Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/geometry/magneticfield/History

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Diff markup

Differences between /geometry/magneticfield/History (Version 11.3.0) and /geometry/magneticfield/History (Version 9.2.p1)

  1 # Category field History                       <<   1 $Id: History,v 1.136 2008/12/11 10:47:59 gcosmo Exp $
                                                   >>   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                                                << 
391 June 12, 2018 G.Cosmo                   - fiel << 
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 ---------------------------------------        << 
566 - G4NystromRK4: use consistenly G4 types for d << 
567                                                << 
568 Aug 31, 2017 J. Apostolakis             - fiel << 
569 ---------------------------------------        << 
570 - Made G4DormandPrince457 the default Stepper  << 
571   G4ChordFinder - when a driver/stepper is not << 
572                                                << 
573 Aug 31, 2017 J. Apostolakis             - fiel << 
574 ---------------------------------------        << 
575 - G4NystromRK4: used caching of momentum magni << 
576   to reduce overhead of fix in field-V10-03-10 << 
577                                                << 
578 Aug 25, 2017 J. Apostolakis             - fiel << 
579 ---------------------------------------        << 
580 - G4MagInt_Driver: added GetEquationOfMotion m << 
581   code with future develoment.                 << 
582                                                << 
583 Aug 24, 2017 D.Sorokin & J. Apostolakis - fiel << 
584 ---------------------------------------        << 
585 - G4NystromRK4: correction in call to getField << 
586     ( Spotted by D. Sorokin )                  << 
587   Also small cleanup of testing code into 2 sm << 
588     ( J. Apostolakis )                         << 
589                                                << 
590 Aug 23, 2017 J.Apostolakis              - fiel << 
591 --------------------------                     << 
592 - G4NystromRK4 - Fix the caching of momentum,  << 
593   Fixes issue reported by ALICE ( problem repo << 
594   Thanks to Ruben Shahoyan for identifying and << 
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                                                << 
690 Oct   7, 2016 J.Apostolakis             - fiel << 
691 ---------------------------                    << 
692 - Checked loops for termination for infinite l << 
693    them with "Loop checking" comment           << 
694                                                << 
695 Oct   7, 2016 D.Sorokin                 - fiel << 
696 -----------------------  Commit: J. Apostolaki << 
697 - Protection for multiple inclusion of G4Class << 
698    (thanks to Dmitrii Sorokin, GSoC 2016 stude << 
699                                                << 
700 Aug  16, 2016 J.Apostolakis             - fiel << 
701 ---------------------------                    << 
702 - Added initialization of fAuxStepper in const << 
703   G4DoLoMcPriRK34, G4DormandPrince745 & G4Dorm << 
704                                                << 
705 June 11, 2016 J.Apostolakis             - fiel << 
706 ---------------------------                    << 
707 - Restored G4ClassicalRK4 as default stepper f << 
708   (due to performance issues reported in bench << 
709                                                << 
710 June 10, 2016 G.Cosmo                   - fiel << 
711 ---------------------                          << 
712 - Fixed code indentation in G4HelixMixedSteppe << 
713   fixes compilation warnings on gcc-6.1.       << 
714                                                << 
715 June 1, 2016 J.Apostolakis              - fiel << 
716 --------------------------                     << 
717 - Fix in multiple steppers for the size of two << 
718   intermediate values;  they must be at least  << 
719   'fNumberOfStateVariables' long.              << 
720   Changed: G4CashKarp,                         << 
721            G4BogackiShampine 23 & 34           << 
722            G4DormandPrince 745, RK56 & RK78    << 
723      G4DoLoMcPriRK34                           << 
724            G4FSALBogackiShampine45, G4FSALDorm << 
725 - Made G4CashKarp the default stepper in G4Cho << 
726 - Deleted trial class G4NewChordFinder.        << 
727                                                << 
728 June 1, 2016 J.Apostolakis              - fiel << 
729 --------------------------                     << 
730 - Deleted test code (RkTestRun) due to cmake i << 
731                                                << 
732 June 1, 2016 J.Apostolakis              - fiel << 
733 --------------------------                     << 
734 - Made G4ClassicalRK4 the default stepper agai << 
735 - Fixes in test code (RkTestRun) for new names << 
736                                                << 
737 May 31, 2016 J.Apostolakis              - fiel << 
738 --------------------------                     << 
739 - New class G4NewChordFinder, that uses old G4 << 
740     the newer G4FSALIntegratorDriver -- first  << 
741   Created new test testNewChordFinder.cc to ch << 
742                                                << 
743 - Renamed new Stepper classes to use 'G4' pref << 
744     DormandPrince{745,RK56,RK67} TsitourasRK45 << 
745                                                << 
746 - Renamed FSAL base classes to use 'G4' prefix << 
747      FSALMagIntegratorStepper to G4VFSALIntegr << 
748      FSALIntegratorDriver     to  G4FSALIntegr << 
749   and the experimental FSAL versions of steppe << 
750      FBogackiShampine45.hh  to  G4FSALBogackiS << 
751      FDormandPrince745.hh   to  G4FSALDormandP << 
752 ( Note: FSAL steppers remain 'behind' the impr << 
753                                                << 
754 - Made DormandPrince745 (DP45) the default ste << 
755                                                << 
756 May 26, 2016 J.Apostolakis & Som. Banerjee   - << 
757 ------------------------------------------     << 
758 - First version of FSAL classes (as additional << 
759     FSAL Integrator Driver  : New *concrete*,  << 
760     FSAL Integrator Stepper : New base class ( << 
761     FBogackiShampine45:  FSAL-version of Bogac << 
762     FDormandPrince745:   FSAL-version of FDorm << 
763   Developed by Somnath Banerjee in GSoC 2015   << 
764                                                << 
765 Context:                                       << 
766 * FSAL Stepper's key 'Stepper()' method for St << 
767     argument to return the derivative at the e << 
768     If the step was successful, this estimate  << 
769     accuracy as the stepper (i.e. 5th order fo << 
770                                                << 
771 - FSAL Driver method uses the revised Stepper  << 
772     the final (endpoint) derivative for succes << 
773     as the start derivative for the next step, << 
774     continuing of integration.                 << 
775                                                << 
776 - New test (RkTestRun.cc) covering FSAL method << 
777    Developed by Somnath Banerjee in GSoC 2015  << 
778                                                << 
779 May 26, 2016 J.Apostolakis                   - << 
780 --------------------------                     << 
781 Preparation for addition of FSAL steppers (& d << 
782 - G4MagIntegratorStepper: Added counter for ca << 
783     with Get/Reset methods.                    << 
784 - Cosmetic fixes in sources.cmake (tabs to spa << 
785                                                << 
786 May 25, 2016 J.Apostolakis & Som. Banerjee   - << 
787 ------------------------------------------     << 
788 - Added new stepper classes embedded RK method << 
789   * DoLoMcPriRK34,      6-stage 3/4 RK (interp << 
790   * DormandPrinceRK56,  9-stage 5/6 RK (interp << 
791   * DormandPrinceRK78, 13-stage 7/8 RK (interp << 
792   created by Somnath Banerjee as part of GSoC  << 
793                                                << 
794 May 25, 2016 J.Apostolakis             - field << 
795 --------------------------                     << 
796 - Revised testPropagateMagField, to reduce err << 
797     steps.  An error message is still written  << 
798     but test does not stop.                    << 
799                                                << 
800 - G4HelixMixedStepper: Fixes & added new (5th  << 
801     Included (G4)Bogacki-Shampine 23/45 ,  Dor << 
802     and newest TsitourasRK45.                  << 
803                                                << 
804 May 24, 2016 J.Apostolakis             - field << 
805 --------------------------                     << 
806 - Added TsitourasRK45 stepper.                 << 
807 - Made Cash-Karp the default stepper (in G4Cho << 
808                                                << 
809 May 23, 2016 J.Apostolakis             - field << 
810 --------------------------                     << 
811 - Made DormandPrince745 (DP45) the default ste << 
812                                                << 
813 May 20, 2016 J.Apostolakis             - field << 
814 -------------------------                      << 
815 - Added steppers created by Somnath Banerjee a << 
816     G4BogackiShampine23 (BS23 below), G4Bogack << 
817     DormandPrince745 (DP45).                   << 
818   These implement third order (BS23) and fifth << 
819     embedded RK tableaus.                      << 
820 - DP45 includes interpolation method, to evalu << 
821     ('y') at intermediate points of a successf << 
822   BS45's interpolation method exists, but is n << 
823                                                << 
824  References:                                   << 
825   - BS45 is embedded pair from paper by P. Bog << 
826       “An efficient Runge-Kutta (4,5) pair,â << 
827       Comput. Math. with Appl., vol. 32, no. 6 << 
828   - BS23 is four stage RK method from the pape << 
829       “A 3(2) pair of Runge - Kutta formulas << 
830       Appl. Math. Lett., vol 2, no 4, p.321 (1 << 
831   - DP45 are from Table 2 of  J. R. Dormand an << 
832       “A family of embedded Runge-Kutta form << 
833       Journal of comput. and applied Math., vo << 
834                                                << 
835 May 4, 2016 G.Cosmo                   - field- << 
836 -------------------                            << 
837 - Fixed Clone() signatures in derived Field cl << 
838   More corrections on implementations of opera << 
839                                                << 
840 Apr 29, 2016 G.Cosmo                  - field- << 
841 --------------------                           << 
842 - Corrected implementation of operator=() and  << 
843   G4ElectroMagneticField, G4ElectricField and  << 
844                                                << 
845 Feb 25, 2016 P.Gumplinger             - field- << 
846 -------------------------                      << 
847 - address Problem Report: 1831                 << 
848   change: G4Mag_SpinEqRhs, G4EqEMFieldWithSpin << 
849           G4RepleteEofM.cc from g_BMT = (magMo << 
850                            to   g_BMT = (std:: << 
851                                                << 
852                                                << 
853 Dec 11, 2015 A.Dotti          - field-V10-02-0 << 
854 --------------------------                     << 
855 Fixing typo in tests/CMakeList.txt file: subdi << 
856 instead of add_subdirectory()                  << 
857                                                << 
858 Nov  2, 2015 J.Apostolakis             - field << 
859 Oct 22, 2015 J.Apostolakis             - field << 
860 --------------------------                     << 
861 - Reverted changes in G4FieldManager from  tag << 
862    inadvertently reintroduced in tag field-V10 << 
863     (fixed in tag -15: committed new copy from << 
864                                                << 
865 - Added explanation comment in G4MagHelicalSte << 
866                                                << 
867 Oct 13, 2015 J.Apostolakis             - field << 
868 --------------------------                     << 
869 - G4ChordFinder::FindNextChord: Added check ag << 
870   to identify potential issue of lack of conve << 
871 - test: fixed testProElectricMagField.cc       << 
872                                                << 
873 - Note: tag-13 inadvertently reintroduced chan << 
874                                                << 
875 Jun 26, 2015 P.Gumplinger              - field << 
876 -------------------------                      << 
877 - Include 'NumberOfVariables' in G4RepleteEofM << 
878                                                << 
879 Jun 22, 2015 G.Cosmo                   - field << 
880 --------------------                           << 
881 - Withdrawn also changes introduced in tag "fi << 
882   responsible for memory violation errors in V << 
883   Now corresponding to tag "field-V10-01-04".  << 
884                                                << 
885 Jun 18, 2015 G.Cosmo                   - field << 
886 --------------------                           << 
887 - Withdrawn changes introduced from tag "field << 
888   "field-V10-01-07" included, responsible for  << 
889   run-time errors on Valgrind checks.          << 
890                                                << 
891 Jun 10, 2015 P.Gumplinger              - field << 
892 -------------------------                      << 
893 - initialize all elements of dydx[] in G4Reple << 
894   Thanks to Tatsuya Kikawa (Osaka Univ.)       << 
895                                                << 
896 Jun 10, 2015 J.Apostolakis             - field << 
897 --------------------------                     << 
898 - G4FieldManager.cc : Made behaviour of SetDet << 
899    longer complains by default if ChordFinder  << 
900     ( The default values of failMode = 0 i.e.  << 
901    If a chord-finder exists, it will still war << 
902                                                << 
903    It is still possible to have louder/extra c << 
904      SetDetectorField with failMode > 0        << 
905    or by using a new method, which expects an  << 
906      ChangeDetectorField(G4Field *detectorFiel << 
907                                                << 
908 Jun  8, 2015 J.Apostolakis             - field << 
909 --------------------------                     << 
910 - G4FieldManager.cc : Revised behaviour of Set << 
911    passes the Field to the Equation, as is the << 
912    The previous behaviour is possible, using e << 
913       flag. Values: 0           = silent ;     << 
914                     1 (default) = warning;     << 
915                     2 or other  = fatal except << 
916    Or can use alternative (new) suggestion met << 
917                                                << 
918    This change is to ensure that user expectat << 
919       if the field is changed for an existing, << 
920       be propagated to the equation of motion. << 
921    Note: this causes potential conflict betwee << 
922          and the field, which will need to be  << 
923                                                << 
924    Old behaviour (just set our own pointer) is << 
925      ProposeDetectorField(G4Field *detectorFie << 
926                                                << 
927    Co-works and requires new tag in geometry/n << 
928                                                << 
929 Jun 4, 2015 P. Gumplinger              - field << 
930 -------------------------                      << 
931 - change assignment to field instead of Field  << 
932                                                << 
933 Jan 28, 2015 J.Apostolakis             - field << 
934 --------------------------                     << 
935 - Revert unintended inclusion of changes in G4 << 
936                                                << 
937 Jan 15, 2015 J.Apostolakis             - field << 
938 --------------------------                     << 
939 - Small refinements in G4FieldTrack - access r << 
940     Avoid division by zero for Unit direction  << 
941     Added method to get Rest Mass.             << 
942   Needed for fixes related to Problem report 1 << 
943   Thanks to Nathan S. Froemming <nfroemm@uw.ed << 
944    and created dedicated test to demonstrate i << 
945                                                << 
946 Nov 03, 2014 G.Cosmo                   - field << 
947 --------------------                           << 
948 - Moved constructors and simple methods to in  << 
949   G4LineSection for CPU speedup (courtesy of S << 
950                                                << 
951 May 21, 2014 J.Apostolakis             - field << 
952 --------------------------                     << 
953 - G4FieldTrack:                                << 
954   * Fixed SetChargeAndMoments() to use the new << 
955     G4ChargeState::SetChargesAndMoments(); it  << 
956     erroneous change in G4ChargeState::SetChar << 
957     is now renamed SetChargeSpinMoments() to s << 
958   * Added pdg-spin as argument to constructors << 
