1428      * Added charge and moments to FieldTrack << 780      * Added charge and moments to FieldTrack 
1429          (SetMethods,  and pointer to embedde    781          (SetMethods,  and pointer to embedded class G4ChargeState)
1430    Technical revisions:                          782    Technical revisions:
1431      * New constructor, with charge and witho    783      * New constructor, with charge and without velocity
1432      * New almost-default constructor (taking    784      * New almost-default constructor (taking a character)
1433    Also:                                      << 785    Also: 
1434      * New constructor to take const referenc    786      * New constructor to take const reference to Spin
1435      * New implementation method UpdateFourMo    787      * New implementation method UpdateFourMomentum
1436      * Streaming operator takes const referen << 788      * Streaming operator takes const reference, 
1437          and outputs momentum magnitude & dir    789          and outputs momentum magnitude & direction magn.
1438                                                  790 
1439 - G4ExactHelixStepper                            791 - G4ExactHelixStepper
1440    Included in error                          << 792    Included in error 
1441                                                  793 
1442 Apr 6th, 2006  J.Apostolakis - field-V08-00-0    794 Apr 6th, 2006  J.Apostolakis - field-V08-00-00
1443 ----------------------------                     795 ----------------------------
1444 - In G4FieldManager                              796 - In G4FieldManager
1445  Added missing  const GetChordFinder() method << 797  Added missing  const GetChordFinder() method -- Problem report #847 
1446  Corrected description (at top of include fil    798  Corrected description (at top of include file hh):
1447   - It is possible to set the field manager o    799   - It is possible to set the field manager of a logical volume (since long)
1448                                                  800 
1449                                                  801 
1450 Nov 9th, 2005  G.Cosmo - field-V07-01-00         802 Nov 9th, 2005  G.Cosmo - field-V07-01-00
1451 ----------------------                           803 ----------------------
1452 - Archived source code of field01 unit test,     804 - Archived source code of field01 unit test, now moved to examples/extended.
1453 - Migrated unit test NTST to use <sstream> an    805 - Migrated unit test NTST to use <sstream> and std:: namespace. Up-to-date
1454   with G4VParticleChange new interface.          806   with G4VParticleChange new interface.
1455                                                  807 
1456 Dec 2nd, 2004  G.Cosmo - field-V06-02-02         808 Dec 2nd, 2004  G.Cosmo - field-V06-02-02
1457 ----------------------                           809 ----------------------
1458 - Implemented migration to <cmath> for standa    810 - Implemented migration to <cmath> for standard mathematical functions.
1459                                                  811 
1460 Dec 2nd, 2004  J.Apostolakis - field-V06-02-0    812 Dec 2nd, 2004  J.Apostolakis - field-V06-02-01
1461 ----------------------------                     813 ----------------------------
1462 - Improvements to comments in key Field class    814 - Improvements to comments in key Field classes
1463 - Changes to test/NTST, renaming 'main()' fil    815 - Changes to test/NTST, renaming 'main()' file & modifying input files
1464 - Several improvements to test files             816 - Several improvements to test files
1465    testProElectroMagField.cc                     817    testProElectroMagField.cc
1466      * updating for new Electric Field inheri    818      * updating for new Electric Field inheritance (& need for
1467        different ChordFinder creation )          819        different ChordFinder creation )
1468      * adding columns to print-outs in spin c    820      * adding columns to print-outs in spin case for better diagnosis
1469    testPropagateMagField.cc                      821    testPropagateMagField.cc
1470      * Added verbosity level 1 to field Propa    822      * Added verbosity level 1 to field Propagator, relabelled old method.
1471    testPropagateSpin.cc                          823    testPropagateSpin.cc
1472      * Added more printout of parameters (sta    824      * Added more printout of parameters (state) of G4PropagatorInField
1473        and G4FieldManager before running each    825        and G4FieldManager before running each test.
1474    test/NTST                                     826    test/NTST
1475      * Renamed main() file to testNTST.cc and    827      * Renamed main() file to testNTST.cc and added G4UItcsh terminal.
1476                                                  828 
1477                                                  829 
1478 Oct 20th, 2004  P.Gumplinger - field-V06-02-0    830 Oct 20th, 2004  P.Gumplinger - field-V06-02-00
1479 ----------------------------                     831 ----------------------------
1480 - Added Set/GetAnomaly() methods in G4Mag_Spi    832 - Added Set/GetAnomaly() methods in G4Mag_SpinEqRhs.
1481                                                  833 
1482 Feb 9th, 2004  G.Cosmo - field-V06-00-00         834 Feb 9th, 2004  G.Cosmo - field-V06-00-00
1483 ----------------------                           835 ----------------------
1484 - G4UniformMagField.cc: added missing impleme    836 - G4UniformMagField.cc: added missing implementation for
1485   GetConstantFieldValue(). Fixes bug report #    837   GetConstantFieldValue(). Fixes bug report #575.
1486                                                  838 
1487 Nov 13th, 2003  J.Apostolakis - field-V05-02-    839 Nov 13th, 2003  J.Apostolakis - field-V05-02-08
1488 -----------------------------                    840 -----------------------------
1489 - G4ChordFinder:                              << 841 - G4ChordFinder:  
1490   o extended the arguments of AdvanceChordLim    842   o extended the arguments of AdvanceChordLimited  and  FindNextChord
1491     adding the current safety sphere (origin,    843     adding the current safety sphere (origin, radius), for use in optimising.
1492   o fixed set functions which had side effect    844   o fixed set functions which had side effect (on first fraction.)
1493 - Added new class G4ChordFinderSaf (using abo    845 - Added new class G4ChordFinderSaf (using above)
1494   o which uses safety to create longer chords << 846   o which uses safety to create longer chords, so enabling 
1495       propagation in fewer steps --> performa    847       propagation in fewer steps --> performance optimisation
1496 - G4FieldManager:                             << 848 - G4FieldManager: 
1497     Changed default accuracy parameters to mu    849     Changed default accuracy parameters to much better values:
1498         Epsilon Min Default  to 5.0e-5  from     850         Epsilon Min Default  to 5.0e-5  from 5.0e-7  (too small)
1499         Epsilon Max Default  to 0.001   from     851         Epsilon Max Default  to 0.001   from 0.05    (far too big)
1500                                                  852 
1501 Nov  7th, 2003  J.Apostolakis - field-V05-02-    853 Nov  7th, 2003  J.Apostolakis - field-V05-02-07
1502 -----------------------------                    854 -----------------------------
1503 - G4ChordFinder                               << 855 - G4ChordFinder 
1504   o Made this a base class                       856   o Made this a base class
1505     * to enable specialised implementations      857     * to enable specialised implementations
1506     * virtual methods: FindNextChord, PrintSt    858     * virtual methods: FindNextChord, PrintStatistics)
1507     * new method AccumulateStatistics to aid     859     * new method AccumulateStatistics to aid in this
1508                                                  860 
1509   o New default value of                         861   o New default value of                                      Accuracy!!
1510       Delta Chord        to  0.25 mm    (from    862       Delta Chord        to  0.25 mm    (from 3.00 mm)     <-----
1511                                               << 863                                                                  
1512 - G4FieldManager                                 864 - G4FieldManager
1513   o Changed default values of                    865   o Changed default values of
1514       Delta One Step     to  0.010 mm   (from    866       Delta One Step     to  0.010 mm   (from 0.25 mm)     <-----
1515       Delta Intersection to  0.001 mm   (from    867       Delta Intersection to  0.001 mm   (from 0.10 mm)     <-----
1516     for increased default accuracy               868     for increased default accuracy
1517   o Use field's DoesFieldChangesEnergy method    869   o Use field's DoesFieldChangesEnergy method to set relevant member variable
1518                                                  870 
1519 Nov 7th, 2003  J.Apostolakis - field-V05-02-0    871 Nov 7th, 2003  J.Apostolakis - field-V05-02-06
1520 ----------------------------                     872 ----------------------------
1521 - G4ChordFinder                                  873 - G4ChordFinder
1522    Created new class members for parameters u    874    Created new class members for parameters used in heuristics:
1523        fFirstFraction            for first st    875        fFirstFraction            for first step
1524        fFractionLast             fraction of     876        fFractionLast             fraction of last step, if redoing
1525        fFractionNextEstimate     confidence i    877        fFractionNextEstimate     confidence in step est from chord
1526        fMultipleRadius           for small ra    878        fMultipleRadius           for small radii of curve
1527    New method to Print Statistics.               879    New method to Print Statistics.
1528    Verbosity to enable optional printing of s    880    Verbosity to enable optional printing of stats in destructor.
1529                                                  881 
1530 Nov 7th, 2003  J.Apostolakis - field-V05-02-0    882 Nov 7th, 2003  J.Apostolakis - field-V05-02-05
1531 ----------------------------                     883 ----------------------------
1532 - G4ChordFinder                                  884 - G4ChordFinder
1533   o Added simple statistics (with access meth    885   o Added simple statistics (with access methods)
1534 - test/NTST                                      886 - test/NTST
1535   o Added new test, taken from D. Williams' e    887   o Added new test, taken from D. Williams' exampleNTST
1536      modified and maintained by J. Apostolaki << 888      modified and maintained by J. Apostolakis 
1537                                                  889 
1538 Nov 5th, 2003  J.Apostolakis - field-V05-02-0    890 Nov 5th, 2003  J.Apostolakis - field-V05-02-04
1539 ----------------------------                     891 ----------------------------
1540 - G4FieldManager                                 892 - G4FieldManager
1541   o Added Get/Set Min/Max imumEpsilonStep        893   o Added Get/Set Min/Max imumEpsilonStep
1542   o Added fEpsilonMin fEpsilonMax & default t << 894   o Added fEpsilonMin fEpsilonMax & default to member variables. 
