/usr/include/fflas-ffpack/utils/Matio.h is in fflas-ffpack-common 2.2.2-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// vim:sts=4:sw=4:ts=4:noet:sr:cino=>s,f0,{0,g0,(0,\:0,t0,+0,=s
/* Copyright (C) LinBox,FFLAS-FFPACK
*
* ========LICENCE========
* This file is part of the library FFLAS-FFPACK.
*
* FFLAS-FFPACK is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
* ========LICENCE========
*/
#ifndef __FFLASFFPACK_matio_H
#define __FFLASFFPACK_matio_H
#include <cstring>
#include <stdio.h>
#include <stdlib.h>
//#include "fflas-ffpack/fflas/fflas.h"
#include "fflas_memory.h"
// Reading and writing matrices over field
// Reading a matrice from a (eventually zipped) file
template<class Field>
typename Field::Element_ptr read_field(const Field& F, const char * mat_file,size_t * tni,size_t* tnj)
{
char *UT = NULL;
const char* File_Name;
int is_gzipped = 0;
size_t s = strlen(mat_file);
typename Field::Element_ptr X = NULL;
if ((mat_file[--s] == 'z') &&
(mat_file[--s] == 'g') &&
(mat_file[--s] == '.')) {
is_gzipped = 1;
char tmp_nam[] = "/tmp/bbXXXXXX_";
if (mkstemp(tmp_nam))
printf("Error opening file]\n");
File_Name = tmp_nam;
UT = FFLAS::fflas_new<char>(s+34+strlen(File_Name));
sprintf(UT,"gunzip -c %s > %s", mat_file, File_Name);
if (system(UT))
printf("Error uncompressing file\n");
sprintf(UT,"\\rm %s", File_Name);
} else {
File_Name = mat_file;
}
FILE* FileDes = fopen(File_Name, "r");
if (FileDes != NULL) {
char tmp [200];// unsigned long tni, tnj;
if (fscanf(FileDes,"%lu %lu %199s\n",tni, tnj, tmp)<0)
printf("Error Reading first line of file \n");
int n=*tni;
int p=*tnj;
X = FFLAS::fflas_new<typename Field::Element>(n*p);
for (int i=0;i<n*p;++i)
F.assign(X[i], F.zero);
long i,j; long val;
if(fscanf(FileDes,"%ld %ld %ld\n",&i, &j, &val)<0)
printf("Read Error\n");
while(i && j) {
F.init(X[p*(i-1)+j-1],val);
if(fscanf(FileDes,"%ld %ld %ld\n",&i, &j, &val)<0)
printf("Read Error\n");
}
fclose(FileDes);
}
if (is_gzipped)
if (system(UT))
printf("Error uncompressing file\n");
if (UT != NULL)
FFLAS::fflas_delete( UT);
return X;
}
// Displays a matrix
template<class Field>
std::ostream& write_field(const Field& F,std::ostream& c,
typename Field::ConstElement_ptr E,
int n, int m, int id, bool mapleFormat = false, bool column_major=false)
{
// typename Field::Element tmp;
// double tmp;
// Givaro::Integer tmp;
typename Field::Element tmp;
F.init(tmp);
if (mapleFormat) c << "Matrix(" << n <<',' << m << ",\n[" ;
for (int i = 0; i<n;++i){
if (mapleFormat) c << '[';
for (int j=0; j<m;++j){
if (column_major)
F.assign(tmp, *(E+i+id*j));
// F.convert(tmp,*(E+i+id*j));
else
F.assign(tmp, *(E+j+id*i));
// F.convert(tmp,*(E+j+id*i));
F.write(c, tmp);
if (mapleFormat && j<m-1) c << ',';
c << ' ';
}
if (mapleFormat) c << ']';
if (mapleFormat && i<n-1) c << ',';
if (!mapleFormat) c << std::endl;
}
if (mapleFormat) c << "]);";
return c ;
}
inline std::ostream& write_perm (std::ostream& c, const size_t* P, size_t N){
c<<"[ ";
for (size_t i=0; i<N; ++i){
if (i)
c<<", ";
c<<P[i];
}
c<<"]"<<std::endl;
return c;
}
#endif //__FFLASFFPACK_matio_H
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