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1 | /************************************************************************** | |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
16 | /* $Id$ */ | |
17 | ||
18 | /// \class AliMUONRegionalTriggerBoard | |
19 | /// Dimuon regional trigger implementation: | |
20 | /// - entry are local board responses | |
21 | /// - output is 12-bit word | |
22 | /// - algorithm is similar to the global one | |
23 | /// \todo Change member functions comments in capital letters to normal text | |
24 | /// | |
25 | /// \author Rachid Guernane (LPCCFd) | |
26 | ||
27 | #include "AliMUONRegionalTriggerBoard.h" | |
28 | ||
29 | #include "AliLog.h" | |
30 | ||
31 | #include "TBits.h" | |
32 | ||
33 | #include <Riostream.h> | |
34 | ||
35 | /// \cond CLASSIMP | |
36 | ClassImp(AliMUONRegionalTriggerBoard) | |
37 | /// \endcond | |
38 | ||
39 | //___________________________________________ | |
40 | AliMUONRegionalTriggerBoard::AliMUONRegionalTriggerBoard() | |
41 | { | |
42 | /// Default constructor | |
43 | for (Int_t i=0; i<16; i++) fLocalResponse[i] = 0; | |
44 | } | |
45 | ||
46 | //___________________________________________ | |
47 | AliMUONRegionalTriggerBoard::AliMUONRegionalTriggerBoard(const char *name, Int_t a) : AliMUONTriggerBoard(name, a) | |
48 | { | |
49 | /// Standard constructor | |
50 | for (Int_t i=0; i<16; i++) fLocalResponse[i] = 0; | |
51 | } | |
52 | ||
53 | //___________________________________________ | |
54 | AliMUONRegionalTriggerBoard::~AliMUONRegionalTriggerBoard() | |
55 | { | |
56 | /// Destructor | |
57 | } | |
58 | ||
59 | //___________________________________________ | |
60 | void AliMUONRegionalTriggerBoard::Response() | |
61 | { | |
62 | /// RESPONSE IS GIVEN FOLLOWING THE REGIONAL ALGORITHM | |
63 | ||
64 | Int_t t[16]; | |
65 | ||
66 | for (Int_t i=0;i<16;i++) t[i] = fLocalResponse[i] & fMask[i]; | |
67 | ||
68 | Int_t rank = 8; | |
69 | ||
70 | for (Int_t i=0;i<4;i++) | |
71 | { | |
72 | Int_t ip = 0; | |
73 | ||
74 | for (Int_t j=0;j<rank;j++) | |
75 | { | |
76 | UShort_t lthres = Algo(t[2*j],t[2*j+1],"LPT",i); | |
77 | ||
78 | UShort_t hthres = Algo(t[2*j],t[2*j+1],"HPT",i); hthres <<= 4; | |
79 | ||
80 | t[ip] = lthres | hthres; | |
81 | ||
82 | ip++; | |
83 | } | |
84 | ||
85 | rank /= 2; | |
86 | } | |
87 | ||
88 | fResponse = t[0]; // 8-bit [H4:L4] | |
89 | } | |
90 | ||
91 | //___________________________________________ | |
92 | UShort_t AliMUONRegionalTriggerBoard::Algo(UShort_t i, UShort_t j, char *thres, Int_t level) | |
93 | { | |
94 | /// IMPLEMENTATION OF THE REGIONAL ALGORITHM | |
95 | /// SIMILAR TO THE GLOBAL ALGORITHM EXCEPT FOR THE | |
96 | /// INPUT LAYER | |
97 | ||
98 | TBits a(8), b(8); a.Set(8,&i); b.Set(8,&j); | |
99 | ||
100 | TBits trg1(2), trg2(2), trg(2); | |
101 | ||
102 | if (!strcmp(thres,"LPT")) | |
103 | { | |
104 | if (!level) | |
105 | { | |
106 | trg1[0] = a[0]; trg1[1] = a[1]; | |
107 | trg2[0] = b[0]; trg2[1] = b[1]; | |
108 | } | |
109 | else | |
110 | { | |
111 | trg1[0] = a[2]; trg1[1] = a[3]; | |
112 | trg2[0] = b[2]; trg2[1] = b[3]; | |
113 | } | |
114 | } | |
115 | else | |
116 | { | |
117 | if (!level) | |
118 | { | |
119 | trg1[0] = a[2]; trg1[1] = a[3]; | |
120 | trg2[0] = b[2]; trg2[1] = b[3]; | |
121 | } | |
122 | else | |
123 | { | |
124 | trg1[0] = a[6]; trg1[1] = a[7]; | |
125 | trg2[0] = b[6]; trg2[1] = b[7]; | |
126 | } | |
127 | } | |
128 | ||
129 | TBits trgLS1(1), trgUS1(1), trgLS2(1), trgUS2(1), trgLS(1), trgUS(1); | |
130 | ||
131 | if (!level) | |
132 | { | |
133 | trgLS1[0] = trgUS1[0] = trgLS2[0] = trgUS2[0] = 0; | |
134 | } | |
135 | else | |
136 | { | |
137 | if (!strcmp(thres,"LPT")) | |
138 | { | |
139 | trgLS1[0] = a[1]; trgUS1[0] = a[0]; | |
140 | trgLS2[0] = b[1]; trgUS2[0] = b[0]; | |
141 | } | |
142 | else | |
143 | { | |
144 | trgLS1[0] = a[5]; trgUS1[0] = a[4]; | |
145 | trgLS2[0] = b[5]; trgUS2[0] = b[4]; | |
146 | } | |
147 | } | |
148 | ||
149 | trgLS[0] = ( trg1[0] & trg2[0] ) | ( trg1[1] & trg2[1] ) | trgLS1[0] | trgLS2[0]; | |
150 | trgUS[0] = ( trg1[0] & trg2[1] ) | ( trg1[1] & trg2[0] ) | trgUS1[0] | trgUS2[0]; | |
151 | ||
152 | trg[0] = trg1[0] | trg2[0]; | |
153 | trg[1] = trg1[1] | trg2[1]; | |
154 | ||
155 | TBits v(4); | |
156 | ||
157 | v[0] = trgUS[0]; | |
158 | v[1] = trgLS[0]; | |
159 | v[2] = trg[0]; | |
160 | v[3] = trg[1]; | |
161 | ||
162 | UShort_t rv = 0; | |
163 | v.Get(&rv); | |
164 | ||
165 | return rv; | |
166 | } | |
167 | ||
168 | //___________________________________________ | |
169 | void AliMUONRegionalTriggerBoard::Scan(Option_t*) const | |
170 | { | |
171 | /// SCAN LOCAL BOARD ENTRIES | |
172 | ||
173 | for (Int_t i=0; i<16; i++) | |
174 | { | |
175 | TBits b; | |
176 | b.Set(6,&fLocalResponse[i]); | |
177 | ||
178 | cout << "Entry " << i << " is " << b << endl; | |
179 | ||
180 | } | |
181 | ||
182 | } | |
183 | ||
184 | //___________________________________________ | |
185 | void AliMUONRegionalTriggerBoard::Mask(Int_t index, UShort_t mask) | |
186 | { | |
187 | /// MASK ENTRY index | |
188 | ||
189 | if ( index>=0 && index < 16 ) | |
190 | { | |
191 | fMask[index]=mask; | |
192 | } | |
193 | else | |
194 | { | |
195 | AliError(Form("Index %d out of bounds (max %d)",index,16)); | |
196 | } | |
197 | } |