1543    >> Now these can be tailored for different    895    >> Now these can be tailored for different parts of a detector or setup
1544                                                  896 
1545 - G4Field G4ElectroMagneticField G4MagneticFi    897 - G4Field G4ElectroMagneticField G4MagneticField
1546   o Adding the virtual method   DoesFieldChan    898   o Adding the virtual method   DoesFieldChangeEnergy()  [to be used later]
1547   o So that G4ElectroMagneticField derives fr    899   o So that G4ElectroMagneticField derives from G4Field
1548     and G4MagneticField derives from G4Electr    900     and G4MagneticField derives from G4ElectroMagneticField
1549                                                  901 
1550 - G4MagErrorStepper and derived classes          902 - G4MagErrorStepper and derived classes
1551     (G4ClassicalRK4 G4SimpleRunge G4ExplicitE    903     (G4ClassicalRK4 G4SimpleRunge G4ExplicitEuler G4ImplicitEuler G4SimpleHeum)
1552   o the constructors take G4EquationOfMotion     904   o the constructors take G4EquationOfMotion in place of a G4Mag_EqRhs
1553     as it these applicable to all types of eq << 905     as it these applicable to all types of equations 
1554      (not just ones for Magnetic field)          906      (not just ones for Magnetic field)
1555                                                  907 
1556 - G4EqMagElectricField                           908 - G4EqMagElectricField
1557   o derives from G4EquationOfMotion              909   o derives from G4EquationOfMotion
1558                                                  910 
1559 - G4ChordFinder                                  911 - G4ChordFinder
1560   o Moved simple constructor to .cc file (tog    912   o Moved simple constructor to .cc file (together with 'complex' one)
1561   o Changed fDefaultDeltaChord to a constant     913   o Changed fDefaultDeltaChord to a constant member variable (from class var.)
1562                                                  914 
1563 Nov 4th, 2003  G.Cosmo - field-V05-02-03         915 Nov 4th, 2003  G.Cosmo - field-V05-02-03
1564 ----------------------                           916 ----------------------
1565 Undocumented.                                    917 Undocumented.
1566                                                  918 
1567 Nov 4th, 2003  G.Cosmo - field-V05-02-02         919 Nov 4th, 2003  G.Cosmo - field-V05-02-02
1568 ----------------------                           920 ----------------------
1569 - G4ChordFinder.cc:                              921 - G4ChordFinder.cc:
1570   o Fixed compilation problem occuring when G    922   o Fixed compilation problem occuring when G4DEBUG_FIELD was set.
1571                                                  923 
1572 Oct 31st, 2003  G.Cosmo - field-V05-02-01        924 Oct 31st, 2003  G.Cosmo - field-V05-02-01
1573 -----------------------                          925 -----------------------
1574 - Code cleanup and removal of redundant heade    926 - Code cleanup and removal of redundant header includes, replaced
1575   where necessary by forward declarations.       927   where necessary by forward declarations.
1576                                                  928 
1577 Oct 24th, 2003  G.Cosmo - field-V05-02-00        929 Oct 24th, 2003  G.Cosmo - field-V05-02-00
1578 -----------------------                          930 -----------------------
1579 - Migrated to use new G4Exception scheme.        931 - Migrated to use new G4Exception scheme.
1580 - Updated outputs of unit tests.                 932 - Updated outputs of unit tests.
1581                                                  933 
1582 Jun 25th, 2003  J.Apostolakis - field-V05-01-    934 Jun 25th, 2003  J.Apostolakis - field-V05-01-06
1583 -----------------------------                    935 -----------------------------
1584 - Suppressed printing of statistics (by defau    936 - Suppressed printing of statistics (by default) in MagIntegrationDriver.
1585 - Fix for unused variables warning in ChordFi    937 - Fix for unused variables warning in ChordFinder.
1586                                                  938 
1587 Jun 24th, 2003  J.Apostolakis - field-V05-01-    939 Jun 24th, 2003  J.Apostolakis - field-V05-01-05
1588 -----------------------------                    940 -----------------------------
1589 - Fix for problems introduced in field-V05-01    941 - Fix for problems introduced in field-V05-01-03:
1590   o G4ChordFinder:                               942   o G4ChordFinder:
1591     - Fixed unitialised variable for next ste    943     - Fixed unitialised variable for next step (now used for optimisation).
1592     - Protected assignment of 'fLastStepEstim    944     - Protected assignment of 'fLastStepEstimate_Unconstrained' in case of
1593       unitialised value.                         945       unitialised value.
1594                                                  946 
1595 Jun 21st, 2003  J.Apostolakis - field-V05-01-    947 Jun 21st, 2003  J.Apostolakis - field-V05-01-04
1596 -----------------------------                    948 -----------------------------
1597 - G4FieldManager:                                949 - G4FieldManager:
1598   o Revised into 'slightly' abstract class wi    950   o Revised into 'slightly' abstract class with one (new) virtual method:
1599       ConfigureForTrack( const G4Track *)        951       ConfigureForTrack( const G4Track *)
1600     to enable the user to configure it with d    952     to enable the user to configure it with different accuracy parameters
1601     depending on energy, particle id, volume,    953     depending on energy, particle id, volume, or other track state.
1602     Currently by default, no such configurati    954     Currently by default, no such configuration action is undertaken.
1603                                                  955 
1604 Jun 21st, 2003  J.Apostolakis - field-V05-01-    956 Jun 21st, 2003  J.Apostolakis - field-V05-01-03
1605 -----------------------------                    957 -----------------------------
1606 - Revised G4ChordFinder:                         958 - Revised G4ChordFinder:
1607   * FindNextChord now provides next Step esti    959   * FindNextChord now provides next Step estimate (for accuracy in Integr.)
1608   * AdvanceChordLimited to use                   960   * AdvanceChordLimited to use
1609     - above extra argument to FindNextChord      961     - above extra argument to FindNextChord
1610     - the next Step argument as initial-step     962     - the next Step argument as initial-step suggested to Accurate Advance
1611 - G4MagIntegratorDriver:                         963 - G4MagIntegratorDriver:
1612   * Added extra argument to Accurate Advance:    964   * Added extra argument to Accurate Advance:
1613     hinitial: suggested initial step size        965     hinitial: suggested initial step size
1614 - Note:                                          966 - Note:
1615   * Purpose:  performance boost with small/li << 967   * Purpose:  performance boost with small/limited changes, 
1616     including minor revisions of interfaces.     968     including minor revisions of interfaces.
1617                                                  969 
1618 Jun 20th, 2003  J.Apostolakis - field-V05-01-    970 Jun 20th, 2003  J.Apostolakis - field-V05-01-02
1619 -----------------------------                    971 -----------------------------
1620 - G4MagIntegratorDriver Quick Advance:           972 - G4MagIntegratorDriver Quick Advance:
1621   o Took out two unneccessary square roots an    973   o Took out two unneccessary square roots and two divisions.
1622 - Notes:                                         974 - Notes:
1623   1) Pure magnetic, electric, spin field test    975   1) Pure magnetic, electric, spin field test are completed.
1624   2) Purpose:  performance boost with small c    976   2) Purpose:  performance boost with small changes.
1625                                                  977 
1626 Jun 20th, 2003  J.Apostolakis - field-V05-01-    978 Jun 20th, 2003  J.Apostolakis - field-V05-01-01
1627 -----------------------------                    979 -----------------------------
1628 - G4MagIntegratorDriver:                         980 - G4MagIntegratorDriver:
1629   o Corrected neglected conversion to <std> f    981   o Corrected neglected conversion to <std> from "G4std".
1630 - Migrated unit tests to <std>.                  982 - Migrated unit tests to <std>.
1631                                                  983 
1632 Jun 19th, 2003  J.Apostolakis - field-V05-01-    984 Jun 19th, 2003  J.Apostolakis - field-V05-01-00
1633 -----------------------------                 << 985 ----------------------------- 
1634 - G4ChordFinder:                                 986 - G4ChordFinder:
1635   o Corrected simple constructor to initialis    987   o Corrected simple constructor to initialise several member variables
1636     including LastStepEstimate_Unconstrained.    988     including LastStepEstimate_Unconstrained.
1637 - G4MagIntegratorDriver:                         989 - G4MagIntegratorDriver:
1638   o Keep simple statistics on number of steps    990   o Keep simple statistics on number of steps, total error and step size.
1639   o Took out an unneccessary square root (in     991   o Took out an unneccessary square root (in loop).
1640 - NOTE:    tests field0X are to be migrated.     992 - NOTE:    tests field0X are to be migrated.
1641   Purpose: fixes, small performance boost, si    993   Purpose: fixes, small performance boost, simple statistics.
1642                                                  994 
1643 Apr 2nd, 2003      G. Cosmo - field-V05-00-01    995 Apr 2nd, 2003      G. Cosmo - field-V05-00-01
1644 ---------------------------                      996 ---------------------------
1645 - Created .cc files for G4MagneticField and G    997 - Created .cc files for G4MagneticField and G4ElecroMagneticField.
1646 - Fixed definition of copy constructors in fi    998 - Fixed definition of copy constructors in fields inheritance chain.
1647 - Moved obsolete method StepWithEst() to priv    999 - Moved obsolete method StepWithEst() to private in G4RKG3_Stepper,
1648   G4CashKarpRKF45 and G4ClassicalRK4.            1000   G4CashKarpRKF45 and G4ClassicalRK4.
1649 - Cleared strict pedantic warnings.              1001 - Cleared strict pedantic warnings.