959   * Renamed 'spin' to 'Polarization' in method << 
960     avoid confusion;                           << 
961   * Revised constructors to add pdg-spin as la << 
962 - G4ChargeState:                               << 
963   - Addressed Coverity issue #56281 'Arguments << 
964     G4ChargeState::SetChargeMoments() when use << 
965     G4FieldTrack::SetChargeMoments() from addi << 
966     without revising name of method to reflect << 
967   - Changed order of arguments in constructor, << 
968     (was 2nd) and making all arguments mandato << 
969   - Renamed SetChargeAndMoments() method with  << 
970     to SetChargeSpinMoments();                 << 
971   - Added new methods including SetChargesAndM << 
972     SetChargeDipoleMoments() (no spin), and al << 
973     SetChargeMdmSpin() (which includes spin) t << 
974     combinations.                              << 
975 - G4MagIntegratorDriver::OneGoodStep():        << 
976   * Trial changes to address Valgrind issue, a << 
977                                                << 
978 Apr 01, 2014 J.Apostolakis                - fi << 
979 --------------------------                     << 
980 - Moved G4FieldTrack::LoadFromArray() to .cc a << 
981   thread-local static data local to the functi << 
982                                                << 
983 Mar 14, 2014 J.Apostolakis                - fi << 
984 --------------------------                     << 
985 - Fix assignment operator for G4FieldTrack. (C << 
986 - Improve printing of G4FieldTrack             << 
987                                                << 
988 Jan 17, 2014 P.Gumplinger                 - fi << 
989 -------------------------                      << 
990 - add G4Mag_EqRhs::SetChargeMomentumMass( part << 
991   to G4Mag_SpinEqRhs::SetChargeMomentumMass, s << 
992   http://hypernews.slac.stanford.edu/HyperNews << 
993                                                << 
994 Nov 18, 2013 P.Gumplinger                 - fi << 
995 -------------------------                      << 
996 - fix Coverity warning in G4RepleteEofM        << 
997                                                << 
998 Nov 17, 2013 J.Apostolakis                     << 
999 --------------------------                     << 
1000 - Fixed and improved HelixMixed Stepper:      << 
1001     Corrected the default stepper for small s << 
1002     Added Angle-threshold parameter. (Default << 
1003     Added more Steppers, including G4NystromR << 
1004     Revised Id numbers of Steppers, to make t << 
1005     More comments in Stepper().               << 
1006                                               << 
1007 Nov 05, 2013 P.Gumplinger                 - f << 
1008 -------------------------                     << 
1009 - remove writing out-of-bounds dydx[8] = 0. i << 
1010                                               << 
1011 Nov 04, 2013 P.Gumplinger                 - f << 
1012 -------------------------                     << 
1013 - add G4RepleteEofM to sources.cmake          << 
1014                                             f << 
1015 Nov 01st, 2013 P.Gumplinger               - f << 
1016 ---------------------------                   << 
1017 - add G4RepleteEofM: EofM that includes force << 
1018   as well as mu*grad(B) and spin tracking.    << 
1019                                               << 
1020 May 10th, 2013 P.Gumplinger/J.Apostolakis - f << 
1021 -----------------------------------------     << 
1022 - Revised number of field components (to allo << 
1023    18 are required for new applications (B, E << 
1024 - Fixes for initialisation errors found by Co << 
1025                                               << 
1026 May 10th, 2013 P.Gumplinger - field-V09-06-06 << 
1027 ---------------------------                   << 
1028 - prevent divided by zero and shortcut spin t << 
1029   particles: G4Mag_SpinEqRhs.cc, G4EqEMFieldW << 
1030   G4EqEMFieldWithEDM.cc                       << 
1031                                             f << 
1032 May 8th,  2013 P.Gumplinger/J.Apostolakis - f << 
1033 -----------------------------------------     << 
1034 - Introduced new class G4ChargeState to hold  << 
1035      (promoted from internal class of G4Field << 
1036 - Changed the signature of EquationOfMotion:: << 
1037  take G4ChargeState in place of G4double (cha << 
1038 - Deleted SetChargeMomentumMass from G4ChordF << 
1039    G4MagInt_Driver                            << 
1040                                               << 
1041 - Migrated testPropagateMagField and testProp << 
1042                                               << 
1043 March 19th, 2013 G.Cosmo - field-V09-06-03, f << 
1044 -------------------------                     << 
1045 - Cleanup of MT changes in G4FieldManagerStor << 
1046                                               << 
1047 February 26th, 2013 A.Dotti - field-V09-06-01 << 
1048 ---------------------------                   << 
1049 - First implementation of Cloning mechanism ( << 
1050                                               << 
1051 February 22nd, 2013 G.Cosmo - field-V09-06-00 << 
1052 ---------------------------                   << 
1053 - Cleanup of unnecessary changes for multi-th << 
1054 - Removed unused private data-members in G4Ma << 
1055                                               << 
1056 November 14th, 2012 P.Mato - field-V09-05-07  << 
1057 --------------------------                    << 
1058 - G4QuadrupoleMagField: allow displaced origi << 
1059 - Added G4SystemOfUnits.hh in unit tests      << 
1060                                               << 
1061 August 30th, 2012 P.Mato - field-V09-05-06    << 
1062 ------------------------                      << 
1063 - Adapted CMakeLists.txt files to new unit te << 
1064                                               << 
1065 June 11th, 2012 G.Cosmo - field-V09-05-05     << 
1066 -----------------------                       << 
1067 - Explicitly use inclusion of headers for sys << 
1068   constants, in plan to remove implicit inclu << 
1069                                               << 
1070 May 14th, 2012 G.Cosmo - field-V09-05-04      << 
1071 ----------------------                        << 
1072 - Fixed spurious case of hidden variable visi << 
1073   detected with '-Wshadow' compilation option << 
1074                                               << 
1075 February 3rd,  2012 J.Apostolakis - field-V09 << 
1076 ---------------------------------             << 
1077 - G4FieldTrack:                               << 
1078     Added new (inline) method to set the Rest << 
1079        reset this - and keep reuse the same G << 
1080        (across tracks.)                       << 
1081     Made SetCurvePnt() method private.        << 
1082     Simplified implementation of constructors << 
1083        1 division per call.                   << 
1084                                               << 
1085 February  3rd,  2012 G.Cosmo - field-V09-05-0 << 
1086 ----------------------------                  << 
1087 - Removed tests in CMakeLists.txt causing cat << 
1088   testing!                                    << 
1089                                               << 
1090 February  2nd,  2012 J.Apostolakis - field-V0 << 
1091 ----------------------------------            << 
1092 - G4Mag_UsualEqRhs: in SetChargeMomentumMass( << 
1093   division by zero; stopped updating 'fInvCur << 
1094   is obsolete).                               << 
1095 - Added tests in CMakeLists.txt               << 
1096                                               << 
1097 December 13th,  2011 G.Cosmo - field-V09-05-0 << 
1098 ----------------------------                  << 
1099 - Fixed Coverity defects in G4SimpleRunge (re << 
1100   data member) and G4FieldTrack (missing G4Ch << 
1101 - Synchronised unit tests to trunk (new test  << 
1102                                               << 
1103 November 11th,  2011 J.Apostolakis - field-V0 << 
1104 ----------------------------------            << 
1105 - Added G4Field.cc to list of files in source << 
1106                                               << 
1107 November  4th,  2011 J.Apostolakis - field-V0 << 
1108 ----------------------------------            << 
1109 - G4Field: revised to improve ability to dete << 
1110   Added new data member to identify gravity f << 
1111   Added new method IsGravityActive() to acces << 
1112   Created new source file: moving constructor << 
1113 - Changed G4UniformGravityField and G4Electro << 
1114   to accomodate this refinement.              << 
1115                                               << 
1116 November 2nd,  2011 P.Gumplinger - field-V09- << 
1117 --------------------------------              << 
1118 - update list of files in sources.cmake       << 
1119                                               << 
1120 October 28th,  2011 P.Gumplinger - field-V09- << 
1121 --------------------------------              << 
1122 - Added (uniform) gravity field capability.   << 
1123   New classes G4EqGravityField, G4UniformGrav << 
1124                                               << 
1125   *Required* for co-working tag in Transporta << 
1126                                               << 
1127 October 12th,  2011 P.Gumplinger - field-V09- << 
1128 --------------------------------              << 
1129 - replaced: omegac = 0.105658387*GeV/mass * 2 << 
1130   with:     omegac = (eplus/particleMass)*c_l << 
1131   in G4EqEMFieldWithEDM.cc, G4Mag_SpinEqRhs.c << 
1132   changed calculation:                        << 
1133      std::sqrt(kineticEnergy*kineticEnergy +  << 
1134   to:                                         << 
1135      std::sqrt(kineticEnergy*(kineticEnergy+2 << 
1136   in G4FieldTrack.cc                          << 
1137                                               << 
1138 August 11th,  2011 G.Cosmo - field-V09-04-01  << 
1139 --------------------------                    << 
1140 - Migrated to new G4Exception scheme for warn << 
1141 - Defined scheme for warnings/errors coding:  << 
1142   + 1xxx for warnings, 0xxx for errors.       << 
1143   Code numbering:                             << 
1144   + 0001: not supported or implemented featur << 
1145   + 0002: invalid setup/construct;            << 
1146   + 0003: invalid run condition;              << 
1147   + 1001: incorrect setup; automatically adap << 
1148   + 1002: notification.                       << 
1149                                               << 
1150 May 13th, 2011 J.Apostolakis                  << 
1151 ----------------------------                  << 
1152 - Added new class G4TrialsCounter for keeping << 
1153 - Avoid printing out pointer in G4CachedMagne << 
1154 - Updated unit tests.                         << 
1155                                               << 
1156 May 12th,  2011 G.Cosmo - field-V09-04-00     << 
1157 -----------------------                       << 
1158 - Fixed compilation warnings from gcc-4.6.0 f << 
1159                                               << 
1160 May 5th,  2011 J.Apostolakis                  << 
1161 ----------------------------                  << 
1162 - Reordered data members to group invariants, << 
1163                                               << 
1164 Sep 10th,  2010 J.Apostolakis - field-V09-03- << 
1165 -----------------------------                 << 
1166 - Revised constructor of G4MagErrorStepper to << 
1167 - Corrected MagErrorStepper to copy State Var << 
1168 - Enable G4ConstRK4 to copy remaining State V << 
1169                                               << 
1170 Sep 10th,  2010 J.Apostolakis - field-V09-03- << 
1171 -----------------------------                 << 
1172 - New class G4MonopoleEq for rhs of d(pc)/ds  << 
1173   in SI units (V.Grichine).                   << 
1174 - Fixed passing of time in G4NystromRK4       << 
1175                                               << 
1176 Jul 21st,  2010 T.Nikitina - field-V09-03-01  << 
1177 --------------------------                    << 
1178 - Fixed cases of memory corruption in G4RKG3_ << 
1179 - Fixed case of unused array data member in G << 
1180 - Removed useless code never executed in G4Co << 
1181 - Fixed initialization in G4NystromRK4 constr << 
1182                                               << 
1183 Jul 14th,  2010 G.Cosmo - field-V09-03-00     << 
1184 -----------------------                       << 
1185 - Added dummy initialization of members in co << 
1186   G4ConstRK4, G4EqEMFieldWithEDM, G4EqEMField << 
1187   G4FieldTrack, G4MagHelicalStepper, G4MagInt << 
1188   G4Mag_SpinEqRhs, G4Mag_UsualEqRhs, G4Nystro << 
1189   G4UniformElectricField, G4UniformElectricFi << 
1190                                               << 
1191 Nov 12th,  2009 J.Apostolakis - field-V09-02- << 
1192 -----------------------------                 << 
1193 - G4MagIntegratorDriver:  activate check on i << 
1194                                               << 
1195 Nov 12th,  2009 J.Apostolakis - field-V09-02- << 
1196 -----------------------------  (fix only)     << 
1197 - G4Nystrom:  Corrected interface method getF << 
1198                 (Problem found by gcc 4.3 - i << 
1199                                               << 
1200 Nov 6th,  2009 P.Gumplinger - field-V09-02-07 << 
1201 ---------------------------                   << 
1202 - bug fix in G4EqEMFieldWithSpin and G4EqEMFi << 
1203   thanks to Hiromi Iinuma (KEK) see:          << 
1204   http://hypernews.slac.stanford.edu/HyperNew << 
1205                                               << 
1206 Nov 5th,  2009 J.Apostolakis - field-V09-02-0 << 
1207 ----------------------------                  << 
1208 - G4MagIntegratorDriver.cc : Enabled call to  << 
1209 - G4NystromRK4.cc          : Disabled auxilia << 
1210                               ComputeRightHan << 
1211                                               << 
1212 Nov 5th,  2009 J.Apostolakis - field-V09-02-0 << 
1213 ----------------------------                  << 
1214 - Added new virtual method CalculateRightHand << 
1215       in caching momentum (and field value) b << 
1216       Default implementation in G4MagIntegrat << 
1217 - G4Nystrom:  New Set/Get method for cache di << 
1218               Changed private data members in << 
1219 - G4MagIntegratorDriver:  alternative call to << 
1220               As a result G4NystromRK4 operat << 
1221                                               << 
1222 Nov 5th,  2009 J.Apostolakis - field-V09-02-0 << 
1223 ----------------------------                  << 
1224 - G4CachedMagneticField: New Simple class to  << 
1225      Speeds up code when calculation of field << 
1226 - G4NystromRK4 :         New Stepper with Nys << 
1227      with analytic estimation of integration  << 
1228      Greatly reduces number of field value pe << 
1229 - Revised testPropagateMagField to use Cached << 
1230      and to cover G4NystromRK4 and G4ConstRK4 << 
1231                                               << 
1232 Nov 4th,  2009 P.Gumplinger - field-V09-02-03 << 
1233 ---------------------------                   << 
1234 - (minor change) remove comment from G4EqEMFi << 
1235   add G4EqEMFieldWithEDM class: this is the R << 
1236   electric and magnetic field, with spin trac << 
1237   Thanks to Kevin Lynch, Phys. Dept. at Bosto << 
1238                                               << 
1239 May 18th, 2009 T.Nikitina - field-V09-02-02   << 
1240 -------------------------                     << 
1241 - Enhanced algorithm G4ChordFinder::ApproxCur << 
1242   BrentLocator.                               << 
1243                                               << 
1244 March 25th, 2009 G.Cosmo - field-V09-02-01    << 
1245 ------------------------                      << 
1246 - Some code cleanup and formatting...         << 
1247                                               << 
1248 March 6th, 2009 P.Gumplinger - field-V09-02-0 << 
1249 ----------------------------                  << 
1250 - Added 3rd term of BMT equation (Spin x Beta << 
1251   addresses emfields forum posting #155 (bug  << 
1252   Phys. Dept. at Boston University.           << 
1253 - Moved renormalization of spin from G4EqEMFi << 
1254   G4ClassicalRK4 and G4SimpleHeum.            << 
1255 - Added Spin propagation errors to the criter << 
1256   G4MagIntegratorDriver but actually don't ad << 
1257                                                   19 
1258 November, 19th, 2008  P.Gumplinger - field-V0     20 November, 19th, 2008  P.Gumplinger - field-V09-01-05
1259 ----------------------------------                21 ----------------------------------
1260 - Renormalized the spin to 1 in G4EqEMFieldWi <<  22 - Renormalize the spin to ONE in G4EqEMFieldWithSpin.cc and G4Mag_SpinEqRhs.cc
1261                                                   23 
1262 November, 7th, 2008   P.Gumplinger - field-V0     24 November, 7th, 2008   P.Gumplinger - field-V09-01-04
1263 ----------------------------------                25 ----------------------------------
1264 - Added SetAnomaly() and GetAnomaly() accesso     26 - Added SetAnomaly() and GetAnomaly() accessors to G4EqEMFieldWithSpin.
