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25 //
26 /// \file eventgenerator/HepMC/HepMCEx01/src/H
27 /// \brief Implementation of the HEPEvtcom cla
28 //
29 //
30 // ===========================================
31 // PARAMETER (NMXHEP=4000)
32 // COMMON/HEPEVT/NEVHEP,NHEP,ISTHEP(NMXHE
33 // & JMOHEP(2,NMXHEP),JDAHEP(2,NMXH
34 // ===========================================
35 ///*******************************************
36 ///* D E S C R I P T I O N :
37 ///*------------------------------------------
38 ///* NEVHEP - event number (or some s
39 ///* (see documentation for
40 ///* NHEP - actual number of entrie
41 ///* event.
42 ///* ISTHEP[IHEP] - status code for IHEP'th
43 ///* documentation for deta
44 ///* IDHEP [IHEP] - IHEP'th particle identi
45 ///* to PDG.
46 ///* JMOHEP[IHEP][0] - pointer to position of
47 ///* JMOHEP[IHEP][1] - pointer to position of
48 ///* JDAHEP[IHEP][0] - pointer to position of
49 ///* JDAHEP[IHEP][1] - pointer to position of
50 ///* PHEP [IHEP][0] - X momentum [Gev/c]
51 ///* PHEP [IHEP][1] - Y momentum [Gev/c]
52 ///* PHEP [IHEP][2] - Z momentum [Gev/c]
53 ///* PHEP [IHEP][3] - Energy [Gev]
54 ///* PHEP [IHEP][4] - Mass[Gev/c^2]
55 ///* VHEP [IHEP][0] - X vertex [mm]
56 ///* VHEP [IHEP][1] - Y vertex [mm]
57 ///* VHEP [IHEP][2] - Z vertex [mm]
58 ///* VHEP [IHEP][3] - production time [mm/c]
59 ///*==========================================
60 //
61 // This interface to HEPEVT common block treat
62 // an array of bytes --- the precision and num
63 // is determined "on the fly" by the wrapper a
64 // each entry.
65 //
66 // HEPEVT_EntriesAllocation is the maximum siz
67 // that can be interfaced. It is NOT the actua
68 // used in each individual application. The ac
69 // the fly using HepMC::HEPEVT_Wrapper::set_ma
70 // Thus HEPEVT_EntriesAllocation should typica
71 // to the maximum possible number of entries -
72 // (and is the number used by ATLAS versions o
73
74 #include <ctype.h>
75
76 //....oooOO0OOooo........oooOO0OOooo........oo
77
78 enum
79 {
80 HEPEVT_EntriesAllocation = 4000
81 };
82
83 const unsigned int hepevt_bytes_allocation = s
84 +
85
86 //....oooOO0OOooo........oooOO0OOooo........oo
87
88 extern "C" struct hepevt
89 {
90 char data[hepevt_bytes_allocation];
91 };
92
93 hepevt hepevt_;
94