1650                                                  1002 
1651 Feb 5th, 2003      G. Cosmo - field-V05-00-00    1003 Feb 5th, 2003      G. Cosmo - field-V05-00-00
1652 ---------------------------                      1004 ---------------------------
1653 - Removed redundant inclusions of PhysicalCon    1005 - Removed redundant inclusions of PhysicalConstants.h or SystemOfUnits.h.
1654   Now using directly CLHEP's headers.            1006   Now using directly CLHEP's headers.
1655                                                  1007 
1656 Dec 12th, 2002     G. Cosmo - field-V04-01-06    1008 Dec 12th, 2002     G. Cosmo - field-V04-01-06
1657 ---------------------------                      1009 ---------------------------
1658 - Moved unused variable 'nStpPr' to debug sec    1010 - Moved unused variable 'nStpPr' to debug section in G4MagIntegratorDriver.cc,
1659   method AccurateAdvance().                      1011   method AccurateAdvance().
1660                                                  1012 
1661 Dec 06th, 2002     G. Cosmo - field-V04-01-05    1013 Dec 06th, 2002     G. Cosmo - field-V04-01-05
1662 ---------------------------                      1014 ---------------------------
1663 - Merged changes by Makoto for migration to n    1015 - Merged changes by Makoto for migration to new G4ApplicationState in
1664   messengers of unit tests.                      1016   messengers of unit tests.
1665                                                  1017 
1666 Nov 29th, 2002     J. Apostolakis - field-V04    1018 Nov 29th, 2002     J. Apostolakis - field-V04-01-04
1667 ---------------------------------                1019 ---------------------------------
1668 Further fixes for unitialised variable - in o    1020 Further fixes for unitialised variable - in other steppers:
1669 G4ExplicitEuler, G4ImplicitEuler, G4ImplicitE    1021 G4ExplicitEuler, G4ImplicitEuler, G4ImplicitEuler
1670                                                  1022 
1671 Large memory leak fix for G4ImplicitEuler, sm    1023 Large memory leak fix for G4ImplicitEuler, small for ExplicitEuler.
1672 Test accuracy requirements for spin adjusted.    1024 Test accuracy requirements for spin adjusted.
1673                                                  1025 
1674 Nov 20th, 2002     J. Apostolakis - field-V04    1026 Nov 20th, 2002     J. Apostolakis - field-V04-01-03
1675 ---------------------------------                1027 ---------------------------------
1676 Further fixes for unitialised variables:         1028 Further fixes for unitialised variables:
1677                                                  1029 
1678 * G4MagIntegratorStepper                         1030 * G4MagIntegratorStepper
1679   -  Created instance variables for number of    1031   -  Created instance variables for number of Integration, State variables
1680                                                  1032 
1681 * G4MagErrorStepper                              1033 * G4MagErrorStepper
1682   -  Utilise number of State variables to ini    1034   -  Utilise number of State variables to initialise full state of Output.
1683                                                  1035 
1684 * G4Mag_SpinEqRhs                                1036 * G4Mag_SpinEqRhs
1685   -  Initialise the values of dydx that we do    1037   -  Initialise the values of dydx that we do not update.
1686                                                  1038 
1687 Note: Undoing these changes and the ones belo << 1039 Note: Undoing these changes and the ones below would enable the user to see 
1688         if undefined values are used in varia << 1040         if undefined values are used in variables that he/she expects to 
1689         have integrated.                         1041         have integrated.
1690       BUT the fix assists us to find truly un    1042       BUT the fix assists us to find truly undefined values elsewhere
1691         -- if they exist -- using valgrind.      1043         -- if they exist -- using valgrind.
1692                                                  1044 
1693 Nov  9th, 2002     J. Apostolakis - field-V04    1045 Nov  9th, 2002     J. Apostolakis - field-V04-01-02
1694 ---------------------------------                1046 ---------------------------------
1695 Fixes to address use of uninitialised variabl    1047 Fixes to address use of uninitialised variable in seting values of FieldTrack
1696 (this was done by design, but was neither ide    1048 (this was done by design, but was neither ideal or always well-behaved.)
1697 Changed:                                         1049 Changed:
1698                                                  1050 
1699 * G4MagIntegratorDriver                          1051 * G4MagIntegratorDriver
1700   - Added instance variables for number of In    1052   - Added instance variables for number of Integration, State variables
1701   - Initialise all State variables of Output     1053   - Initialise all State variables of Output with values from initial variables.
1702   - Only the Integration variables will be in    1054   - Only the Integration variables will be integrated
1703                                                  1055 
1704 * G4ClassicalRK4 and G4MagErrorStepper           1056 * G4ClassicalRK4 and G4MagErrorStepper
1705   - Copy the initial time to intermediate and << 1057   - Copy the initial time to intermediate and output C-vectors, 
1706      in order to provide a zero-eth estimate     1058      in order to provide a zero-eth estimate value.
1707   Note1: Should clean-up this fix, making it     1059   Note1: Should clean-up this fix, making it similar to Driver (above)
1708   Note2: Should *not* be used for time varyin << 1060   Note2: Should *not* be used for time varying field unless created 
1709            with at least 8 integration variab    1061            with at least 8 integration variables
1710 ---------------------------------             << 1062 ---------------------------------  
1711 G4ChordFinder.cc                                 1063 G4ChordFinder.cc
1712   - Correction from zero dChord                  1064   - Correction from zero dChord
1713       which is does not update the Unconstrai    1065       which is does not update the Unconstrained step estimate (state)
1714   - Added instance variables to store number     1066   - Added instance variables to store number of calls and chord-trials
1715       and new print method for 'debugging'       1067       and new print method for 'debugging'
1716                                                  1068 
1717 G4Mag_UsualEqRhs.cc                              1069 G4Mag_UsualEqRhs.cc
1718   - Attempted approximations for speedup  *ov    1070   - Attempted approximations for speedup  *overwritten* by full inverse sqrt.
1719                                                  1071 
1720                                                  1072 
1721 Oct  29th, 2002   J. Apostolakis - test-V04-0    1073 Oct  29th, 2002   J. Apostolakis - test-V04-01-02
1722 --------------------------------                 1074 --------------------------------
1723 - Changed output of tests for small output ch    1075 - Changed output of tests for small output change (GeV->MeV)
1724                                                  1076 
1725 Oct  29th, 2002   J. Apostolakis - test-V04-0    1077 Oct  29th, 2002   J. Apostolakis - test-V04-01-02
1726 --------------------------------                 1078 --------------------------------
1727 - (Only changed and tagged test subdirectory)    1079 - (Only changed and tagged test subdirectory)
1728   Changed tests to use the new method SetChar << 1080   Changed tests to use the new method SetChargeMomentumMass of 
1729   PropagatorInField in order to be ready for  << 1081   PropagatorInField in order to be ready for its full use in 
1730   G4PropagatorInField.                           1082   G4PropagatorInField.
1731   (A key problem at end-July was this non-pre    1083   (A key problem at end-July was this non-preparedness of the unit tests.)
1732                                                  1084 
1733 Jul  24th, 2002   G. Cosmo - field-V04-01-01     1085 Jul  24th, 2002   G. Cosmo - field-V04-01-01
1734 --------------------------                       1086 --------------------------
1735 - G4FieldManager[.hh.cc]: made fDefault_Delta    1087 - G4FieldManager[.hh.cc]: made fDefault_Delta_One_Step_Value and
1736   fDefault_Delta_Intersection_Val normal cons    1088   fDefault_Delta_Intersection_Val normal constants (not static) to
1737   resolve initialisation problems. Coworks wi    1089   resolve initialisation problems. Coworks with tag "geomvol-V04-01-01".
1738   Fixes problem report #383.                     1090   Fixes problem report #383.
1739                                                  1091 
1740 Jul  23rd, 2002   G. Cosmo - field-V04-01-00     1092 Jul  23rd, 2002   G. Cosmo - field-V04-01-00
1741 --------------------------                       1093 --------------------------
1742 - G4MagIntegratorDriver.cc: cleared warning o    1094 - G4MagIntegratorDriver.cc: cleared warning of unused variable.
1743   Protected variable 'nStpPr' with G4DEBUG_FI    1095   Protected variable 'nStpPr' with G4DEBUG_FIELD.
1744 - Updated reference outputs and some other up    1096 - Updated reference outputs and some other updates to unit tests.
1745                                                  1097 
1746 Jun  25th, 2002   J. Apostolakis - field-V04-    1098 Jun  25th, 2002   J. Apostolakis - field-V04-00-05
1747 --------------------------------                 1099 --------------------------------
1748 - G4ChordFinder.cc                               1100 - G4ChordFinder.cc
1749   In NewStep:  fixed case of stepTrial >> ste    1101   In NewStep:  fixed case of stepTrial >> stepTrialOld, to take large multiple - not small;
1750        (it was treated the same as stepTrial     1102        (it was treated the same as stepTrial << old)
1751   Added guard for stepTrial==0.0 in FindNextC    1103   Added guard for stepTrial==0.0 in FindNextChord
1752 - G4MagIntegratorDriver.cc                       1104 - G4MagIntegratorDriver.cc
1753   Added protection against error of 0.0 in Co    1105   Added protection against error of 0.0 in ComputeNewStepSize.
1754                                                  1106 
1755 - G4EquationOfMotion                             1107 - G4EquationOfMotion
1756   Made RightHandSide an inline method         << 1108   Made RightHandSide an inline method 
1757   In GetFieldValue signature of Point is doub    1109   In GetFieldValue signature of Point is double[4], instead of double[3]
1758   Defined G4maximum_number_of_field_component    1110   Defined G4maximum_number_of_field_components as enum
1759                                                  1111 
1760 Jun   7th, 2002   J. Apostolakis - field-V04-    1112 Jun   7th, 2002   J. Apostolakis - field-V04-00-04
1761 --------------------------------                 1113 --------------------------------
1762  - G4Mag_SpinEqRhs.cc                            1114  - G4Mag_SpinEqRhs.cc
1763     o Fix to momentum component of Rhs.          1115     o Fix to momentum component of Rhs.
