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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 1.1 1994/01/13 04:24:57 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 */
- 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);
-
- 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;
- 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;
- }
-
-