1265                                                   27 
1266 October, 28th, 2008   T.Nikitina - field-V09-     28 October, 28th, 2008   T.Nikitina - field-V09-01-03
1267 --------------------------------                  29 --------------------------------
1268 - Added 'ApproxCurveV' to method G4ChordFinde <<  30 - Added 'ApproxCurveV' to method G4ChordFinder::ApproxCurvePointS() in 
1269   order to better calculate the curve length.     31   order to better calculate the curve length.
1270 - Some code cleanup.                              32 - Some code cleanup.
1271                                                   33 
1272 September, 18th, 2008   T.Nikitina                34 September, 18th, 2008   T.Nikitina
1273 ----------------------------------                35 ----------------------------------
1274 - Added new stepper class G4ConstRK4, perform     36 - Added new stepper class G4ConstRK4, performing integration of one step
1275   with error calculation in constant magnetic     37   with error calculation in constant magnetic field; implementation derived
1276   from G4ClassicalRK4.                            38   from G4ClassicalRK4.
1277                                                   39 
1278 July, 15th, 2008   J.Apostolakis - field-V09-     40 July, 15th, 2008   J.Apostolakis - field-V09-01-02
1279 --------------------------------                  41 --------------------------------
1280 - Revised signature of G4ChordFinder::FinderN     42 - Revised signature of G4ChordFinder::FinderNextChord(), making 'FieldTrack'
1281   argument passed a reference.                    43   argument passed a reference.
1282                                                   44 
1283 May, 28th, 2008   T.Nikitina                      45 May, 28th, 2008   T.Nikitina
1284 ----------------------------                      46 ----------------------------
1285 - G4ChordFinder: added new method ApproxCurve     47 - G4ChordFinder: added new method ApproxCurvePointS() using Brent second order
1286   location mechanism.                             48   location mechanism.
1287                                                   49 
1288 April 24th, 2008   T.Nikitina - field-V09-01-     50 April 24th, 2008   T.Nikitina - field-V09-01-01
1289 -----------------------------                     51 -----------------------------
1290 - Fix 'unused' non-initialized values of dydx     52 - Fix 'unused' non-initialized values of dydx in G4EqMagElectricField
1291   and G4EqEMFieldWithSpin.                        53   and G4EqEMFieldWithSpin.
1292                                                   54 
1293 January 17th, 2008   G.Cosmo - field-V09-01-0     55 January 17th, 2008   G.Cosmo - field-V09-01-00
1294 ----------------------------                      56 ----------------------------
1295 - G4CashKarpRKF45: deleted un-needed duplicat     57 - G4CashKarpRKF45: deleted un-needed duplicate (and unused) instance variable
1296  'fNumberOfVariables', already defined in G4M     58  'fNumberOfVariables', already defined in G4MagIntegratorStepper. (J.Ap.)
1297 - Some code cleanup.                              59 - Some code cleanup.
1298                                                   60 
1299 December 7th, 2007   J.Apostolakis & T.Nikiti     61 December 7th, 2007   J.Apostolakis & T.Nikitina - field-V09-00-03
1300 ---------------------------------------------     62 -----------------------------------------------
1301 - New class G4FieldManagerStore. It enables r     63 - New class G4FieldManagerStore. It enables resetting of all chord
1302   finders' state. Needed to address problem r     64   finders' state. Needed to address problem reported by user.
1303                                                   65 
1304 September 9th, 2007  G.Cosmo - field-V09-00-0     66 September 9th, 2007  G.Cosmo - field-V09-00-02a
1305 ----------------------------                      67 ----------------------------
1306 - Some code cleanup in G4MagHelicalStepper.cc     68 - Some code cleanup in G4MagHelicalStepper.cc.
1307                                                   69 
1308 August 30th, 2007    P.Gumplinger - field-V09     70 August 30th, 2007    P.Gumplinger - field-V09-00-02
1309 ---------------------------------                 71 ---------------------------------
1310 - Add G4EqEMFieldWithSpin class to allow trac     72 - Add G4EqEMFieldWithSpin class to allow tracking of spin also in
1311   G4ElectroMagneticFields                         73   G4ElectroMagneticFields
1312                                                   74 
1313 August 21st, 2007    T.Nikitina - field-V09-0     75 August 21st, 2007    T.Nikitina - field-V09-00-01
1314 -------------------------------                   76 -------------------------------
1315 - Fix to DistChord() method for Helical Stepp     77 - Fix to DistChord() method for Helical Steppers: adopt 'special' case
1316   also for Ang<2pi not only for Ang<pi; use c     78   also for Ang<2pi not only for Ang<pi; use cos() in place of tan(), to
1317   improve CPU performance.                        79   improve CPU performance.
1318 - Improved AdvanceHelix() to be able to make      80 - Improved AdvanceHelix() to be able to make half step and full step
1319   in one call.                                    81   in one call.
1320 - In G4HelixMixedStepper added possibility to     82 - In G4HelixMixedStepper added possibility to call different steppers for
1321   small steps and add some statistics how off     83   small steps and add some statistics how offen different steppers are called.
1322 - G4RKG3_Stepper: improved internal algorithm     84 - G4RKG3_Stepper: improved internal algorithm to use pre-computed values;
1323   the stepper now gives comparable CPU perfor <<  85   the stepper now gives comparable CPU performance as ClassicalRK4. 
1324 - Updated unit tests.                             86 - Updated unit tests.
1325                                                   87 
1326 August 17th, 2007    G.Cosmo - field-V09-00-0     88 August 17th, 2007    G.Cosmo - field-V09-00-00
1327 ----------------------------                      89 ----------------------------
1328 - Changed FatalException to EventMustBeAborte     90 - Changed FatalException to EventMustBeAborted in AccurateAdvance()
1329   if proposed integration step is negative.       91   if proposed integration step is negative.
1330                                                   92 
1331 June 8th, 2007    T.Nikitina - field-V08-03-0     93 June 8th, 2007    T.Nikitina - field-V08-03-03
1332 ----------------------------                      94 ----------------------------
1333 - Relaxed FatalException to Warning in G4MagI <<  95 - Relaxed FatalException to Warning in G4MagIntegratorDriver::AccurateAdvance() 
1334   for case of step zero and return previous v <<  96   for case of step zero and return previous value. This fixes problem 
1335   observed by ATLAS in release 8.3 when requi     97   observed by ATLAS in release 8.3 when requiring very accurate propagation
1336   -- ie using very small values for acceptabl     98   -- ie using very small values for acceptable integration error.
1337                                                   99 
1338 May 18th, 2007    T.Nikitina - field-V08-03-0    100 May 18th, 2007    T.Nikitina - field-V08-03-02
1339 ----------------------------                     101 ----------------------------
1340 - New class G4HelixMixedStepper, mixing helic    102 - New class G4HelixMixedStepper, mixing helical stepper and RK
1341   G4MagHelicalStepper                            103   G4MagHelicalStepper
1342 - Keep values of  inverse Radius, ..             104 - Keep values of  inverse Radius, ..
1343 - New calculation of DistChord for SteppingAn    105 - New calculation of DistChord for SteppingAngle > pi
1344   G4RKG3Stepper                                  106   G4RKG3Stepper
1345 - New calculation of DistChord for SteppingAn    107 - New calculation of DistChord for SteppingAngle > pi
1346                                                  108 
1347 May 16th, 2007    G.Cosmo - field-V08-03-01      109 May 16th, 2007    G.Cosmo - field-V08-03-01
1348 -------------------------                        110 -------------------------
1349 - Introduced new class G4ErrorMag_UsualEqRhs     111 - Introduced new class G4ErrorMag_UsualEqRhs used to reverse the magnetic
1350   field when propagation is backwards for err    112   field when propagation is backwards for error propagation (by P.Arce).
1351 - Coworks with tag "global-V08-03-02".           113 - Coworks with tag "global-V08-03-02".
1352                                                  114 
1353 May 11th, 2007    G.Cosmo - field-V08-03-00      115 May 11th, 2007    G.Cosmo - field-V08-03-00
1354 -------------------------                        116 -------------------------
1355 - Use call to G4GeometryTolerance instead of     117 - Use call to G4GeometryTolerance instead of kCarTolerance constant in
1356   G4MagIntegratorDriver.                         118   G4MagIntegratorDriver.
1357 - Requires tag "global-V08-03-00" and related    119 - Requires tag "global-V08-03-00" and related tag set.
1358                                                  120 
1359 May 10th, 2007    J.Apostolakis - field-V08-0    121 May 10th, 2007    J.Apostolakis - field-V08-02-01
1360 -------------------------------                  122 -------------------------------
1361 - G4MagIntegratorDriver:                      << 123 - G4MagIntegratorDriver: 
1362     * added protections against zero initial     124     * added protections against zero initial or internal step h=0, (exceptions)
1363     * revised (re)calculation of h, and quit  << 125     * revised (re)calculation of h, and quit loop if h/length < smallest-fraction (~ 10^-12) 
1364                                                  126 
1365 April 26th, 2007  T.Nikitina - field-V08-02-0    127 April 26th, 2007  T.Nikitina - field-V08-02-00
1366 ----------------------------                     128 ----------------------------
1367 - Corrected integration constants in G4MagHel    129 - Corrected integration constants in G4MagHelicalStepper
1368 - Added implementation of G4RKG3_Stepper, ste    130 - Added implementation of G4RKG3_Stepper, stepper derived from Geant3.
1369 - Updated NTST unit test. New unit test "fiel    131 - Updated NTST unit test. New unit test "field06" for comparison of steppers.
1370                                                  132 
1371 November 14th, 2006  J.Apostolakis - field-V0    133 November 14th, 2006  J.Apostolakis - field-V08-01-02
1372 ----------------------------------               134 ----------------------------------
1373 - G4MagIntegratorDriver                          135 - G4MagIntegratorDriver
1374   * Made first argument of GetDerivatives a r    136   * Made first argument of GetDerivatives a reference - avoid copy
1375 - G4MagIntegratorStepper                         137 - G4MagIntegratorStepper
1376   * Include the SetEquationOfMotion() method  << 138   * Include the SetEquationOfMotion() method in G4MagIntegratorStepper 
1377     (for Geant4e, as in field-V08-01-00)         139     (for Geant4e, as in field-V08-01-00)
1378   * Update of disclaimers.                       140   * Update of disclaimers.
1379                                                  141 
1380 November 13th, 2006  G.Cosmo - field-V08-01-0    142 November 13th, 2006  G.Cosmo - field-V08-01-01
1381 ----------------------------                     143 ----------------------------
1382 - G4FieldTrack:                                  144 - G4FieldTrack:
1383   o Implemented missing definition for GetCha    145   o Implemented missing definition for GetCharge().
1384   o Corrected 'const' qualifier for accessors    146   o Corrected 'const' qualifier for accessors in the subclass.
1385   o Cleanup ...                                  147   o Cleanup ...
1386 - NOTE: this tag is NOT including the change     148 - NOTE: this tag is NOT including the change below in G4MagIntegratorStepper.
1387                                                  149 
1388 June 21st, 2006  J.Apostolakis - field-V08-01    150 June 21st, 2006  J.Apostolakis - field-V08-01-00
1389 ------------------------------                   151 ------------------------------
1390 - Including the SetEquationOfMotion() method     152 - Including the SetEquationOfMotion() method in G4MagIntegratorStepper
1391                                                  153 
1392 June 22nd, 2006  J.Apostolakis - field-V08-00    154 June 22nd, 2006  J.Apostolakis - field-V08-00-07
1393 -----------------------------                    155 -----------------------------
1394 - G4ExactHelixStepper: reintroduced corrected << 156 - G4ExactHelixStepper: reintroduced corrected class 
1395     --> testPropagateMagField now tests it al    157     --> testPropagateMagField now tests it also (added)
1396 - G4MagHelicalStepper: made Stepper virtual ( << 158 - G4MagHelicalStepper: made Stepper virtual (for now) 
1397              to enable G4ExactHelixStepper to    159              to enable G4ExactHelixStepper to override it
1398                                                  160 
1399 June 21st, 2006  J.Apostolakis - field-V08-00    161 June 21st, 2006  J.Apostolakis - field-V08-00-06
1400 -----------------------------                    162 -----------------------------
1401 - G4ExactHelixStepper: taking out class       << 163 - G4ExactHelixStepper: taking out class 
1402    (provisional tag in case of difficulties w    164    (provisional tag in case of difficulties with class, revisions)
1403                                                  165 
1404 --- The field-V08-00-0x , x > 6, tags do not     166 --- The field-V08-00-0x , x > 6, tags do not include the change below
1405                                                  167 
1406 May 27th, 2006  J.Apostolakis - field-V08-00-    168 May 27th, 2006  J.Apostolakis - field-V08-00-05
1407 -----------------------------                    169 -----------------------------
1408 - G4FieldTrack: Fix for simple compilation er    170 - G4FieldTrack: Fix for simple compilation error on Sun.
1409                                                  171 
1410 May 23rd, 2006  J.Apostolakis - field-V08-00-    172 May 23rd, 2006  J.Apostolakis - field-V08-00-04
1411 -----------------------------                    173 -----------------------------
1412 - G4FieldTrack: Fix for memory leak for Charg    174 - G4FieldTrack: Fix for memory leak for ChargeState
1413    Made G4ChargeState a data member (has an i    175    Made G4ChargeState a data member (has an instance)
1414                                                  176 
1415 May 18th, 2006  J.Apostolakis - field-V08-00-    177 May 18th, 2006  J.Apostolakis - field-V08-00-03
1416 -----------------------------                    178 -----------------------------
1417 - G4FieldTrack: Fix for issue with gcc 4.0  (    179 - G4FieldTrack: Fix for issue with gcc 4.0  (mac)
1418                                                  180 
1419 May 16th, 2006  J.Apostolakis - field-V08-00-    181 May 16th, 2006  J.Apostolakis - field-V08-00-02
1420 -----------------------------                    182 -----------------------------
1421 - G4ExactHelixStepper                            183 - G4ExactHelixStepper
1422    Taken out alpha version - it was included  << 184    Taken out alpha version - it was included in error 
1423                                                  185 
1424 May 11th, 2006  J.Apostolakis - field-V08-00-    186 May 11th, 2006  J.Apostolakis - field-V08-00-01
1425 -----------------------------                    187 -----------------------------
1426 - G4FieldTrack                                   188 - G4FieldTrack
1427    Significant, provisional change:              189    Significant, provisional change:
1428      * Added charge and moments to FieldTrack << 190      * Added charge and moments to FieldTrack 
1429          (SetMethods,  and pointer to embedde    191          (SetMethods,  and pointer to embedded class G4ChargeState)
1430    Technical revisions:                          192    Technical revisions:
1431      * New constructor, with charge and witho    193      * New constructor, with charge and without velocity
1432      * New almost-default constructor (taking    194      * New almost-default constructor (taking a character)
1433    Also:                                      << 195    Also: 
1434      * New constructor to take const referenc    196      * New constructor to take const reference to Spin
1435      * New implementation method UpdateFourMo    197      * New implementation method UpdateFourMomentum
1436      * Streaming operator takes const referen << 198      * Streaming operator takes const reference, 
1437          and outputs momentum magnitude & dir    199          and outputs momentum magnitude & direction magn.