1764                                                  1116 
1765 May  31st, 2002   J. Apostolakis - field-V04-    1117 May  31st, 2002   J. Apostolakis - field-V04-00-03
1766 --------------------------------                 1118 --------------------------------
1767  - G4MagHelicalStepper.icc                       1119  - G4MagHelicalStepper.icc
1768     o Fix to LinearStep (correcting previous     1120     o Fix to LinearStep (correcting previous fix/cosmetic)
1769  - G4ChordFinder.cc                              1121  - G4ChordFinder.cc
1770     o Corrective behaviour for very small or     1122     o Corrective behaviour for very small or large changes of 'new step'
1771        [observed in complex 3-d fields (purgi    1123        [observed in complex 3-d fields (purging magnet),  or
1772                     approximate equations of     1124                     approximate equations of motion ]
1773  - G4MagIntegratorDriver                         1125  - G4MagIntegratorDriver
1774     o More information in debug printing (tan    1126     o More information in debug printing (tangent cosine, norm)
1775                                                  1127 
1776 May   7th, 2002   J. Apostolakis                 1128 May   7th, 2002   J. Apostolakis
1777 --------------------------------                 1129 --------------------------------
1778 - G4MagIntegratorDriver  -  ( on trunk )         1130 - G4MagIntegratorDriver  -  ( on trunk )
1779   * Fix to update the field track for steps s << 1131   * Fix to update the field track for steps smaller than the chord finder's 
1780 minstep.                                      << 1132 minstep. 
1781                                                  1133 
1782                                                  1134 
1783 April 19th, 2002  J. Apostolakis   (not inclu    1135 April 19th, 2002  J. Apostolakis   (not included in tag field-V04-00-02)
1784 --------------------------------                 1136 --------------------------------
1785 - G4MagIntegratorDriver.hh,cc     (on trunk)     1137 - G4MagIntegratorDriver.hh,cc     (on trunk)
1786   * Bug fix:  last step can now only be trigg    1138   * Bug fix:  last step can now only be triggerred if x+h > x2.
1787   * Debugging methods improved.                  1139   * Debugging methods improved.
1788                                                  1140 
1789 May   7th, 2002   J. Apostolakis - field-V04-    1141 May   7th, 2002   J. Apostolakis - field-V04-00-02
1790 --------------------------------                 1142 --------------------------------
1791  Tag including only two changes below:           1143  Tag including only two changes below:
1792   - Putting aside the other fixes/changes (as << 1144   - Putting aside the other fixes/changes (as the one above) to 
1793 G4MagIntegratorDriver, tagging only the fix t << 1145 G4MagIntegratorDriver, tagging only the fix to update the field track 
1794 for steps smaller than the chord finder's min    1146 for steps smaller than the chord finder's minstep.
1795                                                  1147 
1796 May   7th, 2002   J. Apostolakis                 1148 May   7th, 2002   J. Apostolakis
1797 --------------------------------                 1149 --------------------------------
1798 - G4MagIntegratorDriver  -  **  branch ** on     1150 - G4MagIntegratorDriver  -  **  branch ** on 1.20 **
1799   * Fix to update the field track for steps s << 1151   * Fix to update the field track for steps smaller than the chord finder's 
1800 minstep.                                      << 1152 minstep. 
1801                                                  1153 
1802 May   7th, 2002   J. Apostolakis                 1154 May   7th, 2002   J. Apostolakis
1803 --------------------------------                 1155 --------------------------------
1804 - G4MagIntegratorStepper                         1156 - G4MagIntegratorStepper
1805   * Changed RightHandSide from a virtual meth << 1157   * Changed RightHandSide from a virtual method to an inline (non-virtual) 
1806       method -- it is not and should not be c    1158       method -- it is not and should not be changed by derived classes.
1807                                                  1159 
1808 Mar 28th, 2002  J. Apostolakis - field-V04-00    1160 Mar 28th, 2002  J. Apostolakis - field-V04-00-01
1809 -----------------------                          1161 -----------------------
1810 - Fixed LinearStep in G4MagHelicalStepper (ex << 1162 - Fixed LinearStep in G4MagHelicalStepper (expected unit direction), 
1811     that had not been updated for new integra    1163     that had not been updated for new integration variable (momentum).
1812     --> found in testing helical steppers in  << 1164     --> found in testing helical steppers in BaBar setup, 
1813          in region of negligible field.          1165          in region of negligible field.
1814                                                  1166 
1815 - Changed maximum number of steps in driver,  << 1167 - Changed maximum number of steps in driver, 
1816     halving from 500/order to 250/order.         1168     halving from 500/order to 250/order.
1817                                                  1169 
1818 Mar 28th, 2002  J. Apostolakis                   1170 Mar 28th, 2002  J. Apostolakis
1819 -----------------------                          1171 -----------------------
1820 - Committed directory "OtherField" with examp    1172 - Committed directory "OtherField" with examples of fields,
1821     Delphi, Quadropole etc.                      1173     Delphi, Quadropole etc.
1822                                                  1174 
1823 - Updated outputs of testPropagateMagField fo    1175 - Updated outputs of testPropagateMagField for new version of source,
1824     that has 3rd test case.                      1176     that has 3rd test case.
1825                                                  1177 
1826 - Added new runs and outputs for testProElect << 1178 - Added new runs and outputs for testProElectroMagField, with 
1827     several steppers, and modified test scrip    1179     several steppers, and modified test script test.sh accordingly.
1828                                                  1180 
1829                                                  1181 
1830 Feb  2nd, 2002   V. Grichine                     1182 Feb  2nd, 2002   V. Grichine
1831 ------------------------                         1183 ------------------------
1832 Update of test/field02 to utilise new feature << 1184 Update of test/field02 to utilise new features 
1833   - for Electric Field, to signal that a fiel    1185   - for Electric Field, to signal that a field modifies the energy;
1834   - updating of time by integration, for time    1186   - updating of time by integration, for time dependent fields.
1835                                                  1187 
1836 Jan 10th, 2002  G. Cosmo - field-V04-00-00       1188 Jan 10th, 2002  G. Cosmo - field-V04-00-00
1837 ------------------------                         1189 ------------------------
1838 - Activated G4DEBUG_FIELD in GNUmakefile.        1190 - Activated G4DEBUG_FIELD in GNUmakefile.
1839                                                  1191 
1840 Jan 7th, 2002  J. Apostolakis                    1192 Jan 7th, 2002  J. Apostolakis
1841 -----------------------------                    1193 -----------------------------
1842 - G4MagHelicalStepper.cc: renamed local varia    1194 - G4MagHelicalStepper.cc: renamed local variables "*Momentum*" to "*Velocity*".
1843                                                  1195 
1844 Dec 4th, 2001  G. Cosmo - field-V03-02-08        1196 Dec 4th, 2001  G. Cosmo - field-V03-02-08
1845 -----------------------                          1197 -----------------------
1846 - Fixed interface to virtual functions in the    1198 - Fixed interface to virtual functions in the inheritance chain.
1847   Added 'virtual' qualifier to destructor and    1199   Added 'virtual' qualifier to destructor and GetFieldValue() for subclasses
1848   of G4Field which may act as base class for     1200   of G4Field which may act as base class for user-defined fields.
1849   Modified files: G4MagneticField.hh, G4Unifo    1201   Modified files: G4MagneticField.hh, G4UniformElectricField[.hh.cc],
1850                   G4UniformMagField.hh.          1202                   G4UniformMagField.hh.
1851 - G4ChordFinder.cc: the unphysical curve leng    1203 - G4ChordFinder.cc: the unphysical curve length exception has been moved to
1852   inside #ifdef G4DEBUG_FIELD. Other #ifdef r    1204   inside #ifdef G4DEBUG_FIELD. Other #ifdef renamed to G4DEBUG_FIELD.
1853 - G4LineSection[.hh.cc]: correction for A=B w    1205 - G4LineSection[.hh.cc]: correction for A=B when the distance from P to A
1854   is returned (V.Grichine).                      1206   is returned (V.Grichine).
1855                                                  1207 
1856 Nov 28th, 2001  J. Apostolakis - field-V03-02    1208 Nov 28th, 2001  J. Apostolakis - field-V03-02-07
1857 ------------------------------                   1209 ------------------------------
1858 G4FieldManager                                   1210 G4FieldManager
1859 - Added fFieldChangesEnergy data member and g    1211 - Added fFieldChangesEnergy data member and get/set methods
1860  ( required to allow transportation to know h    1212  ( required to allow transportation to know how to calculate end-time,
1861    enabling the integration of time only for     1213    enabling the integration of time only for electric fields. )
1862                                                  1214 
1863 Nov 28th, 2001  J. Apostolakis - field-V03-02    1215 Nov 28th, 2001  J. Apostolakis - field-V03-02-06
1864 ------------------------------                   1216 ------------------------------
1865 Small fixes only:                                1217 Small fixes only:
1866                                                  1218 
1867 G4CashKarpRKF45                                  1219 G4CashKarpRKF45
1868 - fixed deletion of unassigned pointer/array     1220 - fixed deletion of unassigned pointer/array in destructor. (-> Volodya Velev)
1869                                                  1221 
1870 G4EqMagElectricField                             1222 G4EqMagElectricField
1871 - bug fixed in the formula for inverse veloci    1223 - bug fixed in the formula for inverse velocity             (-> V. Grichine)
1872                                                  1224 
1873 Nov 21st, 2001  G. Cosmo - field-V03-02-05       1225 Nov 21st, 2001  G. Cosmo - field-V03-02-05
1874 ------------------------                         1226 ------------------------
1875 - Protected verbose warnings with G4FIELD_DEB    1227 - Protected verbose warnings with G4FIELD_DEBUG flag in G4ChordFinder.cc
1876   (V.Grichine).                                  1228   (V.Grichine).
