forked from cddlib/cddlib
-
Notifications
You must be signed in to change notification settings - Fork 0
/
adjacency.c
162 lines (134 loc) · 4.68 KB
/
adjacency.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
/* adjacency.c: Test program to call the cdd library cddlib
written by Komei Fukuda, [email protected]
Version 0.93, July 18, 2003
Standard ftp site: ftp.ifor.math.ethz.ch, Directory: pub/fukuda/cdd
*/
/* This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "setoper.h"
#include "cdd.h"
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <math.h>
#include <string.h>
dd_boolean SetInputFile(FILE **f, dd_DataFileType fname)
{
dd_boolean success=dd_FALSE;
success=dd_FALSE;
if ( ( *f = fopen(fname, "r") )!= NULL) {
printf("input file %s is open\n", fname);
success=dd_TRUE;
}
else{
printf("The input file %s not found\n",fname);
}
return success;
}
dd_boolean SetWriteFile(FILE **f, dd_DataFileType fname)
{
dd_boolean success=dd_FALSE;
if ( (*f = fopen(fname, "w")) != NULL){
printf("output file %s is open\n",fname);
success=dd_TRUE;
}
else{
printf("The output file %s cannot be opened\n",fname);
}
return success;
}
int main(int argc, char *argv[])
{
dd_MatrixPtr M=NULL,M2=NULL,M3=NULL;
dd_SetFamilyPtr A=NULL;
dd_colrange d;
dd_ErrorType err=dd_NoError;
dd_rowset redrows,linrows,ignoredrows, basisrows;
dd_colset ignoredcols, basiscols;
long rank;
mytype val;
time_t starttime, endtime;
dd_DataFileType inputfile;
FILE *reading=NULL;
dd_set_global_constants(); /* First, this must be called. */
dd_init(val);
if (argc>1) strcpy(inputfile,argv[1]);
if (argc<=1 || !SetInputFile(&reading,argv[1])){
dd_WriteProgramDescription(stdout);
fprintf(stdout,"\ncddlib test program to remove redundancy and compute adjacency of the resulting representation.\n");
dd_SetInputFile(&reading,inputfile, &err);
}
if (err==dd_NoError) {
M=dd_PolyFile2Matrix(reading, &err);
}
else {
fprintf(stderr,"Input file not found\n");
goto _L99;
}
if (err!=dd_NoError) goto _L99;
if (M->representation==dd_Generator) d=M->colsize+1; else d=M->colsize;
fprintf(stdout, "redundant rows:\n");
time(&starttime);
redrows=dd_RedundantRows(M, &err);
time(&endtime);
set_fwrite(stdout, redrows);
dd_WriteTimes(stdout,starttime,endtime);
M2=dd_MatrixSubmatrix(M, redrows);
fprintf(stdout, "Implicit linearity (after removal of redundant rows): ");
linrows=dd_ImplicitLinearityRows(M2, &err);
if (M->representation==dd_Generator)
fprintf(stdout," %ld ", set_card(linrows));
else
fprintf(stdout," %ld ", set_card(linrows));
set_fwrite(stdout,linrows);
set_uni(M2->linset, M2->linset, linrows);
/* add the implicit linrows to the explicit linearity rows */
printf("\nNonredundant representation (except possibly for the linearity part):\n");
dd_WriteMatrix(stdout, M2);
/* To remove redundancy of the linearity part,
we need to compute the rank and a basis of the linearity part. */
set_initialize(&ignoredrows, M2->rowsize);
set_initialize(&ignoredcols, M2->colsize);
set_compl(ignoredrows, M2->linset);
rank=dd_MatrixRank(M2,ignoredrows,ignoredcols, &basisrows, &basiscols);
set_diff(ignoredrows, M2->linset, basisrows);
M3=dd_MatrixSubmatrix(M2, ignoredrows);
if (rank>0){
if (set_card(ignoredrows)) {
fprintf(stdout,"\nThe following %ld linearity rows are dependent and unnecessary:", set_card(ignoredrows));
set_fwrite(stdout,ignoredrows);
}
} else
fprintf(stdout,"\nThe linearity rows are independent and thus minimal\n");
printf("Nonredundant representation (= minimal representation):\n");
dd_WriteMatrix(stdout, M3);
printf("\nAdjacency of the minimal representation:\n");
A=dd_Matrix2Adjacency(M3, &err);
dd_WriteSetFamily(stdout, A);
dd_clear(val);
set_free(linrows);
set_free(basisrows);
set_free(basiscols);
set_free(ignoredrows);
set_free(ignoredcols);
set_free(redrows);
if (A!=NULL) dd_FreeSetFamily(A);
dd_FreeMatrix(M);
dd_FreeMatrix(M2);
dd_FreeMatrix(M3);
_L99:;
if (err!=dd_NoError) dd_WriteErrorMessages(stderr,err);
dd_free_global_constants(); /* At the end, this should be called. */
return 0;
}
/* end of adjacency.c */