1438                                                  200 
1439 - G4ExactHelixStepper                            201 - G4ExactHelixStepper
1440    Included in error                          << 202    Included in error 
1441                                                  203 
1442 Apr 6th, 2006  J.Apostolakis - field-V08-00-0    204 Apr 6th, 2006  J.Apostolakis - field-V08-00-00
1443 ----------------------------                     205 ----------------------------
1444 - In G4FieldManager                              206 - In G4FieldManager
1445  Added missing  const GetChordFinder() method << 207  Added missing  const GetChordFinder() method -- Problem report #847 
1446  Corrected description (at top of include fil    208  Corrected description (at top of include file hh):
1447   - It is possible to set the field manager o    209   - It is possible to set the field manager of a logical volume (since long)
1448                                                  210 
1449                                                  211 
1450 Nov 9th, 2005  G.Cosmo - field-V07-01-00         212 Nov 9th, 2005  G.Cosmo - field-V07-01-00
1451 ----------------------                           213 ----------------------
1452 - Archived source code of field01 unit test,     214 - Archived source code of field01 unit test, now moved to examples/extended.
1453 - Migrated unit test NTST to use <sstream> an    215 - Migrated unit test NTST to use <sstream> and std:: namespace. Up-to-date
1454   with G4VParticleChange new interface.          216   with G4VParticleChange new interface.
1455                                                  217 
1456 Dec 2nd, 2004  G.Cosmo - field-V06-02-02         218 Dec 2nd, 2004  G.Cosmo - field-V06-02-02
1457 ----------------------                           219 ----------------------
1458 - Implemented migration to <cmath> for standa    220 - Implemented migration to <cmath> for standard mathematical functions.
1459                                                  221 
1460 Dec 2nd, 2004  J.Apostolakis - field-V06-02-0    222 Dec 2nd, 2004  J.Apostolakis - field-V06-02-01
1461 ----------------------------                     223 ----------------------------
1462 - Improvements to comments in key Field class    224 - Improvements to comments in key Field classes
1463 - Changes to test/NTST, renaming 'main()' fil    225 - Changes to test/NTST, renaming 'main()' file & modifying input files
1464 - Several improvements to test files             226 - Several improvements to test files
1465    testProElectroMagField.cc                     227    testProElectroMagField.cc
1466      * updating for new Electric Field inheri    228      * updating for new Electric Field inheritance (& need for
1467        different ChordFinder creation )          229        different ChordFinder creation )
1468      * adding columns to print-outs in spin c    230      * adding columns to print-outs in spin case for better diagnosis
1469    testPropagateMagField.cc                      231    testPropagateMagField.cc
1470      * Added verbosity level 1 to field Propa    232      * Added verbosity level 1 to field Propagator, relabelled old method.
1471    testPropagateSpin.cc                          233    testPropagateSpin.cc
1472      * Added more printout of parameters (sta    234      * Added more printout of parameters (state) of G4PropagatorInField
1473        and G4FieldManager before running each    235        and G4FieldManager before running each test.
1474    test/NTST                                     236    test/NTST
1475      * Renamed main() file to testNTST.cc and    237      * Renamed main() file to testNTST.cc and added G4UItcsh terminal.
1476                                                  238 
1477                                                  239 
1478 Oct 20th, 2004  P.Gumplinger - field-V06-02-0    240 Oct 20th, 2004  P.Gumplinger - field-V06-02-00
1479 ----------------------------                     241 ----------------------------
1480 - Added Set/GetAnomaly() methods in G4Mag_Spi    242 - Added Set/GetAnomaly() methods in G4Mag_SpinEqRhs.
1481                                                  243 
1482 Feb 9th, 2004  G.Cosmo - field-V06-00-00         244 Feb 9th, 2004  G.Cosmo - field-V06-00-00
1483 ----------------------                           245 ----------------------
1484 - G4UniformMagField.cc: added missing impleme    246 - G4UniformMagField.cc: added missing implementation for
1485   GetConstantFieldValue(). Fixes bug report #    247   GetConstantFieldValue(). Fixes bug report #575.
1486                                                  248 
1487 Nov 13th, 2003  J.Apostolakis - field-V05-02-    249 Nov 13th, 2003  J.Apostolakis - field-V05-02-08
1488 -----------------------------                    250 -----------------------------
1489 - G4ChordFinder:                              << 251 - G4ChordFinder:  
1490   o extended the arguments of AdvanceChordLim    252   o extended the arguments of AdvanceChordLimited  and  FindNextChord
1491     adding the current safety sphere (origin,    253     adding the current safety sphere (origin, radius), for use in optimising.
1492   o fixed set functions which had side effect    254   o fixed set functions which had side effect (on first fraction.)
1493 - Added new class G4ChordFinderSaf (using abo    255 - Added new class G4ChordFinderSaf (using above)
1494   o which uses safety to create longer chords << 256   o which uses safety to create longer chords, so enabling 
1495       propagation in fewer steps --> performa    257       propagation in fewer steps --> performance optimisation
1496 - G4FieldManager:                             << 258 - G4FieldManager: 
1497     Changed default accuracy parameters to mu    259     Changed default accuracy parameters to much better values:
1498         Epsilon Min Default  to 5.0e-5  from     260         Epsilon Min Default  to 5.0e-5  from 5.0e-7  (too small)
1499         Epsilon Max Default  to 0.001   from     261         Epsilon Max Default  to 0.001   from 0.05    (far too big)
1500                                                  262 
1501 Nov  7th, 2003  J.Apostolakis - field-V05-02-    263 Nov  7th, 2003  J.Apostolakis - field-V05-02-07
1502 -----------------------------                    264 -----------------------------
1503 - G4ChordFinder                               << 265 - G4ChordFinder 
1504   o Made this a base class                       266   o Made this a base class
1505     * to enable specialised implementations      267     * to enable specialised implementations
1506     * virtual methods: FindNextChord, PrintSt    268     * virtual methods: FindNextChord, PrintStatistics)
1507     * new method AccumulateStatistics to aid     269     * new method AccumulateStatistics to aid in this
1508                                                  270 
1509   o New default value of                         271   o New default value of                                      Accuracy!!
1510       Delta Chord        to  0.25 mm    (from    272       Delta Chord        to  0.25 mm    (from 3.00 mm)     <-----
1511                                               << 273                                                                  
1512 - G4FieldManager                                 274 - G4FieldManager
1513   o Changed default values of                    275   o Changed default values of
1514       Delta One Step     to  0.010 mm   (from    276       Delta One Step     to  0.010 mm   (from 0.25 mm)     <-----
1515       Delta Intersection to  0.001 mm   (from    277       Delta Intersection to  0.001 mm   (from 0.10 mm)     <-----
1516     for increased default accuracy               278     for increased default accuracy
1517   o Use field's DoesFieldChangesEnergy method    279   o Use field's DoesFieldChangesEnergy method to set relevant member variable
1518                                                  280 
1519 Nov 7th, 2003  J.Apostolakis - field-V05-02-0    281 Nov 7th, 2003  J.Apostolakis - field-V05-02-06
1520 ----------------------------                     282 ----------------------------
1521 - G4ChordFinder                                  283 - G4ChordFinder
1522    Created new class members for parameters u    284    Created new class members for parameters used in heuristics:
1523        fFirstFraction            for first st    285        fFirstFraction            for first step
1524        fFractionLast             fraction of     286        fFractionLast             fraction of last step, if redoing
1525        fFractionNextEstimate     confidence i    287        fFractionNextEstimate     confidence in step est from chord
1526        fMultipleRadius           for small ra    288        fMultipleRadius           for small radii of curve
1527    New method to Print Statistics.               289    New method to Print Statistics.
1528    Verbosity to enable optional printing of s    290    Verbosity to enable optional printing of stats in destructor.
1529                                                  291 
1530 Nov 7th, 2003  J.Apostolakis - field-V05-02-0    292 Nov 7th, 2003  J.Apostolakis - field-V05-02-05
1531 ----------------------------                     293 ----------------------------
1532 - G4ChordFinder                                  294 - G4ChordFinder
1533   o Added simple statistics (with access meth    295   o Added simple statistics (with access methods)
1534 - test/NTST                                      296 - test/NTST
1535   o Added new test, taken from D. Williams' e    297   o Added new test, taken from D. Williams' exampleNTST
1536      modified and maintained by J. Apostolaki << 298      modified and maintained by J. Apostolakis 
1537                                                  299 
1538 Nov 5th, 2003  J.Apostolakis - field-V05-02-0    300 Nov 5th, 2003  J.Apostolakis - field-V05-02-04
1539 ----------------------------                     301 ----------------------------
1540 - G4FieldManager                                 302 - G4FieldManager
1541   o Added Get/Set Min/Max imumEpsilonStep        303   o Added Get/Set Min/Max imumEpsilonStep
1542   o Added fEpsilonMin fEpsilonMax & default t << 304   o Added fEpsilonMin fEpsilonMax & default to member variables. 
1543    >> Now these can be tailored for different    305    >> Now these can be tailored for different parts of a detector or setup
1544                                                  306 
1545 - G4Field G4ElectroMagneticField G4MagneticFi    307 - G4Field G4ElectroMagneticField G4MagneticField
1546   o Adding the virtual method   DoesFieldChan    308   o Adding the virtual method   DoesFieldChangeEnergy()  [to be used later]
1547   o So that G4ElectroMagneticField derives fr    309   o So that G4ElectroMagneticField derives from G4Field
1548     and G4MagneticField derives from G4Electr    310     and G4MagneticField derives from G4ElectroMagneticField
1549                                                  311 
1550 - G4MagErrorStepper and derived classes          312 - G4MagErrorStepper and derived classes
1551     (G4ClassicalRK4 G4SimpleRunge G4ExplicitE    313     (G4ClassicalRK4 G4SimpleRunge G4ExplicitEuler G4ImplicitEuler G4SimpleHeum)
1552   o the constructors take G4EquationOfMotion     314   o the constructors take G4EquationOfMotion in place of a G4Mag_EqRhs
1553     as it these applicable to all types of eq << 315     as it these applicable to all types of equations 
1554      (not just ones for Magnetic field)          316      (not just ones for Magnetic field)
1555                                                  317 
1556 - G4EqMagElectricField                           318 - G4EqMagElectricField
1557   o derives from G4EquationOfMotion              319   o derives from G4EquationOfMotion
1558                                                  320 
1559 - G4ChordFinder                                  321 - G4ChordFinder
1560   o Moved simple constructor to .cc file (tog    322   o Moved simple constructor to .cc file (together with 'complex' one)
1561   o Changed fDefaultDeltaChord to a constant     323   o Changed fDefaultDeltaChord to a constant member variable (from class var.)
1562                                                  324 
1563 Nov 4th, 2003  G.Cosmo - field-V05-02-03         325 Nov 4th, 2003  G.Cosmo - field-V05-02-03
1564 ----------------------                           326 ----------------------
1565 Undocumented.                                    327 Undocumented.
1566                                                  328 
1567 Nov 4th, 2003  G.Cosmo - field-V05-02-02         329 Nov 4th, 2003  G.Cosmo - field-V05-02-02
1568 ----------------------                           330 ----------------------
1569 - G4ChordFinder.cc:                              331 - G4ChordFinder.cc:
1570   o Fixed compilation problem occuring when G    332   o Fixed compilation problem occuring when G4DEBUG_FIELD was set.
1571                                                  333 
1572 Oct 31st, 2003  G.Cosmo - field-V05-02-01        334 Oct 31st, 2003  G.Cosmo - field-V05-02-01
1573 -----------------------                          335 -----------------------
1574 - Code cleanup and removal of redundant heade    336 - Code cleanup and removal of redundant header includes, replaced
1575   where necessary by forward declarations.       337   where necessary by forward declarations.
1576                                                  338 
1577 Oct 24th, 2003  G.Cosmo - field-V05-02-00        339 Oct 24th, 2003  G.Cosmo - field-V05-02-00
1578 -----------------------                          340 -----------------------
1579 - Migrated to use new G4Exception scheme.        341 - Migrated to use new G4Exception scheme.
1580 - Updated outputs of unit tests.                 342 - Updated outputs of unit tests.
1581                                                  343 
1582 Jun 25th, 2003  J.Apostolakis - field-V05-01-    344 Jun 25th, 2003  J.Apostolakis - field-V05-01-06
1583 -----------------------------                    345 -----------------------------
1584 - Suppressed printing of statistics (by defau    346 - Suppressed printing of statistics (by default) in MagIntegrationDriver.
1585 - Fix for unused variables warning in ChordFi    347 - Fix for unused variables warning in ChordFinder.
1586                                                  348 
1587 Jun 24th, 2003  J.Apostolakis - field-V05-01-    349 Jun 24th, 2003  J.Apostolakis - field-V05-01-05
1588 -----------------------------                    350 -----------------------------
1589 - Fix for problems introduced in field-V05-01    351 - Fix for problems introduced in field-V05-01-03:
1590   o G4ChordFinder:                               352   o G4ChordFinder:
1591     - Fixed unitialised variable for next ste    353     - Fixed unitialised variable for next step (now used for optimisation).
1592     - Protected assignment of 'fLastStepEstim    354     - Protected assignment of 'fLastStepEstimate_Unconstrained' in case of
1593       unitialised value.                         355       unitialised value.
1594                                                  356 
1595 Jun 21st, 2003  J.Apostolakis - field-V05-01-    357 Jun 21st, 2003  J.Apostolakis - field-V05-01-04
1596 -----------------------------                    358 -----------------------------
1597 - G4FieldManager:                                359 - G4FieldManager:
1598   o Revised into 'slightly' abstract class wi    360   o Revised into 'slightly' abstract class with one (new) virtual method:
1599       ConfigureForTrack( const G4Track *)        361       ConfigureForTrack( const G4Track *)
1600     to enable the user to configure it with d    362     to enable the user to configure it with different accuracy parameters
1601     depending on energy, particle id, volume,    363     depending on energy, particle id, volume, or other track state.
1602     Currently by default, no such configurati    364     Currently by default, no such configuration action is undertaken.
1603                                                  365 
1604 Jun 21st, 2003  J.Apostolakis - field-V05-01-    366 Jun 21st, 2003  J.Apostolakis - field-V05-01-03
1605 -----------------------------                    367 -----------------------------
1606 - Revised G4ChordFinder:                         368 - Revised G4ChordFinder:
1607   * FindNextChord now provides next Step esti    369   * FindNextChord now provides next Step estimate (for accuracy in Integr.)