1877 - Replaced G4DEBUG with G4DEBUG_FIELD in G4Ma    1229 - Replaced G4DEBUG with G4DEBUG_FIELD in G4MagIntegratorDriver.cc.
1878 - Updates to unit test field02.                  1230 - Updates to unit test field02.
1879                                                  1231 
1880 Nov 13th, 2001  G. Cosmo - field-V03-02-04       1232 Nov 13th, 2001  G. Cosmo - field-V03-02-04
1881 ------------------------                         1233 ------------------------
1882 - Removed warnings on gcc-2.95.2.                1234 - Removed warnings on gcc-2.95.2.
1883 - Included unit tests field01, field02, field    1235 - Included unit tests field01, field02, field03.
1884                                                  1236 
1885 Nov 9th, 2001  J. Apostolakis - field-V03-02-    1237 Nov 9th, 2001  J. Apostolakis - field-V03-02-03
1886 -----------------------------                    1238 -----------------------------
1887 Motivated by the use case of an Electric Fiel    1239 Motivated by the use case of an Electric Field,
1888  - in order to achieve reasonable accuracy in    1240  - in order to achieve reasonable accuracy in time integration,
1889  - and to enable fields that vary with the gl    1241  - and to enable fields that vary with the global time)
1890 we (John Ap. and V. Grichine) changed the fol    1242 we (John Ap. and V. Grichine) changed the following:
1891                                                  1243 
1892 - Modified G4Field to allow the time in the G << 1244 - Modified G4Field to allow the time in the GetFieldValue method 
1893      - as 4th component of the "position" arr    1245      - as 4th component of the "position" array.
1894                                                  1246 
1895 - Modified EquationOfMotion to provide the ti    1247 - Modified EquationOfMotion to provide the time to the GetFieldValue method
1896    of G4Field                                    1248    of G4Field
1897       * as the 4th component of a position /     1249       * as the 4th component of a position / time  4-array
1898       * in place of only position as a 3-arry    1250       * in place of only position as a 3-arry
1899                                                  1251 
1900 - Added the global time as variable to be int << 1252 - Added the global time as variable to be integrated over in the 
1901    case of an Electric Field                     1253    case of an Electric Field
1902                                                  1254 
1903 Support for these modifications is required i    1255 Support for these modifications is required in G4Transportation.
1904                                                  1256 
1905 (Better support will require either              1257 (Better support will require either
1906  - a modification in G4FieldTrack to indicate    1258  - a modification in G4FieldTrack to indicate whether the time has been
1907     integrated or not.                        << 1259     integrated or not.  
1908  - or additionally making the time calculatio    1260  - or additionally making the time calculation a property of G4FieldTrack,
1909     bring in code to do it in from G4Transpor    1261     bring in code to do it in from G4Transportation.)
1910                                                  1262 
1911                                                  1263 
1912 Nov  8th, 2001  J. Apostolakis - field-V03-02    1264 Nov  8th, 2001  J. Apostolakis - field-V03-02-02
1913 ------------------------                         1265 ------------------------
1914 - Introduced several changes in G4MagIntegrat    1266 - Introduced several changes in G4MagIntegratorDriver.
1915                                                  1267 
1916    It now respects its minimum driver step si    1268    It now respects its minimum driver step size in AccurateAdvance.
1917      * whereas before it did not.                1269      * whereas before it did not.
1918                                                  1270 
1919    Modified maximum number of steps, lowering    1271    Modified maximum number of steps, lowering by factor of 10.
1920      -> it should reduce the time spent integ    1272      -> it should reduce the time spent integrating low energy particles,
1921    in some cases where it is unneccessary.       1273    in some cases where it is unneccessary.
1922                                                  1274 
1923    Protected printing of (nearly?) all warnin    1275    Protected printing of (nearly?) all warnings with a G4DEBUG_FIELD  #ifdef.
1924                                                  1276 
1925                                                  1277 
1926 Nov 05th, 2001  G. Cosmo - field-V03-02-01       1278 Nov 05th, 2001  G. Cosmo - field-V03-02-01
1927 ------------------------                         1279 ------------------------
1928 - Fixed trivial warnings on Linux-g++.           1280 - Fixed trivial warnings on Linux-g++.
1929                                                  1281 
1930 Aug 27th, 2001  J. Apostolakis - field-V03-02    1282 Aug 27th, 2001  J. Apostolakis - field-V03-02-00
1931 ------------------------------                   1283 ------------------------------
1932 Tagged last change.                              1284 Tagged last change.
1933 This tag is utilised in transport-V03-02-01 (    1285 This tag is utilised in transport-V03-02-01 (which requires it).
1934                                                  1286 
1935 Aug 16th, 2001  J. Apostolakis                   1287 Aug 16th, 2001  J. Apostolakis
1936 ------------------------------                   1288 ------------------------------
1937 G4ChordFinder:                                   1289 G4ChordFinder:
1938  Added method to erase/reset the state of the    1290  Added method to erase/reset the state of the StepEstimate.
1939  This is unwanted internal state that was car    1291  This is unwanted internal state that was carried between tracks and
1940      events as a side effect.                    1292      events as a side effect.
1941                                                  1293 
1942  Calling this at the start of each track, it     1294  Calling this at the start of each track, it is now possible to
1943  eliminate a non-repeatability that was possi    1295  eliminate a non-repeatability that was possible due to this.
1944     ( It has been observed in particular in v    1296     ( It has been observed in particular in vaccuum. )
1945                                                  1297 
1946 May 23rd, 2001  J. Apostolakis - field-V03-01    1298 May 23rd, 2001  J. Apostolakis - field-V03-01-02
1947 ------------------------------                   1299 ------------------------------
1948 - Added Exception to G4RKG3Stepper constructo    1300 - Added Exception to G4RKG3Stepper constructor: the class does not work
1949                                                  1301 
1950 May 23rd, 2001  J. Apostolakis - field-V03-01    1302 May 23rd, 2001  J. Apostolakis - field-V03-01-01
1951 ------------------------------                   1303 ------------------------------
1952 - Fixed G4FieldManager constructors to give d    1304 - Fixed G4FieldManager constructors to give default values to delta
1953   parameters.                                    1305   parameters.
1954                                                  1306 
1955 - Updated testPropagateSpin (it now compiles) << 1307 - Updated testPropagateSpin (it now compiles), 
1956    and some outputs of testPropagateMagField     1308    and some outputs of testPropagateMagField (1 to 5)
1957                                                  1309 
1958                                                  1310 
1959 Apr 12th, 2001  P. Gumplinger - field-V03-01-    1311 Apr 12th, 2001  P. Gumplinger - field-V03-01-00
1960 -----------------------------                    1312 -----------------------------
1961 - Updated G4Mag_SpinEqRhs.hh and G4Mag_SpinEq    1313 - Updated G4Mag_SpinEqRhs.hh and G4Mag_SpinEqRhs.cc for correction
1962   to spin tracking.                              1314   to spin tracking.
1963                                                  1315 
1964 Apr 04th, 2001  G. Cosmo - field-V03-00-05       1316 Apr 04th, 2001  G. Cosmo - field-V03-00-05
1965 ------------------------                         1317 ------------------------
1966 - G4FieldTrack.icc: fixed pedantic warnings o    1318 - G4FieldTrack.icc: fixed pedantic warnings on Linux-g++.
1967                                                  1319 
1968 Mar 23rd, 2001  J. Apostolakis - field-V03-00    1320 Mar 23rd, 2001  J. Apostolakis - field-V03-00-04
1969 ------------------------------                   1321 ------------------------------
1970 - Electric Field unit test now works: test ru    1322 - Electric Field unit test now works: test runs until completion.
1971    Test outputs saved (on Linux).                1323    Test outputs saved (on Linux).
1972                                                  1324 
1973 - Fixed src/G4UniformElectricField.cc to set     1325 - Fixed src/G4UniformElectricField.cc to set correct field components
1974                                       (compat    1326                                       (compatible with Equation of Motion
1975                                        G4EqMa    1327                                        G4EqMagElectricField )
1976                                                  1328 
1977 - Tidied G4FieldTrack                            1329 - Tidied G4FieldTrack
1978    * deleted obsolete methods Set/Get Momentu    1330    * deleted obsolete methods Set/Get MomentumModulus() and its data member.
1979    * in constructor to set the value of the s << 1331    * in constructor to set the value of the spin to (0.0, 0.0, 0.0) 
1980           if pSpin is null.  (It was undefine    1332           if pSpin is null.  (It was undefined.)
1981                                                  1333 
1982 Mar 23rd, 2001  J. Apostolakis - field-V03-00    1334 Mar 23rd, 2001  J. Apostolakis - field-V03-00-03
1983 ------------------------------                   1335 ------------------------------
1984 - Fixed (hacked) CashKarp to work using Auxil << 1336 - Fixed (hacked) CashKarp to work using Auxiliary Stepper.   
1985                                                  1337 
1986 - Modified G4MagIntegratorStepper             << 1338 - Modified G4MagIntegratorStepper 
1987      to use pointer to G4EquationOfMotion        1339      to use pointer to G4EquationOfMotion
1988             instead of G4Mag_EqRhs               1340             instead of G4Mag_EqRhs
1989                                                  1341 
1990 - Design iteration appears neccessary            1342 - Design iteration appears neccessary
1991                                                  1343 
1992 Mar 23rd, 2001  J. Apostolakis - field-V03-00    1344 Mar 23rd, 2001  J. Apostolakis - field-V03-00-02
1993 ------------------------------                   1345 ------------------------------
1994 - Fixed G4MagHelicalStepper::AdvanceHelix for    1346 - Fixed G4MagHelicalStepper::AdvanceHelix for momentum, allowing
1995     the possibility of (correct) use of all H << 1347     the possibility of (correct) use of all Helical Steppers. 
