1 | /////////////////////////////////////////////////////////////////////////////// |
---|
2 | // File: reference.cpp // |
---|
3 | // Description: source file for checkxor management (Creference class) // |
---|
4 | // This file is part of the SISCone project. // |
---|
5 | // For more details, see http://projects.hepforge.org/siscone // |
---|
6 | // // |
---|
7 | // Copyright (c) 2006 Gavin Salam and Gregory Soyez // |
---|
8 | // // |
---|
9 | // This program is free software; you can redistribute it and/or modify // |
---|
10 | // it under the terms of the GNU General Public License as published by // |
---|
11 | // the Free Software Foundation; either version 2 of the License, or // |
---|
12 | // (at your option) any later version. // |
---|
13 | // // |
---|
14 | // This program is distributed in the hope that it will be useful, // |
---|
15 | // but WITHOUT ANY WARRANTY; without even the implied warranty of // |
---|
16 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // |
---|
17 | // GNU General Public License for more details. // |
---|
18 | // // |
---|
19 | // You should have received a copy of the GNU General Public License // |
---|
20 | // along with this program; if not, write to the Free Software // |
---|
21 | // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA // |
---|
22 | // // |
---|
23 | // $Revision:: 859 $// |
---|
24 | // $Date:: 2012-11-28 02:49:23 +0100 (Wed, 28 Nov 2012) $// |
---|
25 | /////////////////////////////////////////////////////////////////////////////// |
---|
26 | |
---|
27 | #include "reference.h" |
---|
28 | #include "ranlux.h" |
---|
29 | #include <stdlib.h> |
---|
30 | |
---|
31 | namespace siscone{ |
---|
32 | |
---|
33 | /******************************************************* |
---|
34 | * Creference implementation * |
---|
35 | * references used for checksums. * |
---|
36 | * * |
---|
37 | * This class implements some reference variable * |
---|
38 | * that can be used for checksums. Those checksums * |
---|
39 | * are useful to disentengle between contents of two * |
---|
40 | * cones without looking into their explicit particle * |
---|
41 | * contents. * |
---|
42 | *******************************************************/ |
---|
43 | |
---|
44 | // default constructor |
---|
45 | ////////////////////// |
---|
46 | Creference::Creference(){ |
---|
47 | ref[0] = ref[1] = ref[2] = 0; |
---|
48 | } |
---|
49 | |
---|
50 | //static unsigned int reference_bit = 1; |
---|
51 | |
---|
52 | // create a random reference |
---|
53 | //--------------------------- |
---|
54 | void Creference::randomize(){ |
---|
55 | // ref[0] = reference_bit; |
---|
56 | // ref[1] = 0; |
---|
57 | // ref[2] = 0; |
---|
58 | // reference_bit <<= 1; |
---|
59 | |
---|
60 | unsigned int r1 = ranlux_get(); |
---|
61 | unsigned int r2 = ranlux_get(); |
---|
62 | unsigned int r3 = ranlux_get(); |
---|
63 | unsigned int r4 = ranlux_get(); |
---|
64 | // since ranlux only produces 24 bits, take r4 and add 8 bits |
---|
65 | // from it to each of r1,r2, r3 to get 3*32 bits. |
---|
66 | ref[0] = r1+((r4 & 0x00ff0000) << 8); |
---|
67 | ref[1] = r2+((r4 & 0x0000ff00) << 16); |
---|
68 | ref[2] = r3+((r4 & 0x000000ff) << 24); |
---|
69 | |
---|
70 | if (is_empty()) randomize(); |
---|
71 | } |
---|
72 | |
---|
73 | // test emptyness |
---|
74 | //---------------- |
---|
75 | bool Creference::is_empty(){ |
---|
76 | return (ref[0]==0) && (ref[1]==0) && (ref[2]==0); |
---|
77 | } |
---|
78 | |
---|
79 | // test non-emptyness |
---|
80 | //-------------------- |
---|
81 | bool Creference::not_empty(){ |
---|
82 | return (ref[0]!=0) || (ref[1]!=0) || (ref[2]!=0); |
---|
83 | } |
---|
84 | |
---|
85 | // assignment of reference |
---|
86 | //------------------------- |
---|
87 | Creference& Creference::operator = (const Creference &r){ |
---|
88 | ref[0] = r.ref[0]; |
---|
89 | ref[1] = r.ref[1]; |
---|
90 | ref[2] = r.ref[2]; |
---|
91 | return *this; |
---|
92 | } |
---|
93 | |
---|
94 | // addition of reference |
---|
95 | //----------------------- |
---|
96 | Creference Creference::operator + (const Creference &r){ |
---|
97 | Creference tmp = *this; |
---|
98 | return tmp+=r; |
---|
99 | } |
---|
100 | |
---|
101 | // incrementation of reference |
---|
102 | //----------------------------- |
---|
103 | Creference& Creference::operator += (const Creference &r){ |
---|
104 | ref[0] ^= r.ref[0]; |
---|
105 | ref[1] ^= r.ref[1]; |
---|
106 | ref[2] ^= r.ref[2]; |
---|
107 | return *this; |
---|
108 | } |
---|
109 | |
---|
110 | // decrementation of reference |
---|
111 | //----------------------------- |
---|
112 | Creference& Creference::operator -= (const Creference &r){ |
---|
113 | ref[0] ^= r.ref[0]; |
---|
114 | ref[1] ^= r.ref[1]; |
---|
115 | ref[2] ^= r.ref[2]; |
---|
116 | return *this; |
---|
117 | } |
---|
118 | |
---|
119 | } |
---|
120 | |
---|