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26 /* 26 /*
27 * =========================================== 27 * =============================================================================
28 * 28 *
29 * Filename: CexmcGenbod.cc 29 * Filename: CexmcGenbod.cc
30 * 30 *
31 * Description: original fortran routine G 31 * Description: original fortran routine GENBOD wrapper
32 * 32 *
33 * Version: 1.0 33 * Version: 1.0
34 * Created: 08.09.2010 14:36:23 34 * Created: 08.09.2010 14:36:23
35 * Revision: none 35 * Revision: none
36 * Compiler: gcc 36 * Compiler: gcc
37 * 37 *
38 * Author: Alexey Radkov (), 38 * Author: Alexey Radkov (),
39 * Company: PNPI 39 * Company: PNPI
40 * 40 *
41 * =========================================== 41 * =============================================================================
42 */ 42 */
43 43
44 #ifdef CEXMC_USE_GENBOD 44 #ifdef CEXMC_USE_GENBOD
45 45
46 #include <G4SystemOfUnits.hh> <<
47 #include "CexmcGenbod.hh" 46 #include "CexmcGenbod.hh"
48 #include "CexmcException.hh" 47 #include "CexmcException.hh"
49 48
50 49
51 extern "C" 50 extern "C"
52 { 51 {
53 extern int genbod_( void ); 52 extern int genbod_( void );
54 } 53 }
55 54
56 55
57 extern struct genbod_in_data 56 extern struct genbod_in_data
58 { 57 {
59 int np; 58 int np;
60 float tecm; 59 float tecm;
61 float amass[ 18 ]; 60 float amass[ 18 ];
62 int kgenev; 61 int kgenev;
63 } genin_; 62 } genin_;
64 63
65 64
66 extern struct genbod_out_data 65 extern struct genbod_out_data
67 { 66 {
68 float pcm[ 18 ][ 5 ]; 67 float pcm[ 18 ][ 5 ];
69 float wt; 68 float wt;
70 } genout_; 69 } genout_;
71 70
72 71
73 CexmcGenbod::CexmcGenbod() 72 CexmcGenbod::CexmcGenbod()
74 { 73 {
75 genin_.np = 0; 74 genin_.np = 0;
76 genin_.kgenev = 1; 75 genin_.kgenev = 1;
77 } 76 }
78 77
79 78
80 G4bool CexmcGenbod::CheckKinematics( void ) 79 G4bool CexmcGenbod::CheckKinematics( void )
81 { 80 {
82 totalEnergy = 0.; 81 totalEnergy = 0.;
83 for ( CexmcPhaseSpaceInVector::const_itera 82 for ( CexmcPhaseSpaceInVector::const_iterator k( inVec.begin() );
84 83 k != inVec.end(); ++k )
85 { 84 {
86 totalEnergy += ( *k )->e(); 85 totalEnergy += ( *k )->e();
87 } 86 }
88 87
89 /* epsilon is needed to compensate float t 88 /* epsilon is needed to compensate float to fortran real cast accuracy,
90 * the value 3E-6 was found experimentally 89 * the value 3E-6 was found experimentally, maybe has to be made bigger,
91 * but not smaller */ 90 * but not smaller */
92 const float epsilon( 3E-6 ); 91 const float epsilon( 3E-6 );
93 92
94 return totalEnergy - totalMass > 0.0f + ep 93 return totalEnergy - totalMass > 0.0f + epsilon;
95 } 94 }
96 95
97 96
98 G4double CexmcGenbod::Generate( void ) 97 G4double CexmcGenbod::Generate( void )
99 { 98 {
100 genin_.tecm = totalEnergy / GeV; 99 genin_.tecm = totalEnergy / GeV;
101 100
102 genbod_(); 101 genbod_();
103 102
104 float ( *pcm )[ 5 ]( &genout_.pcm[ 0 ] ); 103 float ( *pcm )[ 5 ]( &genout_.pcm[ 0 ] );
105 104
106 for ( CexmcPhaseSpaceOutVector::iterator 105 for ( CexmcPhaseSpaceOutVector::iterator k( outVec.begin() );
107 106 k != outVec.end(); ++k )
108 { 107 {
109 k->lVec->setPx( ( *pcm )[ 0 ] * GeV ); 108 k->lVec->setPx( ( *pcm )[ 0 ] * GeV );
110 k->lVec->setPy( ( *pcm )[ 1 ] * GeV ); 109 k->lVec->setPy( ( *pcm )[ 1 ] * GeV );
111 k->lVec->setPz( ( *pcm )[ 2 ] * GeV ); 110 k->lVec->setPz( ( *pcm )[ 2 ] * GeV );
112 k->lVec->setE( ( *pcm++ )[ 3 ] * GeV ) 111 k->lVec->setE( ( *pcm++ )[ 3 ] * GeV );
113 } 112 }
114 113
115 return genout_.wt; 114 return genout_.wt;
116 } 115 }
117 116
118 117
119 void CexmcGenbod::ParticleChangeHook( void ) 118 void CexmcGenbod::ParticleChangeHook( void )
120 { 119 {
121 size_t nmbOfOutputParticles( outVec.size( 120 size_t nmbOfOutputParticles( outVec.size() );
122 121
123 if ( nmbOfOutputParticles < 2 || nmbOfOutp 122 if ( nmbOfOutputParticles < 2 || nmbOfOutputParticles > 18 )
124 throw CexmcException( CexmcKinematicsE 123 throw CexmcException( CexmcKinematicsException );
125 124
126 genin_.np = nmbOfOutputParticles; 125 genin_.np = nmbOfOutputParticles;
127 126
128 float * amass( genin_.amass ); 127 float * amass( genin_.amass );
129 128
130 for ( CexmcPhaseSpaceOutVector::const_iter 129 for ( CexmcPhaseSpaceOutVector::const_iterator k( outVec.begin() );
131 130 k != outVec.end(); ++k )
132 { 131 {
133 *amass++ = k->mass / GeV; 132 *amass++ = k->mass / GeV;
134 } 133 }
135 } 134 }
136 135
137 136
138 void CexmcGenbod::FermiEnergyDepStatusChangeH 137 void CexmcGenbod::FermiEnergyDepStatusChangeHook( void )
139 { 138 {
140 genin_.kgenev = fermiEnergyDepIsOn ? 2 : 1 139 genin_.kgenev = fermiEnergyDepIsOn ? 2 : 1;
141 } 140 }
142 141
143 #endif 142 #endif
144 143
145 144