1996                                                  1348 
1997 - test/testProElectroMagField.cc updated for     1349 - test/testProElectroMagField.cc updated for momentum.
1998     (Not yet updated: Spin tests)                1350     (Not yet updated: Spin tests)
1999                                                  1351 
2000                                                  1352 
2001 Mar 19th, 2001  J. Apostolakis - field-V03-00    1353 Mar 19th, 2001  J. Apostolakis - field-V03-00-01
2002 ------------------------------                   1354 ------------------------------
2003 - Tagging the modification of several classes    1355 - Tagging the modification of several classes to integrate in momentum*c_light
2004     instead of velocity.                      << 1356     instead of velocity.  
2005   Reason for change:  Velocity integration ca    1357   Reason for change:  Velocity integration can result in superluminar
2006     velocities,  due to arithmetic inaccuraci    1358     velocities,  due to arithmetic inaccuracies.
2007   Classes modified:                           << 1359   Classes modified: 
2008     G4FieldTrack,   (Changed components 3,4,5    1360     G4FieldTrack,   (Changed components 3,4,5 of SixVector to Momentum,
2009     G4Mag_EqRhs, G4Mag_UsualEqRhs, G4EqMagEle    1361     G4Mag_EqRhs, G4Mag_UsualEqRhs, G4EqMagElectricField
2010                                                  1362 
2011 Feb 20th, 2001  J. Apostolakis                << 1363 Feb 20th, 2001  J. Apostolakis 
2012                                                  1364 
2013 - Modified several classes to integrate in mo    1365 - Modified several classes to integrate in momentum instead of velocity.
2014                                                  1366 
2015  G4FieldTrack:                                   1367  G4FieldTrack:
2016      Changed components 3,4,5 of SixVector to    1368      Changed components 3,4,5 of SixVector to Momentum,
2017      Modified constructor                        1369      Modified constructor
2018      Added energy calculation to "LoadFromArr    1370      Added energy calculation to "LoadFromArray" method
2019      GetEnergy method is now implemented.     << 1371      GetEnergy method is now implemented. 
2020      Deleted obsolete (old) method names for     1372      Deleted obsolete (old) method names for Curve and Position. New have "Get"
2021                                                  1373 
2022  G4ChordFinder                                   1374  G4ChordFinder
2023      Renamed old-method names of Field Track  << 1375      Renamed old-method names of Field Track to new ones. 
2024                                                  1376 
2025 Jan 29th, 2001  G. Cosmo - field-V03-00-00       1377 Jan 29th, 2001  G. Cosmo - field-V03-00-00
2026 -------------------------                        1378 -------------------------
2027                                                  1379 
2028 - Minor fix to G4MagneticField.hh: added expl    1380 - Minor fix to G4MagneticField.hh: added explicit call to G4Field() in
2029   copy constructor. Fixes report #205.           1381   copy constructor. Fixes report #205.
2030                                                  1382 
2031 Nov 20th, 2000  G. Cosmo - field-V02-00-02       1383 Nov 20th, 2000  G. Cosmo - field-V02-00-02
2032                                                  1384 
2033 - Fixes to remove warnings from "-Wall -ansi     1385 - Fixes to remove warnings from "-Wall -ansi -pedantic" g++ compiler options:
2034   o commented out variables declared and not     1386   o commented out variables declared and not used.
2035   o fixed declaration of variables used befor    1387   o fixed declaration of variables used before being initialised.
2036   o fixed order of initialisation of member d    1388   o fixed order of initialisation of member data in constructors.
2037   o fixed usage of unsigned-int (size_t) for     1389   o fixed usage of unsigned-int (size_t) for array indeces.
2038                                                  1390 
2039 Nov 9th, 2000  G. Cosmo - field-V02-00-01        1391 Nov 9th, 2000  G. Cosmo - field-V02-00-01
2040                                                  1392 
2041 - G4FieldManager: added check on existence of    1393 - G4FieldManager: added check on existence of allocated fChordFinder
2042   in CreateChordFinder(G4MagneticField*) meth    1394   in CreateChordFinder(G4MagneticField*) method.
2043                                                  1395 
2044 Nov 1st, 2000  G. Cosmo - field-V02-00-00        1396 Nov 1st, 2000  G. Cosmo - field-V02-00-00
2045                                                  1397 
2046 - QA code revision and cleanup (+fixes from C    1398 - QA code revision and cleanup (+fixes from CodeWizard filtering):
2047   o Added (private) declarations of copy cons    1399   o Added (private) declarations of copy constructor and assignment operator
2048     where needed.                                1400     where needed.
2049   o Added "const" qualifier to accessor metho    1401   o Added "const" qualifier to accessor methods, wherever needed.
2050   o Added equality check on operator= where n    1402   o Added equality check on operator= where needed.
2051   o Made destructor "virtual" for classes hav    1403   o Made destructor "virtual" for classes having virtual methods,
2052     wherever missing.                            1404     wherever missing.
2053   o Changed virtual functions to non-inline w    1405   o Changed virtual functions to non-inline wherever's the case.
2054   o Changed return value to be "const" pointe    1406   o Changed return value to be "const" pointer to functions:
2055     - G4EquationOfMotion::GetFieldObj()          1407     - G4EquationOfMotion::GetFieldObj()
2056     - G4FieldManager::GetDetectorField()         1408     - G4FieldManager::GetDetectorField()
2057     - G4MagIntegratorDriver::GetStepper()        1409     - G4MagIntegratorDriver::GetStepper()
2058   o Fixed and corrected signature to G4MagInt    1410   o Fixed and corrected signature to G4MagIntegratorDriver::SetHmin().
2059   o Added "inline" qualifier to methods' decl    1411   o Added "inline" qualifier to methods' declarations.
2060   o General cosmetics                            1412   o General cosmetics
2061                                                  1413 
2062 Jun 2nd, 2000  J. Apostolakis                    1414 Jun 2nd, 2000  J. Apostolakis
2063 - G4FieldManager[.hh.icc]                        1415 - G4FieldManager[.hh.icc]
2064   o Added DeltaIntersection and DeltaOneStep     1416   o Added DeltaIntersection and DeltaOneStep to FieldManager: added
2065     Get/Set methods and SetAccuraciesWithDelt    1417     Get/Set methods and SetAccuraciesWithDeltaOneStep().
2066                                                  1418 
2067 May 31st, 2000  J. Apostolakis - field-V01-01    1419 May 31st, 2000  J. Apostolakis - field-V01-01-03
2068                                                  1420 
2069 include/G4FieldManager.hh,icc                    1421 include/G4FieldManager.hh,icc
2070   o Moved Delta Intersection and Delta One St    1422   o Moved Delta Intersection and Delta One Step to FieldManager
2071      (from Propagator in Field),  to allow th    1423      (from Propagator in Field),  to allow them to differ over the detector.
2072                                                  1424 
2073 May 11th, 2000  J. Apostolakis - field-V01-01    1425 May 11th, 2000  J. Apostolakis - field-V01-01-02
2074                                                  1426 
2075 - G4ChordFinder[.hh.cc]                          1427 - G4ChordFinder[.hh.cc]
2076   o Modified method for finding new trial ste    1428   o Modified method for finding new trial step.
2077     New method assumes a quadratic relationsh    1429     New method assumes a quadratic relationship between step-length and d_chord:
2078             d_chord  proportional  to  step-l    1430             d_chord  proportional  to  step-lenght ^ 2
2079   o Added two small refinement in order to av    1431   o Added two small refinement in order to avoid unneccesary extra step due to
2080     small numerical inaccuracies in estimatio    1432     small numerical inaccuracies in estimation:
2081       FindNextChord                              1433       FindNextChord
2082           to first step       use  (1-0.001)     1434           to first step       use  (1-0.001) * last-step-estimate
2083       New Step:                                  1435       New Step:
2084           to subsequent step  use    trial_st    1436           to subsequent step  use    trial_step = 0.98 * estimate
2085                                                  1437 
2086 May 10th, 2000  G. Cosmo                         1438 May 10th, 2000  G. Cosmo
2087                                                  1439 
2088 - G4MagneticField.hh: minor fix to dummy impl    1440 - G4MagneticField.hh: minor fix to dummy implementation of assignment
2089   operator.                                      1441   operator.
2090                                                  1442 
2091 May    9th, 2000   J. Apostolakis - field-V01    1443 May    9th, 2000   J. Apostolakis - field-V01-01-01
2092                                                  1444 
2093 - G4MagErrorStepper:                          << 1445 - G4MagErrorStepper: 
2094     Modified DistChord to check whether the c    1446     Modified DistChord to check whether the chord endpoint are the same point.
2095                                                  1447 
2096 - G4RKG3_Stepper:                                1448 - G4RKG3_Stepper:
2097     Deleted error message from StepNoErr, as     1449     Deleted error message from StepNoErr, as it is used in Stepper.
2098                                                  1450 
2099 - G4MagIntegratorDriver:                         1451 - G4MagIntegratorDriver:
2100     Changed the condition for the debug outpu    1452     Changed the condition for the debug output  (~cosmetic)
2101                                                  1453 
2102                                                  1454 
2103 April 27th, 2000   G. Cosmo                      1455 April 27th, 2000   G. Cosmo
2104                                                  1456 
2105 - Reorganised comments for the Software Refer    1457 - Reorganised comments for the Software Reference Manual.