1608   * AdvanceChordLimited to use                   370   * AdvanceChordLimited to use
1609     - above extra argument to FindNextChord      371     - above extra argument to FindNextChord
1610     - the next Step argument as initial-step     372     - the next Step argument as initial-step suggested to Accurate Advance
1611 - G4MagIntegratorDriver:                         373 - G4MagIntegratorDriver:
1612   * Added extra argument to Accurate Advance:    374   * Added extra argument to Accurate Advance:
1613     hinitial: suggested initial step size        375     hinitial: suggested initial step size
1614 - Note:                                          376 - Note:
1615   * Purpose:  performance boost with small/li << 377   * Purpose:  performance boost with small/limited changes, 
1616     including minor revisions of interfaces.     378     including minor revisions of interfaces.
1617                                                  379 
1618 Jun 20th, 2003  J.Apostolakis - field-V05-01-    380 Jun 20th, 2003  J.Apostolakis - field-V05-01-02
1619 -----------------------------                    381 -----------------------------
1620 - G4MagIntegratorDriver Quick Advance:           382 - G4MagIntegratorDriver Quick Advance:
1621   o Took out two unneccessary square roots an    383   o Took out two unneccessary square roots and two divisions.
1622 - Notes:                                         384 - Notes:
1623   1) Pure magnetic, electric, spin field test    385   1) Pure magnetic, electric, spin field test are completed.
1624   2) Purpose:  performance boost with small c    386   2) Purpose:  performance boost with small changes.
1625                                                  387 
1626 Jun 20th, 2003  J.Apostolakis - field-V05-01-    388 Jun 20th, 2003  J.Apostolakis - field-V05-01-01
1627 -----------------------------                    389 -----------------------------
1628 - G4MagIntegratorDriver:                         390 - G4MagIntegratorDriver:
1629   o Corrected neglected conversion to <std> f    391   o Corrected neglected conversion to <std> from "G4std".
1630 - Migrated unit tests to <std>.                  392 - Migrated unit tests to <std>.
1631                                                  393 
1632 Jun 19th, 2003  J.Apostolakis - field-V05-01-    394 Jun 19th, 2003  J.Apostolakis - field-V05-01-00
1633 -----------------------------                 << 395 ----------------------------- 
1634 - G4ChordFinder:                                 396 - G4ChordFinder:
1635   o Corrected simple constructor to initialis    397   o Corrected simple constructor to initialise several member variables
1636     including LastStepEstimate_Unconstrained.    398     including LastStepEstimate_Unconstrained.
1637 - G4MagIntegratorDriver:                         399 - G4MagIntegratorDriver:
1638   o Keep simple statistics on number of steps    400   o Keep simple statistics on number of steps, total error and step size.
1639   o Took out an unneccessary square root (in     401   o Took out an unneccessary square root (in loop).
1640 - NOTE:    tests field0X are to be migrated.     402 - NOTE:    tests field0X are to be migrated.
1641   Purpose: fixes, small performance boost, si    403   Purpose: fixes, small performance boost, simple statistics.
1642                                                  404 
1643 Apr 2nd, 2003      G. Cosmo - field-V05-00-01    405 Apr 2nd, 2003      G. Cosmo - field-V05-00-01
1644 ---------------------------                      406 ---------------------------
1645 - Created .cc files for G4MagneticField and G    407 - Created .cc files for G4MagneticField and G4ElecroMagneticField.
1646 - Fixed definition of copy constructors in fi    408 - Fixed definition of copy constructors in fields inheritance chain.
1647 - Moved obsolete method StepWithEst() to priv    409 - Moved obsolete method StepWithEst() to private in G4RKG3_Stepper,
1648   G4CashKarpRKF45 and G4ClassicalRK4.            410   G4CashKarpRKF45 and G4ClassicalRK4.
1649 - Cleared strict pedantic warnings.              411 - Cleared strict pedantic warnings.
1650                                                  412 
1651 Feb 5th, 2003      G. Cosmo - field-V05-00-00    413 Feb 5th, 2003      G. Cosmo - field-V05-00-00
1652 ---------------------------                      414 ---------------------------
1653 - Removed redundant inclusions of PhysicalCon    415 - Removed redundant inclusions of PhysicalConstants.h or SystemOfUnits.h.
1654   Now using directly CLHEP's headers.            416   Now using directly CLHEP's headers.
1655                                                  417 
1656 Dec 12th, 2002     G. Cosmo - field-V04-01-06    418 Dec 12th, 2002     G. Cosmo - field-V04-01-06
1657 ---------------------------                      419 ---------------------------
1658 - Moved unused variable 'nStpPr' to debug sec    420 - Moved unused variable 'nStpPr' to debug section in G4MagIntegratorDriver.cc,
1659   method AccurateAdvance().                      421   method AccurateAdvance().
1660                                                  422 
1661 Dec 06th, 2002     G. Cosmo - field-V04-01-05    423 Dec 06th, 2002     G. Cosmo - field-V04-01-05
1662 ---------------------------                      424 ---------------------------
1663 - Merged changes by Makoto for migration to n    425 - Merged changes by Makoto for migration to new G4ApplicationState in
1664   messengers of unit tests.                      426   messengers of unit tests.
1665                                                  427 
1666 Nov 29th, 2002     J. Apostolakis - field-V04    428 Nov 29th, 2002     J. Apostolakis - field-V04-01-04
1667 ---------------------------------                429 ---------------------------------
1668 Further fixes for unitialised variable - in o    430 Further fixes for unitialised variable - in other steppers:
1669 G4ExplicitEuler, G4ImplicitEuler, G4ImplicitE    431 G4ExplicitEuler, G4ImplicitEuler, G4ImplicitEuler
1670                                                  432 
1671 Large memory leak fix for G4ImplicitEuler, sm    433 Large memory leak fix for G4ImplicitEuler, small for ExplicitEuler.
1672 Test accuracy requirements for spin adjusted.    434 Test accuracy requirements for spin adjusted.
1673                                                  435 
1674 Nov 20th, 2002     J. Apostolakis - field-V04    436 Nov 20th, 2002     J. Apostolakis - field-V04-01-03
1675 ---------------------------------                437 ---------------------------------
1676 Further fixes for unitialised variables:         438 Further fixes for unitialised variables:
1677                                                  439 
1678 * G4MagIntegratorStepper                         440 * G4MagIntegratorStepper
1679   -  Created instance variables for number of    441   -  Created instance variables for number of Integration, State variables
1680                                                  442 
1681 * G4MagErrorStepper                              443 * G4MagErrorStepper
1682   -  Utilise number of State variables to ini    444   -  Utilise number of State variables to initialise full state of Output.
1683                                                  445 
1684 * G4Mag_SpinEqRhs                                446 * G4Mag_SpinEqRhs
1685   -  Initialise the values of dydx that we do    447   -  Initialise the values of dydx that we do not update.
1686                                                  448 
1687 Note: Undoing these changes and the ones belo << 449 Note: Undoing these changes and the ones below would enable the user to see 
1688         if undefined values are used in varia << 450         if undefined values are used in variables that he/she expects to 
1689         have integrated.                         451         have integrated.
1690       BUT the fix assists us to find truly un    452       BUT the fix assists us to find truly undefined values elsewhere
1691         -- if they exist -- using valgrind.      453         -- if they exist -- using valgrind.
1692                                                  454 
1693 Nov  9th, 2002     J. Apostolakis - field-V04    455 Nov  9th, 2002     J. Apostolakis - field-V04-01-02
1694 ---------------------------------                456 ---------------------------------
1695 Fixes to address use of uninitialised variabl    457 Fixes to address use of uninitialised variable in seting values of FieldTrack
1696 (this was done by design, but was neither ide    458 (this was done by design, but was neither ideal or always well-behaved.)
1697 Changed:                                         459 Changed:
1698                                                  460 
1699 * G4MagIntegratorDriver                          461 * G4MagIntegratorDriver
1700   - Added instance variables for number of In    462   - Added instance variables for number of Integration, State variables
1701   - Initialise all State variables of Output     463   - Initialise all State variables of Output with values from initial variables.
1702   - Only the Integration variables will be in    464   - Only the Integration variables will be integrated
1703                                                  465 
1704 * G4ClassicalRK4 and G4MagErrorStepper           466 * G4ClassicalRK4 and G4MagErrorStepper
1705   - Copy the initial time to intermediate and << 467   - Copy the initial time to intermediate and output C-vectors, 
1706      in order to provide a zero-eth estimate     468      in order to provide a zero-eth estimate value.
1707   Note1: Should clean-up this fix, making it     469   Note1: Should clean-up this fix, making it similar to Driver (above)
1708   Note2: Should *not* be used for time varyin << 470   Note2: Should *not* be used for time varying field unless created 
1709            with at least 8 integration variab    471            with at least 8 integration variables
1710 ---------------------------------             << 472 ---------------------------------  
1711 G4ChordFinder.cc                                 473 G4ChordFinder.cc
1712   - Correction from zero dChord                  474   - Correction from zero dChord
1713       which is does not update the Unconstrai    475       which is does not update the Unconstrained step estimate (state)
1714   - Added instance variables to store number     476   - Added instance variables to store number of calls and chord-trials
1715       and new print method for 'debugging'       477       and new print method for 'debugging'
1716                                                  478 
1717 G4Mag_UsualEqRhs.cc                              479 G4Mag_UsualEqRhs.cc
1718   - Attempted approximations for speedup  *ov    480   - Attempted approximations for speedup  *overwritten* by full inverse sqrt.
1719                                                  481 
1720                                                  482 
1721 Oct  29th, 2002   J. Apostolakis - test-V04-0    483 Oct  29th, 2002   J. Apostolakis - test-V04-01-02
1722 --------------------------------                 484 --------------------------------
1723 - Changed output of tests for small output ch    485 - Changed output of tests for small output change (GeV->MeV)
1724                                                  486 
1725 Oct  29th, 2002   J. Apostolakis - test-V04-0    487 Oct  29th, 2002   J. Apostolakis - test-V04-01-02
1726 --------------------------------                 488 --------------------------------
1727 - (Only changed and tagged test subdirectory)    489 - (Only changed and tagged test subdirectory)
1728   Changed tests to use the new method SetChar << 490   Changed tests to use the new method SetChargeMomentumMass of 
1729   PropagatorInField in order to be ready for  << 491   PropagatorInField in order to be ready for its full use in 
1730   G4PropagatorInField.                           492   G4PropagatorInField.
1731   (A key problem at end-July was this non-pre    493   (A key problem at end-July was this non-preparedness of the unit tests.)
1732                                                  494 
1733 Jul  24th, 2002   G. Cosmo - field-V04-01-01     495 Jul  24th, 2002   G. Cosmo - field-V04-01-01
1734 --------------------------                       496 --------------------------
1735 - G4FieldManager[.hh.cc]: made fDefault_Delta    497 - G4FieldManager[.hh.cc]: made fDefault_Delta_One_Step_Value and
1736   fDefault_Delta_Intersection_Val normal cons    498   fDefault_Delta_Intersection_Val normal constants (not static) to
1737   resolve initialisation problems. Coworks wi    499   resolve initialisation problems. Coworks with tag "geomvol-V04-01-01".
1738   Fixes problem report #383.                     500   Fixes problem report #383.
1739                                                  501 
1740 Jul  23rd, 2002   G. Cosmo - field-V04-01-00     502 Jul  23rd, 2002   G. Cosmo - field-V04-01-00
1741 --------------------------                       503 --------------------------
1742 - G4MagIntegratorDriver.cc: cleared warning o    504 - G4MagIntegratorDriver.cc: cleared warning of unused variable.
1743   Protected variable 'nStpPr' with G4DEBUG_FI    505   Protected variable 'nStpPr' with G4DEBUG_FIELD.
1744 - Updated reference outputs and some other up    506 - Updated reference outputs and some other updates to unit tests.
1745                                                  507 
1746 Jun  25th, 2002   J. Apostolakis - field-V04-    508 Jun  25th, 2002   J. Apostolakis - field-V04-00-05
1747 --------------------------------                 509 --------------------------------
1748 - G4ChordFinder.cc                               510 - G4ChordFinder.cc
1749   In NewStep:  fixed case of stepTrial >> ste    511   In NewStep:  fixed case of stepTrial >> stepTrialOld, to take large multiple - not small;
1750        (it was treated the same as stepTrial     512        (it was treated the same as stepTrial << old)
1751   Added guard for stepTrial==0.0 in FindNextC    513   Added guard for stepTrial==0.0 in FindNextChord
1752 - G4MagIntegratorDriver.cc                       514 - G4MagIntegratorDriver.cc
1753   Added protection against error of 0.0 in Co    515   Added protection against error of 0.0 in ComputeNewStepSize.
1754                                                  516 
1755 - G4EquationOfMotion                             517 - G4EquationOfMotion
1756   Made RightHandSide an inline method         << 518   Made RightHandSide an inline method 
1757   In GetFieldValue signature of Point is doub    519   In GetFieldValue signature of Point is double[4], instead of double[3]
1758   Defined G4maximum_number_of_field_component    520   Defined G4maximum_number_of_field_components as enum
1759                                                  521 
1760 Jun   7th, 2002   J. Apostolakis - field-V04-    522 Jun   7th, 2002   J. Apostolakis - field-V04-00-04
1761 --------------------------------                 523 --------------------------------
1762  - G4Mag_SpinEqRhs.cc                            524  - G4Mag_SpinEqRhs.cc
1763     o Fix to momentum component of Rhs.          525     o Fix to momentum component of Rhs.
1764                                                  526 
1765 May  31st, 2002   J. Apostolakis - field-V04-    527 May  31st, 2002   J. Apostolakis - field-V04-00-03
1766 --------------------------------                 528 --------------------------------
1767  - G4MagHelicalStepper.icc                       529  - G4MagHelicalStepper.icc
1768     o Fix to LinearStep (correcting previous     530     o Fix to LinearStep (correcting previous fix/cosmetic)
1769  - G4ChordFinder.cc                              531  - G4ChordFinder.cc
1770     o Corrective behaviour for very small or     532     o Corrective behaviour for very small or large changes of 'new step'
1771        [observed in complex 3-d fields (purgi    533        [observed in complex 3-d fields (purging magnet),  or
1772                     approximate equations of     534                     approximate equations of motion ]
1773  - G4MagIntegratorDriver                         535  - G4MagIntegratorDriver
1774     o More information in debug printing (tan    536     o More information in debug printing (tangent cosine, norm)
1775                                                  537 
1776 May   7th, 2002   J. Apostolakis                 538 May   7th, 2002   J. Apostolakis
1777 --------------------------------                 539 --------------------------------
1778 - G4MagIntegratorDriver  -  ( on trunk )         540 - G4MagIntegratorDriver  -  ( on trunk )
1779   * Fix to update the field track for steps s << 541   * Fix to update the field track for steps smaller than the chord finder's 
1780 minstep.                                      << 542 minstep. 
