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25 //
26 /// \file eventgenerator/HepMC/HepMCEx02/src/H
27 /// \brief Implementation of the HEPEvtcom cla
28 //
29 // ===========================================
30 // PARAMETER (NMXHEP=4000)
31 // COMMON/HEPEVT/NEVHEP,NHEP,ISTHEP(NMXHE
32 // & JMOHEP(2,NMXHEP),JDAHEP(2,NMXH
33 // ===========================================
34 ///*******************************************
35 ///* D E S C R I P T I O N :
36 ///*------------------------------------------
37 ///* NEVHEP - event number (or some s
38 ///* (see documentation for
39 ///* NHEP - actual number of entrie
40 ///* event.
41 ///* ISTHEP[IHEP] - status code for IHEP'th
42 ///* documentation for deta
43 ///* IDHEP [IHEP] - IHEP'th particle identi
44 ///* to PDG.
45 ///* JMOHEP[IHEP][0] - pointer to position of
46 ///* JMOHEP[IHEP][1] - pointer to position of
47 ///* JDAHEP[IHEP][0] - pointer to position of
48 ///* JDAHEP[IHEP][1] - pointer to position of
49 ///* PHEP [IHEP][0] - X momentum [Gev/c]
50 ///* PHEP [IHEP][1] - Y momentum [Gev/c]
51 ///* PHEP [IHEP][2] - Z momentum [Gev/c]
52 ///* PHEP [IHEP][3] - Energy [Gev]
53 ///* PHEP [IHEP][4] - Mass[Gev/c^2]
54 ///* VHEP [IHEP][0] - X vertex [mm]
55 ///* VHEP [IHEP][1] - Y vertex [mm]
56 ///* VHEP [IHEP][2] - Z vertex [mm]
57 ///* VHEP [IHEP][3] - production time [mm/c]
58 ///*==========================================
59 //
60 // This interface to HEPEVT common block treat
61 // an array of bytes --- the precision and num
62 // is determined "on the fly" by the wrapper a
63 // each entry.
64 //
65 // HEPEVT_EntriesAllocation is the maximum siz
66 // that can be interfaced. It is NOT the actua
67 // used in each individual application. The ac
68 // the fly using HepMC::HEPEVT_Wrapper::set_ma
69 // Thus HEPEVT_EntriesAllocation should typica
70 // to the maximum possible number of entries -
71 // (and is the number used by ATLAS versions o
72
73 #include <ctype.h>
74
75 //....oooOO0OOooo........oooOO0OOooo........oo
76
77 enum
78 {
79 HEPEVT_EntriesAllocation = 4000
80 };
81
82 const unsigned int hepevt_bytes_allocation = s
83 +
84
85 //....oooOO0OOooo........oooOO0OOooo........oo
86
87 extern "C" struct hepevt
88 {
89 char data[hepevt_bytes_allocation];
90 };
91
92 hepevt hepevt_;
93