2106 - Moved inlined definition to .icc files, whe    1458 - Moved inlined definition to .icc files, where needed.
2107   Created: G4ChordFinder.icc and G4FieldManag    1459   Created: G4ChordFinder.icc and G4FieldManager.icc.
2108                                                  1460 
2109 April 13th, 2000   J. Apostolakis - field-V01    1461 April 13th, 2000   J. Apostolakis - field-V01-01-00
2110                                                  1462 
2111 - Modified signature to function DumbStepper(    1463 - Modified signature to function DumbStepper() in classes:
2112   G4HelixExplicitEuler, G4HelixHeum, G4HelixI    1464   G4HelixExplicitEuler, G4HelixHeum, G4HelixImplicitEuler,
2113   G4HelixSimpleRunge and G4MagHelicalStepper.    1465   G4HelixSimpleRunge and G4MagHelicalStepper.
2114 - Modified signature and implementation of fu    1466 - Modified signature and implementation of function MagFieldEvaluate()
2115   in G4MagHelicalStepper, to use Field (as Th    1467   in G4MagHelicalStepper, to use Field (as ThreeVector) in place of dydx.
2116 - Made Richardson extrapolation optional (it     1468 - Made Richardson extrapolation optional (it is unclear if
2117   it offers benefit) in G4MagHelicalStepper.     1469   it offers benefit) in G4MagHelicalStepper.
2118 - Updated unit test testPropagateMagField and    1470 - Updated unit test testPropagateMagField and reference output.
2119 - G4LineSection: fixes to prevent divisions b    1471 - G4LineSection: fixes to prevent divisions by 0. and sqrt(<0)
2120   (V.Grichine).                                  1472   (V.Grichine).
2121                                                  1473 
2122 January  19th, 2000   G. Cosmo - field-V01-00    1474 January  19th, 2000   G. Cosmo - field-V01-00-00
2123                                                  1475 
2124 Syncronized versioning of files with HEAD aft    1476 Syncronized versioning of files with HEAD after ISO-C++ migration
2125 (essentially CVS header changes).                1477 (essentially CVS header changes).
2126                                                  1478 
2127 December  7th, 1999   J. Apostolakis - field-    1479 December  7th, 1999   J. Apostolakis - field-V00-01-01a
2128                                                  1480 
2129 For negative or very small curve lengths (h)     1481 For negative or very small curve lengths (h) we suppress writing an error
2130 (about the distance of endpoints being furthe    1482 (about the distance of endpoints being further than the curve length),
2131 as it is meaningless.                            1483 as it is meaningless.
2132                                                  1484 
2133 November 23rd, 1999   J. Apostolakis - field-    1485 November 23rd, 1999   J. Apostolakis - field-V00-01-01
2134                                                  1486 
2135 Tagged this sub-category's state in geometry-    1487 Tagged this sub-category's state in geometry-V00-01-01
2136                                                  1488 
2137                                                  1489 
2138 July      6th, 1999   J. Apostolakis - field-    1490 July      6th, 1999   J. Apostolakis - field-01-00-07
2139                                                  1491 
2140 These fixes and those in field-01-00-06 and f    1492 These fixes and those in field-01-00-06 and field-01-00-06a all come
2141 from the need to cope with the imprecision of    1493 from the need to cope with the imprecision of the integration, and its
2142 interaction with paths that are rather straig << 1494 interaction with paths that are rather straight. 
2143                                                  1495 
2144 G4MagIntegrationDriver:                       << 1496 G4MagIntegrationDriver: 
2145  i) AccurateAdvance now that the chord distan    1497  i) AccurateAdvance now that the chord distance is smaller than the curve len-
2146 gth (times 1+epsilon).                           1498 gth (times 1+epsilon).
2147                                                  1499 
2148 ii) OneGoodStep and QuickAdvance considers th    1500 ii) OneGoodStep and QuickAdvance considers the error of the velocity as well as
2149 the error of the position - and ensure that b    1501 the error of the position - and ensure that both relative errors are within
2150 the "eps" maximum given.                         1502 the "eps" maximum given.
2151                                                  1503 
2152 G4ChordFinder:                                   1504 G4ChordFinder:
2153   Having found that the curve_length vs ABdis    1505   Having found that the curve_length vs ABdist disrepancy has its basis in
2154 the imprecision of the integration:              1506 the imprecision of the integration:
2155   i) Modified the exception in this case to h    1507   i) Modified the exception in this case to happen only for very large
2156    relative disrepancies ( 10 * eps ).           1508    relative disrepancies ( 10 * eps ).
2157  ii) Undertaken a default corrective action i    1509  ii) Undertaken a default corrective action in all other cases
2158 Note that this disrepancy only happens for ve    1510 Note that this disrepancy only happens for very straight sections of track -
2159 ie step lengths much smaller than the curvatu    1511 ie step lengths much smaller than the curvature of the track.
2160                                                  1512 
2161 July      1st, 1999   J. Apostolakis - field-    1513 July      1st, 1999   J. Apostolakis - field-01-00-06a
2162                                                  1514 
2163 In order to cope with the anomalous condition    1515 In order to cope with the anomalous condition created by candidate fix
2164 in G4PropagatorInField,  we ensure that the f    1516 in G4PropagatorInField,  we ensure that the fraction_AE is always between
2165 0 and 1.0.  (giving it a default value of 0.5    1517 0 and 1.0.  (giving it a default value of 0.5 whenever it is wrong).
2166 ( in G4ChordFinder::ApproxCurvePointV )          1518 ( in G4ChordFinder::ApproxCurvePointV )
2167                                                  1519 
2168 June     29th, 1999   J. Apostolakis - field-    1520 June     29th, 1999   J. Apostolakis - field-01-00-06
2169                                                  1521 
2170   I re-instated a check on whether the input     1522   I re-instated a check on whether the input distance along the curve between
2171 the two input curve points is truly greater t    1523 the two input curve points is truly greater than their linear distance.
2172 ( in G4ChordFinder::ApproxCurvePointV )          1524 ( in G4ChordFinder::ApproxCurvePointV )
2173                                                  1525 
2174 The condition that prints out a warning messa    1526 The condition that prints out a warning message has been altered to
2175 take into account the case of a very small fi << 1527 take into account the case of a very small final interval. 
2176 ( in G4MagInt_Driver::AccurateAdvance )          1528 ( in G4MagInt_Driver::AccurateAdvance )
2177                                                  1529 
2178 June     ??th, 1999   J. Apostolakis - field-    1530 June     ??th, 1999   J. Apostolakis - field-01-00-05
2179                                                  1531 
2180 The condition that prints out a warning messa << 1532 The condition that prints out a warning message was changed to delete 
2181 an incorrect comparison.                      << 1533 an incorrect comparison. 
2182 ( in G4MagInt_Driver::AccurateAdvance )          1534 ( in G4MagInt_Driver::AccurateAdvance )
2183                                                  1535 
2184 April    19th, 1999   J. Apostolakis - field-    1536 April    19th, 1999   J. Apostolakis - field-01-00-04
2185                                                  1537 
2186 G4MagErrorStepper: Cosmetic changes to name o    1538 G4MagErrorStepper: Cosmetic changes to name of data members
2187                                                  1539 
2188 March     4th, 1999   J. Apostolakis - field-    1540 March     4th, 1999   J. Apostolakis - field-01-00-03
2189                                                  1541 
2190 Corrected delete statement of arrays to use '    1542 Corrected delete statement of arrays to use 'delete[]' instead of simple delete
2191 in destructors of 2 steppers (G4CashKarpRKF45    1543 in destructors of 2 steppers (G4CashKarpRKF45, G4SimpleHeum)
2192                                                  1544 
2193 February 17th, 1999   J. Apostolakis -  field    1545 February 17th, 1999   J. Apostolakis -  field-01-00-02
2194                                                  1546 
2195  Moved G4PropagatorInField files to geometry/ << 1547  Moved G4PropagatorInField files to geometry/volumes. 
2196  Updated GNUmakefile not to depend on geometr    1548  Updated GNUmakefile not to depend on geometry/volumes anymore.
2197    -> the known circular dependency is remove    1549    -> the known circular dependency is removed
2198                                                  1550 
2199                                                  1551 
2200 February 12th, 1999   J. Apostolakis -  field    1552 February 12th, 1999   J. Apostolakis -  field-spin1-works1     (act Feb17)
2201                                                  1553 
2202   A tag that contains the first version that     1554   A tag that contains the first version that worked with spin (in Peter G.'s
2203 directory).   G4PropagateInSpin is still in t    1555 directory).   G4PropagateInSpin is still in this version.  A small change
2204 in a branch of the header file was needed.    << 1556 in a branch of the header file was needed. 
2205                                                  1557 
2206                                                  1558 
2207 February 10th, 1999   J. Apostolakis          << 1559 February 10th, 1999   J. Apostolakis 
2208                                                  1560 
2209 All the following changes are needed for ener    1561 All the following changes are needed for energy integration also:
2210                                                  1562 
2211 G4ChordFinder now passes to the constructed d    1563 G4ChordFinder now passes to the constructed driver the number of variables.