1781                                                  543 
1782                                                  544 
1783 April 19th, 2002  J. Apostolakis   (not inclu    545 April 19th, 2002  J. Apostolakis   (not included in tag field-V04-00-02)
1784 --------------------------------                 546 --------------------------------
1785 - G4MagIntegratorDriver.hh,cc     (on trunk)     547 - G4MagIntegratorDriver.hh,cc     (on trunk)
1786   * Bug fix:  last step can now only be trigg    548   * Bug fix:  last step can now only be triggerred if x+h > x2.
1787   * Debugging methods improved.                  549   * Debugging methods improved.
1788                                                  550 
1789 May   7th, 2002   J. Apostolakis - field-V04-    551 May   7th, 2002   J. Apostolakis - field-V04-00-02
1790 --------------------------------                 552 --------------------------------
1791  Tag including only two changes below:           553  Tag including only two changes below:
1792   - Putting aside the other fixes/changes (as << 554   - Putting aside the other fixes/changes (as the one above) to 
1793 G4MagIntegratorDriver, tagging only the fix t << 555 G4MagIntegratorDriver, tagging only the fix to update the field track 
1794 for steps smaller than the chord finder's min    556 for steps smaller than the chord finder's minstep.
1795                                                  557 
1796 May   7th, 2002   J. Apostolakis                 558 May   7th, 2002   J. Apostolakis
1797 --------------------------------                 559 --------------------------------
1798 - G4MagIntegratorDriver  -  **  branch ** on     560 - G4MagIntegratorDriver  -  **  branch ** on 1.20 **
1799   * Fix to update the field track for steps s << 561   * Fix to update the field track for steps smaller than the chord finder's 
1800 minstep.                                      << 562 minstep. 
1801                                                  563 
1802 May   7th, 2002   J. Apostolakis                 564 May   7th, 2002   J. Apostolakis
1803 --------------------------------                 565 --------------------------------
1804 - G4MagIntegratorStepper                         566 - G4MagIntegratorStepper
1805   * Changed RightHandSide from a virtual meth << 567   * Changed RightHandSide from a virtual method to an inline (non-virtual) 
1806       method -- it is not and should not be c    568       method -- it is not and should not be changed by derived classes.
1807                                                  569 
1808 Mar 28th, 2002  J. Apostolakis - field-V04-00    570 Mar 28th, 2002  J. Apostolakis - field-V04-00-01
1809 -----------------------                          571 -----------------------
1810 - Fixed LinearStep in G4MagHelicalStepper (ex << 572 - Fixed LinearStep in G4MagHelicalStepper (expected unit direction), 
1811     that had not been updated for new integra    573     that had not been updated for new integration variable (momentum).
1812     --> found in testing helical steppers in  << 574     --> found in testing helical steppers in BaBar setup, 
1813          in region of negligible field.          575          in region of negligible field.
1814                                                  576 
1815 - Changed maximum number of steps in driver,  << 577 - Changed maximum number of steps in driver, 
1816     halving from 500/order to 250/order.         578     halving from 500/order to 250/order.
1817                                                  579 
1818 Mar 28th, 2002  J. Apostolakis                   580 Mar 28th, 2002  J. Apostolakis
1819 -----------------------                          581 -----------------------
1820 - Committed directory "OtherField" with examp    582 - Committed directory "OtherField" with examples of fields,
1821     Delphi, Quadropole etc.                      583     Delphi, Quadropole etc.
1822                                                  584 
1823 - Updated outputs of testPropagateMagField fo    585 - Updated outputs of testPropagateMagField for new version of source,
1824     that has 3rd test case.                      586     that has 3rd test case.
1825                                                  587 
1826 - Added new runs and outputs for testProElect << 588 - Added new runs and outputs for testProElectroMagField, with 
1827     several steppers, and modified test scrip    589     several steppers, and modified test script test.sh accordingly.
1828                                                  590 
1829                                                  591 
1830 Feb  2nd, 2002   V. Grichine                     592 Feb  2nd, 2002   V. Grichine
1831 ------------------------                         593 ------------------------
1832 Update of test/field02 to utilise new feature << 594 Update of test/field02 to utilise new features 
1833   - for Electric Field, to signal that a fiel    595   - for Electric Field, to signal that a field modifies the energy;
1834   - updating of time by integration, for time    596   - updating of time by integration, for time dependent fields.
1835                                                  597 
1836 Jan 10th, 2002  G. Cosmo - field-V04-00-00       598 Jan 10th, 2002  G. Cosmo - field-V04-00-00
1837 ------------------------                         599 ------------------------
1838 - Activated G4DEBUG_FIELD in GNUmakefile.        600 - Activated G4DEBUG_FIELD in GNUmakefile.
1839                                                  601 
1840 Jan 7th, 2002  J. Apostolakis                    602 Jan 7th, 2002  J. Apostolakis
1841 -----------------------------                    603 -----------------------------
1842 - G4MagHelicalStepper.cc: renamed local varia    604 - G4MagHelicalStepper.cc: renamed local variables "*Momentum*" to "*Velocity*".
1843                                                  605 
1844 Dec 4th, 2001  G. Cosmo - field-V03-02-08        606 Dec 4th, 2001  G. Cosmo - field-V03-02-08
1845 -----------------------                          607 -----------------------
1846 - Fixed interface to virtual functions in the    608 - Fixed interface to virtual functions in the inheritance chain.
1847   Added 'virtual' qualifier to destructor and    609   Added 'virtual' qualifier to destructor and GetFieldValue() for subclasses
1848   of G4Field which may act as base class for     610   of G4Field which may act as base class for user-defined fields.
1849   Modified files: G4MagneticField.hh, G4Unifo    611   Modified files: G4MagneticField.hh, G4UniformElectricField[.hh.cc],
1850                   G4UniformMagField.hh.          612                   G4UniformMagField.hh.
1851 - G4ChordFinder.cc: the unphysical curve leng    613 - G4ChordFinder.cc: the unphysical curve length exception has been moved to
1852   inside #ifdef G4DEBUG_FIELD. Other #ifdef r    614   inside #ifdef G4DEBUG_FIELD. Other #ifdef renamed to G4DEBUG_FIELD.
1853 - G4LineSection[.hh.cc]: correction for A=B w    615 - G4LineSection[.hh.cc]: correction for A=B when the distance from P to A
1854   is returned (V.Grichine).                      616   is returned (V.Grichine).
1855                                                  617 
1856 Nov 28th, 2001  J. Apostolakis - field-V03-02    618 Nov 28th, 2001  J. Apostolakis - field-V03-02-07
1857 ------------------------------                   619 ------------------------------
1858 G4FieldManager                                   620 G4FieldManager
1859 - Added fFieldChangesEnergy data member and g    621 - Added fFieldChangesEnergy data member and get/set methods
1860  ( required to allow transportation to know h    622  ( required to allow transportation to know how to calculate end-time,
1861    enabling the integration of time only for     623    enabling the integration of time only for electric fields. )
1862                                                  624 
1863 Nov 28th, 2001  J. Apostolakis - field-V03-02    625 Nov 28th, 2001  J. Apostolakis - field-V03-02-06
1864 ------------------------------                   626 ------------------------------
1865 Small fixes only:                                627 Small fixes only:
1866                                                  628 
1867 G4CashKarpRKF45                                  629 G4CashKarpRKF45
1868 - fixed deletion of unassigned pointer/array     630 - fixed deletion of unassigned pointer/array in destructor. (-> Volodya Velev)
1869                                                  631 
1870 G4EqMagElectricField                             632 G4EqMagElectricField
1871 - bug fixed in the formula for inverse veloci    633 - bug fixed in the formula for inverse velocity             (-> V. Grichine)
1872                                                  634 
1873 Nov 21st, 2001  G. Cosmo - field-V03-02-05       635 Nov 21st, 2001  G. Cosmo - field-V03-02-05
1874 ------------------------                         636 ------------------------
1875 - Protected verbose warnings with G4FIELD_DEB    637 - Protected verbose warnings with G4FIELD_DEBUG flag in G4ChordFinder.cc
1876   (V.Grichine).                                  638   (V.Grichine).
1877 - Replaced G4DEBUG with G4DEBUG_FIELD in G4Ma    639 - Replaced G4DEBUG with G4DEBUG_FIELD in G4MagIntegratorDriver.cc.
1878 - Updates to unit test field02.                  640 - Updates to unit test field02.
1879                                                  641 
1880 Nov 13th, 2001  G. Cosmo - field-V03-02-04       642 Nov 13th, 2001  G. Cosmo - field-V03-02-04
1881 ------------------------                         643 ------------------------
1882 - Removed warnings on gcc-2.95.2.                644 - Removed warnings on gcc-2.95.2.
1883 - Included unit tests field01, field02, field    645 - Included unit tests field01, field02, field03.
1884                                                  646 
1885 Nov 9th, 2001  J. Apostolakis - field-V03-02-    647 Nov 9th, 2001  J. Apostolakis - field-V03-02-03
1886 -----------------------------                    648 -----------------------------
1887 Motivated by the use case of an Electric Fiel    649 Motivated by the use case of an Electric Field,
1888  - in order to achieve reasonable accuracy in    650  - in order to achieve reasonable accuracy in time integration,
1889  - and to enable fields that vary with the gl    651  - and to enable fields that vary with the global time)
1890 we (John Ap. and V. Grichine) changed the fol    652 we (John Ap. and V. Grichine) changed the following:
1891                                                  653 
1892 - Modified G4Field to allow the time in the G << 654 - Modified G4Field to allow the time in the GetFieldValue method 
1893      - as 4th component of the "position" arr    655      - as 4th component of the "position" array.
1894                                                  656 
1895 - Modified EquationOfMotion to provide the ti    657 - Modified EquationOfMotion to provide the time to the GetFieldValue method
1896    of G4Field                                    658    of G4Field
1897       * as the 4th component of a position /     659       * as the 4th component of a position / time  4-array
1898       * in place of only position as a 3-arry    660       * in place of only position as a 3-arry
1899                                                  661 
1900 - Added the global time as variable to be int << 662 - Added the global time as variable to be integrated over in the 
1901    case of an Electric Field                     663    case of an Electric Field
1902                                                  664 
1903 Support for these modifications is required i    665 Support for these modifications is required in G4Transportation.
1904                                                  666 
1905 (Better support will require either              667 (Better support will require either
1906  - a modification in G4FieldTrack to indicate    668  - a modification in G4FieldTrack to indicate whether the time has been
1907     integrated or not.                        << 669     integrated or not.  
1908  - or additionally making the time calculatio    670  - or additionally making the time calculation a property of G4FieldTrack,
1909     bring in code to do it in from G4Transpor    671     bring in code to do it in from G4Transportation.)
1910                                                  672 
1911                                                  673 
1912 Nov  8th, 2001  J. Apostolakis - field-V03-02    674 Nov  8th, 2001  J. Apostolakis - field-V03-02-02
1913 ------------------------                         675 ------------------------
1914 - Introduced several changes in G4MagIntegrat    676 - Introduced several changes in G4MagIntegratorDriver.
1915                                                  677 
1916    It now respects its minimum driver step si    678    It now respects its minimum driver step size in AccurateAdvance.
1917      * whereas before it did not.                679      * whereas before it did not.
1918                                                  680 
1919    Modified maximum number of steps, lowering    681    Modified maximum number of steps, lowering by factor of 10.
1920      -> it should reduce the time spent integ    682      -> it should reduce the time spent integrating low energy particles,
1921    in some cases where it is unneccessary.       683    in some cases where it is unneccessary.
1922                                                  684 
1923    Protected printing of (nearly?) all warnin    685    Protected printing of (nearly?) all warnings with a G4DEBUG_FIELD  #ifdef.
1924                                                  686 
1925                                                  687 
1926 Nov 05th, 2001  G. Cosmo - field-V03-02-01       688 Nov 05th, 2001  G. Cosmo - field-V03-02-01
1927 ------------------------                         689 ------------------------
1928 - Fixed trivial warnings on Linux-g++.           690 - Fixed trivial warnings on Linux-g++.
1929                                                  691 
1930 Aug 27th, 2001  J. Apostolakis - field-V03-02    692 Aug 27th, 2001  J. Apostolakis - field-V03-02-00
1931 ------------------------------                   693 ------------------------------
1932 Tagged last change.                              694 Tagged last change.
1933 This tag is utilised in transport-V03-02-01 (    695 This tag is utilised in transport-V03-02-01 (which requires it).
1934                                                  696 
1935 Aug 16th, 2001  J. Apostolakis                   697 Aug 16th, 2001  J. Apostolakis
1936 ------------------------------                   698 ------------------------------
1937 G4ChordFinder:                                   699 G4ChordFinder:
1938  Added method to erase/reset the state of the    700  Added method to erase/reset the state of the StepEstimate.
1939  This is unwanted internal state that was car    701  This is unwanted internal state that was carried between tracks and
1940      events as a side effect.                    702      events as a side effect.
1941                                                  703 
1942  Calling this at the start of each track, it     704  Calling this at the start of each track, it is now possible to
1943  eliminate a non-repeatability that was possi    705  eliminate a non-repeatability that was possible due to this.
1944     ( It has been observed in particular in v    706     ( It has been observed in particular in vaccuum. )
1945                                                  707 
1946 May 23rd, 2001  J. Apostolakis - field-V03-01    708 May 23rd, 2001  J. Apostolakis - field-V03-01-02
1947 ------------------------------                   709 ------------------------------
1948 - Added Exception to G4RKG3Stepper constructo    710 - Added Exception to G4RKG3Stepper constructor: the class does not work
1949                                                  711 
1950 May 23rd, 2001  J. Apostolakis - field-V03-01    712 May 23rd, 2001  J. Apostolakis - field-V03-01-01
1951 ------------------------------                   713 ------------------------------
1952 - Fixed G4FieldManager constructors to give d    714 - Fixed G4FieldManager constructors to give default values to delta
1953   parameters.                                    715   parameters.
1954                                                  716 
1955 - Updated testPropagateSpin (it now compiles) << 717 - Updated testPropagateSpin (it now compiles), 
1956    and some outputs of testPropagateMagField     718    and some outputs of testPropagateMagField (1 to 5)
1957                                                  719 
1958                                                  720 
1959 Apr 12th, 2001  P. Gumplinger - field-V03-01-    721 Apr 12th, 2001  P. Gumplinger - field-V03-01-00
1960 -----------------------------                    722 -----------------------------
1961 - Updated G4Mag_SpinEqRhs.hh and G4Mag_SpinEq    723 - Updated G4Mag_SpinEqRhs.hh and G4Mag_SpinEqRhs.cc for correction
1962   to spin tracking.                              724   to spin tracking.
1963                                                  725 
1964 Apr 04th, 2001  G. Cosmo - field-V03-00-05       726 Apr 04th, 2001  G. Cosmo - field-V03-00-05
1965 ------------------------                         727 ------------------------
1966 - G4FieldTrack.icc: fixed pedantic warnings o    728 - G4FieldTrack.icc: fixed pedantic warnings on Linux-g++.
