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/**************************************************************************
**
** Copyright (C) 1993 David E. Steward & Zbigniew Leyk, all rights reserved.
**
** Meschach Library
**
** This Meschach Library is provided "as is" without any express
** or implied warranty of any kind with respect to this software.
** In particular the authors shall not be liable for any direct,
** indirect, special, incidental or consequential damages arising
** in any way from use of the software.
**
** Everyone is granted permission to copy, modify and redistribute this
** Meschach Library, provided:
** 1. All copies contain this copyright notice.
** 2. All modified copies shall carry a notice stating who
** made the last modification and the date of such modification.
** 3. No charge is made for this software or works derived from it.
** This clause shall not be construed as constraining other software
** distributed on the same medium as this software, nor is a
** distribution fee considered a charge.
**
***************************************************************************/
/*
This file contains routines for import/exporting complex data
to/from MATLAB. The main routines are:
ZMAT *zm_save(FILE *fp,ZMAT *A,char *name)
ZVEC *zv_save(FILE *fp,ZVEC *x,char *name)
complex z_save(FILE *fp,complex z,char *name)
ZMAT *zm_load(FILE *fp,char **name)
*/
#include <stdio.h>
#include "zmatrix.h"
#include "matlab.h"
static char rcsid[] = "$Id: zmatlab.c,v 1.2 1995/02/14 20:13:27 des Exp $";
/* zm_save -- save matrix in ".mat" file for MATLAB
-- returns matrix to be saved */
ZMAT *zm_save(fp,A,name)
FILE *fp;
ZMAT *A;
char *name;
{
int i, j;
matlab mat;
if ( ! A )
error(E_NULL,"zm_save");
mat.type = 1000*MACH_ID + 100*ORDER + 10*PRECISION + 0;
mat.m = A->m;
mat.n = A->n;
mat.imag = TRUE;
mat.namlen = (name == (char *)NULL) ? 1 : strlen(name)+1;
/* write header */
fwrite(&mat,sizeof(matlab),1,fp);
/* write name */
if ( name == (char *)NULL )
fwrite("",sizeof(char),1,fp);
else
fwrite(name,sizeof(char),(int)(mat.namlen),fp);
/* write actual data */
#if ORDER == ROW_ORDER
for ( i = 0; i < A->m; i++ )
for ( j = 0; j < A->n; j++ )
fwrite(&(A->me[i][j].re),sizeof(Real),1,fp);
for ( i = 0; i < A->m; i++ )
for ( j = 0; j < A->n; j++ )
fwrite(&(A->me[i][j].im),sizeof(Real),1,fp);
#else /* column major order: ORDER == COL_ORDER */
for ( j = 0; j < A->n; j++ )
for ( i = 0; i < A->m; i++ )
fwrite(&(A->me[i][j].re),sizeof(Real),1,fp);
for ( j = 0; j < A->n; j++ )
for ( i = 0; i < A->m; i++ )
fwrite(&(A->me[i][j].im),sizeof(Real),1,fp);
#endif
return A;
}
/* zv_save -- save vector in ".mat" file for MATLAB
-- saves it as a row vector
-- returns vector to be saved */
ZVEC *zv_save(fp,x,name)
FILE *fp;
ZVEC *x;
char *name;
{
int i, j;
matlab mat;
if ( ! x )
error(E_NULL,"zv_save");
mat.type = 1000*MACH_ID + 100*ORDER + 10*PRECISION + 0;
mat.m = x->dim;
mat.n = 1;
mat.imag = TRUE;
mat.namlen = (name == (char *)NULL) ? 1 : strlen(name)+1;
/* write header */
fwrite(&mat,sizeof(matlab),1,fp);
/* write name */
if ( name == (char *)NULL )
fwrite("",sizeof(char),1,fp);
else
fwrite(name,sizeof(char),(int)(mat.namlen),fp);
/* write actual data */
for ( i = 0; i < x->dim; i++ )
fwrite(&(x->ve[i].re),sizeof(Real),1,fp);
for ( i = 0; i < x->dim; i++ )
fwrite(&(x->ve[i].im),sizeof(Real),1,fp);
return x;
}
/* z_save -- saves complex number in ".mat" file for MATLAB
-- returns complex number to be saved */
complex z_save(fp,z,name)
FILE *fp;
complex z;
char *name;
{
matlab mat;
mat.type = 1000*MACH_ID + 100*ORDER + 10*PRECISION + 0;
mat.m = 1;
mat.n = 1;
mat.imag = TRUE;
mat.namlen = (name == (char *)NULL) ? 1 : strlen(name)+1;
/* write header */
fwrite(&mat,sizeof(matlab),1,fp);
/* write name */
if ( name == (char *)NULL )
fwrite("",sizeof(char),1,fp);
else
fwrite(name,sizeof(char),(int)(mat.namlen),fp);
/* write actual data */
fwrite(&z,sizeof(complex),1,fp);
return z;
}
/* zm_load -- loads in a ".mat" file variable as produced by MATLAB
-- matrix returned; imaginary parts ignored */
ZMAT *zm_load(fp,name)
FILE *fp;
char **name;
{
ZMAT *A;
int i;
int m_flag, o_flag, p_flag, t_flag;
float f_temp;
double d_temp;
matlab mat;
if ( fread(&mat,sizeof(matlab),1,fp) != 1 )
error(E_FORMAT,"zm_load");
if ( mat.type >= 10000 ) /* don't load a sparse matrix! */
error(E_FORMAT,"zm_load");
m_flag = (mat.type/1000) % 10;
o_flag = (mat.type/100) % 10;
p_flag = (mat.type/10) % 10;
t_flag = (mat.type) % 10;
if ( m_flag != MACH_ID )
error(E_FORMAT,"zm_load");
if ( t_flag != 0 )
error(E_FORMAT,"zm_load");
if ( p_flag != DOUBLE_PREC && p_flag != SINGLE_PREC )
error(E_FORMAT,"zm_load");
*name = (char *)malloc((unsigned)(mat.namlen)+1);
if ( fread(*name,sizeof(char),(unsigned)(mat.namlen),fp) == 0 )
error(E_FORMAT,"zm_load");
A = zm_get((unsigned)(mat.m),(unsigned)(mat.n));
for ( i = 0; i < A->m*A->n; i++ )
{
if ( p_flag == DOUBLE_PREC )
fread(&d_temp,sizeof(double),1,fp);
else
{
fread(&f_temp,sizeof(float),1,fp);
d_temp = f_temp;
}
if ( o_flag == ROW_ORDER )
A->me[i / A->n][i % A->n].re = d_temp;
else if ( o_flag == COL_ORDER )
A->me[i % A->m][i / A->m].re = d_temp;
else
error(E_FORMAT,"zm_load");
}
if ( mat.imag ) /* skip imaginary part */
for ( i = 0; i < A->m*A->n; i++ )
{
if ( p_flag == DOUBLE_PREC )
fread(&d_temp,sizeof(double),1,fp);
else
{
fread(&f_temp,sizeof(float),1,fp);
d_temp = f_temp;
}
if ( o_flag == ROW_ORDER )
A->me[i / A->n][i % A->n].im = d_temp;
else if ( o_flag == COL_ORDER )
A->me[i % A->m][i / A->m].im = d_temp;
else
error(E_FORMAT,"zm_load");
}
return A;
}
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