2212 Because of the need for the stepper to know a    1564 Because of the need for the stepper to know about it in its Abstract interface
2213                                                  1565 
2214 -> Moved theNumberOfVariables  from derived c    1566 -> Moved theNumberOfVariables  from derived class G4MagErrorStepper
2215                                to base class     1567                                to base class G4MagIntegratorStepper
2216                                                  1568 
2217 As a consequense the classes that derived fro    1569 As a consequense the classes that derived from G4MagIntegratorStepper directly
2218 were changed: G4CashKarpRKF45, G4MagHelicalSt << 1570 were changed: G4CashKarpRKF45, G4MagHelicalStepper, 
2219                                                  1571 
2220                                                  1572 
2221 February  9th, 1999    J. Apostolakis            1573 February  9th, 1999    J. Apostolakis
2222                                                  1574 
2223 Equation of Motion:                              1575 Equation of Motion:
2224 G4MagEqRhs.hh  Made SetChargeMomentumMass vir    1576 G4MagEqRhs.hh  Made SetChargeMomentumMass virtual, so that G4Mag_SpinEqRhs
2225                  can initialise its constants << 1577                  can initialise its constants too. 
2226                                                  1578 
2227                                                  1579 
2228 February  9th, 1999   P. Gumplinger              1580 February  9th, 1999   P. Gumplinger
2229                                                  1581 
2230 Added Equation of Motion for Spin in Magnetic    1582 Added Equation of Motion for Spin in Magnetic Field.
2231                                                  1583 
2232                                                  1584 
2233 February 17th, 1999   J. Apostolakis  -  fiel    1585 February 17th, 1999   J. Apostolakis  -  field-01-00-01
2234   --->  date is correct, made sure that tag d    1586   --->  date is correct, made sure that tag does not include above fixes!
2235                                               << 1587   
2236  Moved G4PropagatorInField files to geometry/ << 1588  Moved G4PropagatorInField files to geometry/volumes. 
2237  Updated GNUmakefile not to depend on geometr    1589  Updated GNUmakefile not to depend on geometry/volumes anymore.
2238    -> the known circular dependency is remove    1590    -> the known circular dependency is removed
2239                                                  1591 
2240                                                  1592 
2241 ---------------------------------------------    1593 ---------------------------------------------------------------------------
2242     ------    Geant 4  Production Release   -    1594     ------    Geant 4  Production Release   ------------
2243 ---------------------------------------------    1595 --------------------------------------------------------------------------
2244 Nov   19th, 1998   J. Apostolakis  -  field-0    1596 Nov   19th, 1998   J. Apostolakis  -  field-00-04-01head ===> R+D version only
2245                                                  1597 
2246  G4PropagatorInField files modified:             1598  G4PropagatorInField files modified:
2247                                                  1599 
2248    - to store the last safety computed and it    1600    - to store the last safety computed and its origin.
2249    - to give them to a requester                 1601    - to give them to a requester
2250 ---------------------------------------------    1602 ------------------------------------------------------------------
2251                                                  1603 
2252 Nov   19th, 1998   J. Apostolakis  -  field-0    1604 Nov   19th, 1998   J. Apostolakis  -  field-00-03-03b
2253                                                  1605 
2254  Subtle fix to interface of G4UniformMagField << 1606  Subtle fix to interface of G4UniformMagField::GetFieldValue  
2255          ( that tripped Visual C++ )             1607          ( that tripped Visual C++ )
2256                                                  1608 
2257  G4PropagatorInField:  added printing method     1609  G4PropagatorInField:  added printing method for verboseness.
2258                                                  1610 
2259 Nov   19th, 1998   J. Apostolakis  -  field-0    1611 Nov   19th, 1998   J. Apostolakis  -  field-00-03-03a
2260                                                  1612 
2261    Steppers:  Fixed instance variables constr    1613    Steppers:  Fixed instance variables construction (SimpleRunge)
2262               and clash of names in CashKarp:    1614               and clash of names in CashKarp::StepWithEstimate
2263                                                  1615 
2264    Added post-const to all Field classes for     1616    Added post-const to all Field classes for
2265            void GetFieldValue(const G4double     1617            void GetFieldValue(const G4double yTrack[] ,
2266                                  G4double B[]    1618                                  G4double B[]      ) const ;
2267                                                  1619 
2268    Added SetFieldValue methods to UniformMagF    1620    Added SetFieldValue methods to UniformMagField
2269                                                  1621 
2270    Added GetConstantFieldValue() methods to U    1622    Added GetConstantFieldValue() methods to Uniform Mag & Electric Fields
2271                                                  1623 
2272                                                  1624 
2273 Nov   19th, 1998   J. Apostolakis  -  field-0    1625 Nov   19th, 1998   J. Apostolakis  -  field-00-03-03
2274                                                  1626 
2275    Fixes to Propagate and Steppers               1627    Fixes to Propagate and Steppers
2276                                                  1628 
2277 Nov   19th, 1998   J. Apostolakis  -  field-0    1629 Nov   19th, 1998   J. Apostolakis  -  field-00-03-02
2278                                                  1630 
2279    Minor corrections  (???)                      1631    Minor corrections  (???)
2280                                                  1632 
2281 Nov   19th, 1998   J. Apostolakis  -  field-0    1633 Nov   19th, 1998   J. Apostolakis  -  field-00-03-02
2282                                               << 1634  
2283    Major development to allow Electric Field     1635    Major development to allow Electric Field
2284                                               << 1636    
2285                                                  1637 
2286                                                  1638 
2287 June  17th, 1998   J. Apostolakis  -  magfiel    1639 June  17th, 1998   J. Apostolakis  -  magfield-06-03
2288                                                  1640 
2289  Modified Files:                                 1641  Modified Files:
2290         include/G4PropagatorInField.hh           1642         include/G4PropagatorInField.hh
2291             src/G4PropagatorInField.cc           1643             src/G4PropagatorInField.cc
2292            test/testPropagateInField.cc          1644            test/testPropagateInField.cc
2293 ---------------------------------------------    1645 ----------------------------------------------------------------------
2294                                                  1646 
2295  1)  Added an assertion after each call to Lo << 1647  1)  Added an assertion after each call to LocateGlobalPointAndSetup. 
2296      It checks that the located volume is equ    1648      It checks that the located volume is equal to the current volume.
2297      If this check fails, the Propagator does    1649      If this check fails, the Propagator does not know how to continue.
2298                                                  1650 
2299  2)  Added an argument  to ComputeStep method    1651  2)  Added an argument  to ComputeStep method of G4PropagatorInField.
2300   The new volume argument is used to check th    1652   The new volume argument is used to check the current volume during the step.
2301                                                  1653 
2302  3)  When G4Navigator's ComputeStep returned     1654  3)  When G4Navigator's ComputeStep returned  stepLength==stepRequested,  this
2303 used to be treated as a failure to intersect.    1655 used to be treated as a failure to intersect.  This is incorrect.
2304                                                  1656 
2305     stepLength==stepRequested is an intersect    1657     stepLength==stepRequested is an intersection,
2306       so I am now treating it as such in each    1658       so I am now treating it as such in each comparison (of 3).
2307       Ignoring it causes problems, including     1659       Ignoring it causes problems, including volume being skipped.
2308       --> but treating it as an intersection     1660       --> but treating it as an intersection used to cause problems too ??
2309                                                  1661 
2310                                                  1662 
2311 May    7th, 1998    J. Apostolakis  -  magfie    1663 May    7th, 1998    J. Apostolakis  -  magfield-06-02-helix01
2312                                                  1664 
2313 - Tag includes new version of G4ChordFinder (    1665 - Tag includes new version of G4ChordFinder (not used by W.Wander).
2314                                                  1666 
2315                                                  1667 
2316 May    7th, 1998    W. Wander     (recorded/c    1668 May    7th, 1998    W. Wander     (recorded/commited by  J. Apostolakis)
2317                                                  1669 
2318 - New "helical" RK steppers that move in heli    1670 - New "helical" RK steppers that move in helical segments, not linear.
2319     * Several changes to add steppers         << 1671     * Several changes to add steppers 
2320                                                  1672 
2321  Modified Files:                                 1673  Modified Files:
2322         G4MagErrorStepper.hh                  << 1674         G4MagErrorStepper.hh 
2323         G4MagErrorStepper.cc                  << 1675         G4MagErrorStepper.cc 
2324            added Helical stepping methods to     1676            added Helical stepping methods to this general ABC.
2325                                               << 1677         
2326         G4MagIntegratorStepper.hh                1678         G4MagIntegratorStepper.hh
2327            made RightHandSide virtual   (this    1679            made RightHandSide virtual   (this will be reversed very soon)
2328                                                  1680 
2329         testPropagateMagField.cc                 1681         testPropagateMagField.cc
2330            Test of Helical stepping functiona    1682            Test of Helical stepping functionality added.
2331                                               << 1683            
2332  Added Files for new Helical RK steppers, der    1684  Added Files for new Helical RK steppers, deriving from G4MagErrorStepper:
2333         G4HelixExplicitEuler.cc  ( and .hh )     1685         G4HelixExplicitEuler.cc  ( and .hh )
2334         G4HelixHeum.cc                           1686         G4HelixHeum.cc
2335         G4HelixImplicitEuler.cc                  1687         G4HelixImplicitEuler.cc
2336         G4HelixSimpleRunge.cc                 << 1688         G4HelixSimpleRunge.cc  
2337                                                  1689 
2338  Added File for implementation:                  1690  Added File for implementation:
2339         G4MagErrorStepper.icc                    1691         G4MagErrorStepper.icc
2340                                                  1692 
2341                                                  1693 
2342 May    7th, 1998    J. Apostolakis   -  magfi    1694 May    7th, 1998    J. Apostolakis   -  magfield-06-01
2343                                                  1695 
2344 - added small changes to                      << 1696 - added small changes to 
2345     * G4ChordFinder:           methods to get    1697     * G4ChordFinder:           methods to get/set IntegratorDriver
2346     * G4MagIntegratorDriver:   made OneGoodSt    1698     * G4MagIntegratorDriver:   made OneGoodStep method public
2347 - created the file.                              1699 - created the file.
                                                   >> 1700