1967                                                  729 
1968 Mar 23rd, 2001  J. Apostolakis - field-V03-00    730 Mar 23rd, 2001  J. Apostolakis - field-V03-00-04
1969 ------------------------------                   731 ------------------------------
1970 - Electric Field unit test now works: test ru    732 - Electric Field unit test now works: test runs until completion.
1971    Test outputs saved (on Linux).                733    Test outputs saved (on Linux).
1972                                                  734 
1973 - Fixed src/G4UniformElectricField.cc to set     735 - Fixed src/G4UniformElectricField.cc to set correct field components
1974                                       (compat    736                                       (compatible with Equation of Motion
1975                                        G4EqMa    737                                        G4EqMagElectricField )
1976                                                  738 
1977 - Tidied G4FieldTrack                            739 - Tidied G4FieldTrack
1978    * deleted obsolete methods Set/Get Momentu    740    * deleted obsolete methods Set/Get MomentumModulus() and its data member.
1979    * in constructor to set the value of the s << 741    * in constructor to set the value of the spin to (0.0, 0.0, 0.0) 
1980           if pSpin is null.  (It was undefine    742           if pSpin is null.  (It was undefined.)
1981                                                  743 
1982 Mar 23rd, 2001  J. Apostolakis - field-V03-00    744 Mar 23rd, 2001  J. Apostolakis - field-V03-00-03
1983 ------------------------------                   745 ------------------------------
1984 - Fixed (hacked) CashKarp to work using Auxil << 746 - Fixed (hacked) CashKarp to work using Auxiliary Stepper.   
1985                                                  747 
1986 - Modified G4MagIntegratorStepper             << 748 - Modified G4MagIntegratorStepper 
1987      to use pointer to G4EquationOfMotion        749      to use pointer to G4EquationOfMotion
1988             instead of G4Mag_EqRhs               750             instead of G4Mag_EqRhs
1989                                                  751 
1990 - Design iteration appears neccessary            752 - Design iteration appears neccessary
1991                                                  753 
1992 Mar 23rd, 2001  J. Apostolakis - field-V03-00    754 Mar 23rd, 2001  J. Apostolakis - field-V03-00-02
1993 ------------------------------                   755 ------------------------------
1994 - Fixed G4MagHelicalStepper::AdvanceHelix for    756 - Fixed G4MagHelicalStepper::AdvanceHelix for momentum, allowing
1995     the possibility of (correct) use of all H << 757     the possibility of (correct) use of all Helical Steppers. 
1996                                                  758 
1997 - test/testProElectroMagField.cc updated for     759 - test/testProElectroMagField.cc updated for momentum.
1998     (Not yet updated: Spin tests)                760     (Not yet updated: Spin tests)
1999                                                  761 
2000                                                  762 
2001 Mar 19th, 2001  J. Apostolakis - field-V03-00    763 Mar 19th, 2001  J. Apostolakis - field-V03-00-01
2002 ------------------------------                   764 ------------------------------
2003 - Tagging the modification of several classes    765 - Tagging the modification of several classes to integrate in momentum*c_light
2004     instead of velocity.                      << 766     instead of velocity.  
2005   Reason for change:  Velocity integration ca    767   Reason for change:  Velocity integration can result in superluminar
2006     velocities,  due to arithmetic inaccuraci    768     velocities,  due to arithmetic inaccuracies.
2007   Classes modified:                           << 769   Classes modified: 
2008     G4FieldTrack,   (Changed components 3,4,5    770     G4FieldTrack,   (Changed components 3,4,5 of SixVector to Momentum,
2009     G4Mag_EqRhs, G4Mag_UsualEqRhs, G4EqMagEle    771     G4Mag_EqRhs, G4Mag_UsualEqRhs, G4EqMagElectricField
2010                                                  772 
2011 Feb 20th, 2001  J. Apostolakis                << 773 Feb 20th, 2001  J. Apostolakis 
2012                                                  774 
2013 - Modified several classes to integrate in mo    775 - Modified several classes to integrate in momentum instead of velocity.
2014                                                  776 
2015  G4FieldTrack:                                   777  G4FieldTrack:
2016      Changed components 3,4,5 of SixVector to    778      Changed components 3,4,5 of SixVector to Momentum,
2017      Modified constructor                        779      Modified constructor
2018      Added energy calculation to "LoadFromArr    780      Added energy calculation to "LoadFromArray" method
2019      GetEnergy method is now implemented.     << 781      GetEnergy method is now implemented. 
2020      Deleted obsolete (old) method names for     782      Deleted obsolete (old) method names for Curve and Position. New have "Get"
2021                                                  783 
2022  G4ChordFinder                                   784  G4ChordFinder
2023      Renamed old-method names of Field Track  << 785      Renamed old-method names of Field Track to new ones. 
2024                                                  786 
2025 Jan 29th, 2001  G. Cosmo - field-V03-00-00       787 Jan 29th, 2001  G. Cosmo - field-V03-00-00
2026 -------------------------                        788 -------------------------
2027                                                  789 
2028 - Minor fix to G4MagneticField.hh: added expl    790 - Minor fix to G4MagneticField.hh: added explicit call to G4Field() in
2029   copy constructor. Fixes report #205.           791   copy constructor. Fixes report #205.
2030                                                  792 
2031 Nov 20th, 2000  G. Cosmo - field-V02-00-02       793 Nov 20th, 2000  G. Cosmo - field-V02-00-02
2032                                                  794 
2033 - Fixes to remove warnings from "-Wall -ansi     795 - Fixes to remove warnings from "-Wall -ansi -pedantic" g++ compiler options:
2034   o commented out variables declared and not     796   o commented out variables declared and not used.
2035   o fixed declaration of variables used befor    797   o fixed declaration of variables used before being initialised.
2036   o fixed order of initialisation of member d    798   o fixed order of initialisation of member data in constructors.
2037   o fixed usage of unsigned-int (size_t) for     799   o fixed usage of unsigned-int (size_t) for array indeces.
2038                                                  800 
2039 Nov 9th, 2000  G. Cosmo - field-V02-00-01        801 Nov 9th, 2000  G. Cosmo - field-V02-00-01
2040                                                  802 
2041 - G4FieldManager: added check on existence of    803 - G4FieldManager: added check on existence of allocated fChordFinder
2042   in CreateChordFinder(G4MagneticField*) meth    804   in CreateChordFinder(G4MagneticField*) method.
2043                                                  805 
2044 Nov 1st, 2000  G. Cosmo - field-V02-00-00        806 Nov 1st, 2000  G. Cosmo - field-V02-00-00
2045                                                  807 
2046 - QA code revision and cleanup (+fixes from C    808 - QA code revision and cleanup (+fixes from CodeWizard filtering):
2047   o Added (private) declarations of copy cons    809   o Added (private) declarations of copy constructor and assignment operator
2048     where needed.                                810     where needed.
2049   o Added "const" qualifier to accessor metho    811   o Added "const" qualifier to accessor methods, wherever needed.
2050   o Added equality check on operator= where n    812   o Added equality check on operator= where needed.
2051   o Made destructor "virtual" for classes hav    813   o Made destructor "virtual" for classes having virtual methods,
2052     wherever missing.                            814     wherever missing.
2053   o Changed virtual functions to non-inline w    815   o Changed virtual functions to non-inline wherever's the case.
2054   o Changed return value to be "const" pointe    816   o Changed return value to be "const" pointer to functions:
2055     - G4EquationOfMotion::GetFieldObj()          817     - G4EquationOfMotion::GetFieldObj()
2056     - G4FieldManager::GetDetectorField()         818     - G4FieldManager::GetDetectorField()
2057     - G4MagIntegratorDriver::GetStepper()        819     - G4MagIntegratorDriver::GetStepper()
2058   o Fixed and corrected signature to G4MagInt    820   o Fixed and corrected signature to G4MagIntegratorDriver::SetHmin().
2059   o Added "inline" qualifier to methods' decl    821   o Added "inline" qualifier to methods' declarations.
2060   o General cosmetics                            822   o General cosmetics
2061                                                  823 
2062 Jun 2nd, 2000  J. Apostolakis                    824 Jun 2nd, 2000  J. Apostolakis
2063 - G4FieldManager[.hh.icc]                        825 - G4FieldManager[.hh.icc]
2064   o Added DeltaIntersection and DeltaOneStep     826   o Added DeltaIntersection and DeltaOneStep to FieldManager: added
2065     Get/Set methods and SetAccuraciesWithDelt    827     Get/Set methods and SetAccuraciesWithDeltaOneStep().
2066                                                  828 
2067 May 31st, 2000  J. Apostolakis - field-V01-01    829 May 31st, 2000  J. Apostolakis - field-V01-01-03
2068                                                  830 
2069 include/G4FieldManager.hh,icc                    831 include/G4FieldManager.hh,icc
2070   o Moved Delta Intersection and Delta One St    832   o Moved Delta Intersection and Delta One Step to FieldManager
2071      (from Propagator in Field),  to allow th    833      (from Propagator in Field),  to allow them to differ over the detector.
2072                                                  834 
2073 May 11th, 2000  J. Apostolakis - field-V01-01    835 May 11th, 2000  J. Apostolakis - field-V01-01-02
2074                                                  836 
2075 - G4ChordFinder[.hh.cc]                          837 - G4ChordFinder[.hh.cc]
2076   o Modified method for finding new trial ste    838   o Modified method for finding new trial step.
2077     New method assumes a quadratic relationsh    839     New method assumes a quadratic relationship between step-length and d_chord:
2078             d_chord  proportional  to  step-l    840             d_chord  proportional  to  step-lenght ^ 2
2079   o Added two small refinement in order to av    841   o Added two small refinement in order to avoid unneccesary extra step due to
2080     small numerical inaccuracies in estimatio    842     small numerical inaccuracies in estimation:
2081       FindNextChord                              843       FindNextChord
2082           to first step       use  (1-0.001)     844           to first step       use  (1-0.001) * last-step-estimate
2083       New Step:                                  845       New Step:
2084           to subsequent step  use    trial_st    846           to subsequent step  use    trial_step = 0.98 * estimate
2085                                                  847 
2086 May 10th, 2000  G. Cosmo                         848 May 10th, 2000  G. Cosmo
2087                                                  849 
2088 - G4MagneticField.hh: minor fix to dummy impl    850 - G4MagneticField.hh: minor fix to dummy implementation of assignment
2089   operator.                                      851   operator.
2090                                                  852 
2091 May    9th, 2000   J. Apostolakis - field-V01    853 May    9th, 2000   J. Apostolakis - field-V01-01-01
2092                                                  854 
2093 - G4MagErrorStepper:                          << 855 - G4MagErrorStepper: 
2094     Modified DistChord to check whether the c    856     Modified DistChord to check whether the chord endpoint are the same point.
2095                                                  857 
2096 - G4RKG3_Stepper:                                858 - G4RKG3_Stepper:
2097     Deleted error message from StepNoErr, as     859     Deleted error message from StepNoErr, as it is used in Stepper.
2098                                                  860 
2099 - G4MagIntegratorDriver:                         861 - G4MagIntegratorDriver:
2100     Changed the condition for the debug outpu    862     Changed the condition for the debug output  (~cosmetic)
2101                                                  863 
2102                                                  864 
2103 April 27th, 2000   G. Cosmo                      865 April 27th, 2000   G. Cosmo
2104                                                  866 
2105 - Reorganised comments for the Software Refer    867 - Reorganised comments for the Software Reference Manual.
2106 - Moved inlined definition to .icc files, whe    868 - Moved inlined definition to .icc files, where needed.
2107   Created: G4ChordFinder.icc and G4FieldManag    869   Created: G4ChordFinder.icc and G4FieldManager.icc.
2108                                                  870 
2109 April 13th, 2000   J. Apostolakis - field-V01    871 April 13th, 2000   J. Apostolakis - field-V01-01-00
2110                                                  872 
2111 - Modified signature to function DumbStepper(    873 - Modified signature to function DumbStepper() in classes:
2112   G4HelixExplicitEuler, G4HelixHeum, G4HelixI    874   G4HelixExplicitEuler, G4HelixHeum, G4HelixImplicitEuler,
2113   G4HelixSimpleRunge and G4MagHelicalStepper.    875   G4HelixSimpleRunge and G4MagHelicalStepper.
2114 - Modified signature and implementation of fu    876 - Modified signature and implementation of function MagFieldEvaluate()
2115   in G4MagHelicalStepper, to use Field (as Th    877   in G4MagHelicalStepper, to use Field (as ThreeVector) in place of dydx.
2116 - Made Richardson extrapolation optional (it     878 - Made Richardson extrapolation optional (it is unclear if
2117   it offers benefit) in G4MagHelicalStepper.     879   it offers benefit) in G4MagHelicalStepper.
2118 - Updated unit test testPropagateMagField and    880 - Updated unit test testPropagateMagField and reference output.
2119 - G4LineSection: fixes to prevent divisions b    881 - G4LineSection: fixes to prevent divisions by 0. and sqrt(<0)
2120   (V.Grichine).                                  882   (V.Grichine).
2121                                                  883 
2122 January  19th, 2000   G. Cosmo - field-V01-00    884 January  19th, 2000   G. Cosmo - field-V01-00-00
2123                                                  885 
2124 Syncronized versioning of files with HEAD aft    886 Syncronized versioning of files with HEAD after ISO-C++ migration
2125 (essentially CVS header changes).                887 (essentially CVS header changes).
2126                                                  888 
2127 December  7th, 1999   J. Apostolakis - field-    889 December  7th, 1999   J. Apostolakis - field-V00-01-01a
2128                                                  890 
2129 For negative or very small curve lengths (h)     891 For negative or very small curve lengths (h) we suppress writing an error
2130 (about the distance of endpoints being furthe    892 (about the distance of endpoints being further than the curve length),
2131 as it is meaningless.                            893 as it is meaningless.
2132                                                  894 
2133 November 23rd, 1999   J. Apostolakis - field-    895 November 23rd, 1999   J. Apostolakis - field-V00-01-01
2134                                                  896 
2135 Tagged this sub-category's state in geometry-    897 Tagged this sub-category's state in geometry-V00-01-01
2136                                                  898 
2137                                                  899 
2138 July      6th, 1999   J. Apostolakis - field-    900 July      6th, 1999   J. Apostolakis - field-01-00-07
2139                                                  901 
2140 These fixes and those in field-01-00-06 and f    902 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    903 from the need to cope with the imprecision of the integration, and its
2142 interaction with paths that are rather straig << 904 interaction with paths that are rather straight. 
2143                                                  905 
2144 G4MagIntegrationDriver:                       << 906 G4MagIntegrationDriver: 
2145  i) AccurateAdvance now that the chord distan    907  i) AccurateAdvance now that the chord distance is smaller than the curve len-
2146 gth (times 1+epsilon).                           908 gth (times 1+epsilon).
2147                                                  909 
2148 ii) OneGoodStep and QuickAdvance considers th    910 ii) OneGoodStep and QuickAdvance considers the error of the velocity as well as
2149 the error of the position - and ensure that b    911 the error of the position - and ensure that both relative errors are within
2150 the "eps" maximum given.                         912 the "eps" maximum given.
