| Geant4 Cross Reference |
1 // -*- C++ -*- 1
2 //
3 // -------------------------------------------
4 // HEP Random
5 // --- StaticRandomStates
6 // class implementation f
7 // -------------------------------------------
8 //
9 // ===========================================
10 // Mark Fischler - Created: Dec. 21, 2004
11 // Mark Fischler - Modified restore() to util
12 // to create anonymous restor
13 //
14 // ===========================================
15
16 #include "CLHEP/Random/StaticRandomStates.h"
17 #include "CLHEP/Random/RandGauss.h"
18 #include "CLHEP/Random/RandFlat.h"
19 #include <iostream>
20 #include <string>
21 #include <sstream>
22
23 //======================//
24 // //
25 // Maintenance warning: //
26 // //
27 //======================//
28 //
29 // Currently, only two distributions (RandFlat
30 // distribution state. All such distributions
31 // another such distribution is added, this im
32 // modified to reflect that.
33
34 namespace CLHEP {
35
36
37 std::ostream & StaticRandomStates::save(std::o
38 RandGauss::saveFullState(os);
39 RandFlat::saveDistState(os);
40 return os;
41 }
42
43 #ifdef NOTYET
44 std::istream & StaticRandomStates::restore(std
45 RandGauss::restoreFullState(is);
46 RandFlat::restoreDistState(is);
47 return is;
48 }
49 #endif
50
51 std::istream & StaticRandomStates::restore(std
52 HepRandomEngine * e = HepRandom::getTheEngin
53 HepRandomEngine *ne = HepRandomEngine::newEn
54 if ( !is ) return is;
55 if ( !ne ) return is;
56 if (ne->name() == e->name()) {
57 // Because e has const data members, canno
58 std::ostringstream os;
59 os << *ne;
60 std::istringstream istst(os.str());
61 istst >> *e;
62 if (!istst) {
63 std::cerr << "???? Unexpected behavior i
64 << "The new engine, which had been inp
65 << "has encountered a problem when used to s
66 is.clear(std::ios::badbit | is.rdstate()
67 return is;
68 }
69 } else {
70 HepRandom::setTheEngine(ne);
71 }
72 RandGauss::restoreDistState(is);
73 RandFlat::restoreDistState(is);
74 return is;
75 }
76
77 } // namespace CLHEP
78