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da0e9ce3 | 1 | //-------------------------------------------------------------------------- |
2 | // | |
3 | // Environment: | |
4 | // This software is part of the EvtGen package developed jointly | |
5 | // for the BaBar and CLEO collaborations. If you use all or part | |
6 | // of it, please give an appropriate acknowledgement. | |
7 | // | |
8 | // Copyright Information: See EvtGen/COPYRIGHT | |
9 | // Copyright (C) 2002 Caltech | |
10 | // | |
11 | // Module: EvtAmpSubIndex.cc | |
12 | // | |
13 | // Description: Class to manipulate the amplitudes in the decays. | |
14 | // | |
15 | // Modification history: | |
16 | // | |
17 | // RYD Nov 22, 2002 Module created | |
18 | // | |
19 | //------------------------------------------------------------------------ | |
20 | // | |
21 | #include "EvtGenBase/EvtPatches.hh" | |
22 | #include "EvtGenBase/EvtAmpIndex.hh" | |
23 | #include "EvtGenBase/EvtAmpSubIndex.hh" | |
24 | #include <vector> | |
25 | using std::vector; | |
26 | ||
27 | ||
28 | EvtAmpSubIndex::EvtAmpSubIndex(EvtAmpIndex* ind,std::vector<int> sub): | |
29 | _ind(ind), | |
30 | _sub(sub), | |
31 | _size(sub.size()), | |
32 | _nstate(sub.size()) | |
33 | { | |
34 | int i; | |
35 | ||
36 | for(i=0;i<_size;i++) { | |
37 | if (i==0){ | |
38 | _nstate[i]=1; | |
39 | } | |
40 | else{ | |
41 | _nstate[i]=_nstate[i-1]*_ind->_ind[sub[i-1]]; | |
42 | } | |
43 | } | |
44 | } | |
45 | ||
46 | ||
47 | int EvtAmpSubIndex::index(){ | |
48 | ||
49 | int i; | |
50 | int ind=0; | |
51 | ||
52 | for(i=0;i<_size;i++) { | |
53 | ind+=_ind->_state[_ind->_ind[i]]*_nstate[i]; | |
54 | } | |
55 | ||
56 | return ind; | |
57 | ||
58 | } | |
59 | ||
60 | ||
61 | ||
62 | ||
63 | ||
64 | ||
65 | ||
66 | ||
67 | ||
68 | ||
69 |