2151                                                  913 
2152 G4ChordFinder:                                   914 G4ChordFinder:
2153   Having found that the curve_length vs ABdis    915   Having found that the curve_length vs ABdist disrepancy has its basis in
2154 the imprecision of the integration:              916 the imprecision of the integration:
2155   i) Modified the exception in this case to h    917   i) Modified the exception in this case to happen only for very large
2156    relative disrepancies ( 10 * eps ).           918    relative disrepancies ( 10 * eps ).
2157  ii) Undertaken a default corrective action i    919  ii) Undertaken a default corrective action in all other cases
2158 Note that this disrepancy only happens for ve    920 Note that this disrepancy only happens for very straight sections of track -
2159 ie step lengths much smaller than the curvatu    921 ie step lengths much smaller than the curvature of the track.
2160                                                  922 
2161 July      1st, 1999   J. Apostolakis - field-    923 July      1st, 1999   J. Apostolakis - field-01-00-06a
2162                                                  924 
2163 In order to cope with the anomalous condition    925 In order to cope with the anomalous condition created by candidate fix
2164 in G4PropagatorInField,  we ensure that the f    926 in G4PropagatorInField,  we ensure that the fraction_AE is always between
2165 0 and 1.0.  (giving it a default value of 0.5    927 0 and 1.0.  (giving it a default value of 0.5 whenever it is wrong).
2166 ( in G4ChordFinder::ApproxCurvePointV )          928 ( in G4ChordFinder::ApproxCurvePointV )
2167                                                  929 
2168 June     29th, 1999   J. Apostolakis - field-    930 June     29th, 1999   J. Apostolakis - field-01-00-06
2169                                                  931 
2170   I re-instated a check on whether the input     932   I re-instated a check on whether the input distance along the curve between
2171 the two input curve points is truly greater t    933 the two input curve points is truly greater than their linear distance.
2172 ( in G4ChordFinder::ApproxCurvePointV )          934 ( in G4ChordFinder::ApproxCurvePointV )
2173                                                  935 
2174 The condition that prints out a warning messa    936 The condition that prints out a warning message has been altered to
2175 take into account the case of a very small fi << 937 take into account the case of a very small final interval. 
2176 ( in G4MagInt_Driver::AccurateAdvance )          938 ( in G4MagInt_Driver::AccurateAdvance )
2177                                                  939 
2178 June     ??th, 1999   J. Apostolakis - field-    940 June     ??th, 1999   J. Apostolakis - field-01-00-05
2179                                                  941 
2180 The condition that prints out a warning messa << 942 The condition that prints out a warning message was changed to delete 
2181 an incorrect comparison.                      << 943 an incorrect comparison. 
2182 ( in G4MagInt_Driver::AccurateAdvance )          944 ( in G4MagInt_Driver::AccurateAdvance )
2183                                                  945 
2184 April    19th, 1999   J. Apostolakis - field-    946 April    19th, 1999   J. Apostolakis - field-01-00-04
2185                                                  947 
2186 G4MagErrorStepper: Cosmetic changes to name o    948 G4MagErrorStepper: Cosmetic changes to name of data members
2187                                                  949 
2188 March     4th, 1999   J. Apostolakis - field-    950 March     4th, 1999   J. Apostolakis - field-01-00-03
2189                                                  951 
2190 Corrected delete statement of arrays to use '    952 Corrected delete statement of arrays to use 'delete[]' instead of simple delete
2191 in destructors of 2 steppers (G4CashKarpRKF45    953 in destructors of 2 steppers (G4CashKarpRKF45, G4SimpleHeum)
2192                                                  954 
2193 February 17th, 1999   J. Apostolakis -  field    955 February 17th, 1999   J. Apostolakis -  field-01-00-02
2194                                                  956 
2195  Moved G4PropagatorInField files to geometry/ << 957  Moved G4PropagatorInField files to geometry/volumes. 
2196  Updated GNUmakefile not to depend on geometr    958  Updated GNUmakefile not to depend on geometry/volumes anymore.
2197    -> the known circular dependency is remove    959    -> the known circular dependency is removed
2198                                                  960 
2199                                                  961 
2200 February 12th, 1999   J. Apostolakis -  field    962 February 12th, 1999   J. Apostolakis -  field-spin1-works1     (act Feb17)
2201                                                  963 
2202   A tag that contains the first version that     964   A tag that contains the first version that worked with spin (in Peter G.'s
2203 directory).   G4PropagateInSpin is still in t    965 directory).   G4PropagateInSpin is still in this version.  A small change
2204 in a branch of the header file was needed.    << 966 in a branch of the header file was needed. 
2205                                                  967 
2206                                                  968 
2207 February 10th, 1999   J. Apostolakis          << 969 February 10th, 1999   J. Apostolakis 
2208                                                  970 
2209 All the following changes are needed for ener    971 All the following changes are needed for energy integration also:
2210                                                  972 
2211 G4ChordFinder now passes to the constructed d    973 G4ChordFinder now passes to the constructed driver the number of variables.
2212 Because of the need for the stepper to know a    974 Because of the need for the stepper to know about it in its Abstract interface
2213                                                  975 
2214 -> Moved theNumberOfVariables  from derived c    976 -> Moved theNumberOfVariables  from derived class G4MagErrorStepper
2215                                to base class     977                                to base class G4MagIntegratorStepper
2216                                                  978 
2217 As a consequense the classes that derived fro    979 As a consequense the classes that derived from G4MagIntegratorStepper directly
2218 were changed: G4CashKarpRKF45, G4MagHelicalSt << 980 were changed: G4CashKarpRKF45, G4MagHelicalStepper, 
2219                                                  981 
2220                                                  982 
2221 February  9th, 1999    J. Apostolakis            983 February  9th, 1999    J. Apostolakis
2222                                                  984 
2223 Equation of Motion:                              985 Equation of Motion:
2224 G4MagEqRhs.hh  Made SetChargeMomentumMass vir    986 G4MagEqRhs.hh  Made SetChargeMomentumMass virtual, so that G4Mag_SpinEqRhs
2225                  can initialise its constants << 987                  can initialise its constants too. 
2226                                                  988 
2227                                                  989 
2228 February  9th, 1999   P. Gumplinger              990 February  9th, 1999   P. Gumplinger
2229                                                  991 
2230 Added Equation of Motion for Spin in Magnetic    992 Added Equation of Motion for Spin in Magnetic Field.
2231                                                  993 
2232                                                  994 
2233 February 17th, 1999   J. Apostolakis  -  fiel    995 February 17th, 1999   J. Apostolakis  -  field-01-00-01
2234   --->  date is correct, made sure that tag d    996   --->  date is correct, made sure that tag does not include above fixes!
2235                                               << 997   
2236  Moved G4PropagatorInField files to geometry/ << 998  Moved G4PropagatorInField files to geometry/volumes. 
2237  Updated GNUmakefile not to depend on geometr    999  Updated GNUmakefile not to depend on geometry/volumes anymore.
2238    -> the known circular dependency is remove    1000    -> the known circular dependency is removed
2239                                                  1001 
2240                                                  1002 
2241 ---------------------------------------------    1003 ---------------------------------------------------------------------------
2242     ------    Geant 4  Production Release   -    1004     ------    Geant 4  Production Release   ------------
2243 ---------------------------------------------    1005 --------------------------------------------------------------------------
2244 Nov   19th, 1998   J. Apostolakis  -  field-0    1006 Nov   19th, 1998   J. Apostolakis  -  field-00-04-01head ===> R+D version only
2245                                                  1007 
2246  G4PropagatorInField files modified:             1008  G4PropagatorInField files modified:
2247                                                  1009 
2248    - to store the last safety computed and it    1010    - to store the last safety computed and its origin.
2249    - to give them to a requester                 1011    - to give them to a requester
2250 ---------------------------------------------    1012 ------------------------------------------------------------------
2251                                                  1013 
2252 Nov   19th, 1998   J. Apostolakis  -  field-0    1014 Nov   19th, 1998   J. Apostolakis  -  field-00-03-03b
2253                                                  1015 
2254  Subtle fix to interface of G4UniformMagField << 1016  Subtle fix to interface of G4UniformMagField::GetFieldValue  
2255          ( that tripped Visual C++ )             1017          ( that tripped Visual C++ )
2256                                                  1018 
2257  G4PropagatorInField:  added printing method     1019  G4PropagatorInField:  added printing method for verboseness.
2258                                                  1020 
2259 Nov   19th, 1998   J. Apostolakis  -  field-0    1021 Nov   19th, 1998   J. Apostolakis  -  field-00-03-03a
2260                                                  1022 
2261    Steppers:  Fixed instance variables constr    1023    Steppers:  Fixed instance variables construction (SimpleRunge)
2262               and clash of names in CashKarp:    1024               and clash of names in CashKarp::StepWithEstimate
2263                                                  1025 
2264    Added post-const to all Field classes for     1026    Added post-const to all Field classes for
2265            void GetFieldValue(const G4double     1027            void GetFieldValue(const G4double yTrack[] ,
2266                                  G4double B[]    1028                                  G4double B[]      ) const ;
2267                                                  1029 
2268    Added SetFieldValue methods to UniformMagF    1030    Added SetFieldValue methods to UniformMagField
2269                                                  1031 
2270    Added GetConstantFieldValue() methods to U    1032    Added GetConstantFieldValue() methods to Uniform Mag & Electric Fields
2271                                                  1033 
2272                                                  1034 
2273 Nov   19th, 1998   J. Apostolakis  -  field-0    1035 Nov   19th, 1998   J. Apostolakis  -  field-00-03-03
2274                                                  1036 
2275    Fixes to Propagate and Steppers               1037    Fixes to Propagate and Steppers
2276                                                  1038 
2277 Nov   19th, 1998   J. Apostolakis  -  field-0    1039 Nov   19th, 1998   J. Apostolakis  -  field-00-03-02
2278                                                  1040 
2279    Minor corrections  (???)                      1041    Minor corrections  (???)
2280                                                  1042 
2281 Nov   19th, 1998   J. Apostolakis  -  field-0    1043 Nov   19th, 1998   J. Apostolakis  -  field-00-03-02
2282                                               << 1044  
2283    Major development to allow Electric Field     1045    Major development to allow Electric Field
2284                                               << 1046    
2285                                                  1047 
2286                                                  1048 
2287 June  17th, 1998   J. Apostolakis  -  magfiel    1049 June  17th, 1998   J. Apostolakis  -  magfield-06-03
2288                                                  1050 
2289  Modified Files:                                 1051  Modified Files:
2290         include/G4PropagatorInField.hh           1052         include/G4PropagatorInField.hh
2291             src/G4PropagatorInField.cc           1053             src/G4PropagatorInField.cc
2292            test/testPropagateInField.cc          1054            test/testPropagateInField.cc
2293 ---------------------------------------------    1055 ----------------------------------------------------------------------
2294                                                  1056 
2295  1)  Added an assertion after each call to Lo << 1057  1)  Added an assertion after each call to LocateGlobalPointAndSetup. 
2296      It checks that the located volume is equ    1058      It checks that the located volume is equal to the current volume.
2297      If this check fails, the Propagator does    1059      If this check fails, the Propagator does not know how to continue.
2298                                                  1060 
2299  2)  Added an argument  to ComputeStep method    1061  2)  Added an argument  to ComputeStep method of G4PropagatorInField.
2300   The new volume argument is used to check th    1062   The new volume argument is used to check the current volume during the step.
2301                                                  1063 
2302  3)  When G4Navigator's ComputeStep returned     1064  3)  When G4Navigator's ComputeStep returned  stepLength==stepRequested,  this
2303 used to be treated as a failure to intersect.    1065 used to be treated as a failure to intersect.  This is incorrect.
2304                                                  1066 
2305     stepLength==stepRequested is an intersect    1067     stepLength==stepRequested is an intersection,
2306       so I am now treating it as such in each    1068       so I am now treating it as such in each comparison (of 3).
2307       Ignoring it causes problems, including     1069       Ignoring it causes problems, including volume being skipped.
2308       --> but treating it as an intersection     1070       --> but treating it as an intersection used to cause problems too ??
2309                                                  1071 
2310                                                  1072 
2311 May    7th, 1998    J. Apostolakis  -  magfie    1073 May    7th, 1998    J. Apostolakis  -  magfield-06-02-helix01
2312                                                  1074 
2313 - Tag includes new version of G4ChordFinder (    1075 - Tag includes new version of G4ChordFinder (not used by W.Wander).
2314                                                  1076 
2315                                                  1077 
2316 May    7th, 1998    W. Wander     (recorded/c    1078 May    7th, 1998    W. Wander     (recorded/commited by  J. Apostolakis)
2317                                                  1079 
2318 - New "helical" RK steppers that move in heli    1080 - New "helical" RK steppers that move in helical segments, not linear.
2319     * Several changes to add steppers         << 1081     * Several changes to add steppers 
2320                                                  1082 
2321  Modified Files:                                 1083  Modified Files:
2322         G4MagErrorStepper.hh                  << 1084         G4MagErrorStepper.hh 
2323         G4MagErrorStepper.cc                  << 1085         G4MagErrorStepper.cc 
2324            added Helical stepping methods to     1086            added Helical stepping methods to this general ABC.
2325                                               << 1087         
2326         G4MagIntegratorStepper.hh                1088         G4MagIntegratorStepper.hh
2327            made RightHandSide virtual   (this    1089            made RightHandSide virtual   (this will be reversed very soon)
2328                                                  1090 
2329         testPropagateMagField.cc                 1091         testPropagateMagField.cc
2330            Test of Helical stepping functiona    1092            Test of Helical stepping functionality added.
2331                                               << 1093            
2332  Added Files for new Helical RK steppers, der    1094  Added Files for new Helical RK steppers, deriving from G4MagErrorStepper:
2333         G4HelixExplicitEuler.cc  ( and .hh )     1095         G4HelixExplicitEuler.cc  ( and .hh )
2334         G4HelixHeum.cc                           1096         G4HelixHeum.cc
2335         G4HelixImplicitEuler.cc                  1097         G4HelixImplicitEuler.cc
2336         G4HelixSimpleRunge.cc                 << 1098         G4HelixSimpleRunge.cc  
2337                                                  1099 
2338  Added File for implementation:                  1100  Added File for implementation:
2339         G4MagErrorStepper.icc                    1101         G4MagErrorStepper.icc
2340                                                  1102 
2341                                                  1103 
2342 May    7th, 1998    J. Apostolakis   -  magfi    1104 May    7th, 1998    J. Apostolakis   -  magfield-06-01
2343                                                  1105 
2344 - added small changes to                      << 1106 - added small changes to 
2345     * G4ChordFinder:           methods to get    1107     * G4ChordFinder:           methods to get/set IntegratorDriver
2346     * G4MagIntegratorDriver:   made OneGoodSt    1108     * G4MagIntegratorDriver:   made OneGoodStep method public
2347 - created the file.                              1109 - created the file.
                                                   >> 1110