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rd_ipxs.c
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Wed, Dec 11, 13:06

rd_ipxs.c
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/***************************************************************/
/* */
/* FUNCTION: read_data */
/* */
/* PURPOSE: reads data from a file */
/* */
/* INPUT: file = output file */
/* dim = dimension of the data */
/* size = number of data in each dimension */
/* type = type of data (int,double,double) */
/* mode = mode of storage (bin,txt) */
/* nature = nature of data (real,complex) */
/* comments = file comments */
/* */
/* VERSION: 1.0 May 1992 */
/* */
/* AUTHOR: Karim BOUYOUCEF */
/* */
/***************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "lt.h"
/**************************************************************/
long int rd_ipxs(char *file,
int dim_r,
int size[4],
char *type_r,
char mode[4],
char *nature_r,
char comments[1024])
{
/**************** declarations **************************/
FILE *fp;
register int i,j;
auto int dim;
auto char type[8];
auto char nature[8];
auto int **square_i_real;
auto double *vector_f_real,**square_f_real;
/***************** verification du format du fichier *****************/
if ((fp=fopen(file,"r")) != NULL)
{
fscanf(fp,"%d\n",&dim);
for (i=0;i<dim;i++)
fscanf(fp,"%d\n",&size[i]);
fscanf(fp,"%s %s %s\n",type,mode,nature);
fgets(comments,1024,fp);
fscanf(fp,"\n");
}
else
{
fprintf(stderr,"\n\nFATAL ERROR reading file %s that doesn't exist\n",file);
exit(-1);
}
fclose(fp);
if (dim_r != dim)
{
fprintf(stderr,"\nFATAL ERROR file %s must be of dimension %d\n",file,dim_r);
exit(-1);
}
if (strcmp(type,type_r) != 0)
{
fprintf(stderr,"\n\nFATAL ERROR file %s must be of type %s\n",file,type_r);
exit(-1);
}
if (strcmp(nature,nature_r) != 0)
{
fprintf(stderr,"\n\nFATAL ERROR file %s must be of natue %s\n",file,nature_r);
exit(-1);
}
/******************** lecture du fichier ***************************/
fp=fopen(file,"r");
fscanf(fp,"%d\n",&dim);
for (i=0;i<dim;i++)
fscanf(fp,"%d\n",&size[i]);
fscanf(fp,"%s %s %s\n",type,mode,nature);
fgets(comments,1024,fp);
switch(dim)
{
case 1: /**************** signal 1D ***********************************/
if(strcmp(mode,"bin") == 0)
{
if ((strcmp(type,"double") == 0) && (strcmp(nature,"real") ==0))
{
vector_f_real = (double *)malloc(size[0]*sizeof(double));
fread(vector_f_real,sizeof(double),size[0],fp);
return((long int)vector_f_real);
}
}
else if (strcmp(mode,"txt") == 0)
{
if ((strcmp(type,"double") == 0) && (strcmp(nature,"real") == 0))
{
vector_f_real = (double *)malloc(size[0]*sizeof(double));
for (i=0;i<size[0];i++)
fscanf(fp,"%lf\n",&vector_f_real[i]);
return((long int)vector_f_real);
}
}
else
{
fprintf(stderr,"\n\nFATAL ERROR file %s have unknown mode %s\n",file,mode);
exit(-1);
}
break;
case 2: /************ image 2D ************************/
if(strcmp(mode,"bin") == 0)
{
if ((strcmp(type,"int") == 0) && (strcmp(nature,"real") == 0))
{
square_i_real = (int **)alloc_square_int(size[0],size[1]);
for (i=0;i<size[0];i++)
fread(square_i_real[i],sizeof(int),size[1],fp);
return((long int)square_i_real);
}
if ((strcmp(type,"double") == 0) && (strcmp(nature,"real") == 0))
{
square_f_real = (double **)alloc_square_double(size[0],size[1]);
for (i=0;i<size[0];i++)
fread(square_f_real[i],sizeof(double),size[1],fp);
return((long int)square_f_real);
}
}
else if(strcmp(mode,"txt") == 0)
{
if ((strcmp(type,"int") == 0) && (strcmp(nature,"real") == 0))
{
square_i_real = (int **)alloc_square_int(size[0],size[1]);
for (i=0;i<size[0];i++)
for (j=0;j<size[1];j++)
fscanf(fp,"%d\n",&square_i_real[i][j]);
return((long int)square_i_real);
}
if ((strcmp(type,"double") == 0) && (strcmp(nature,"real") == 0))
{
square_f_real = (double **)alloc_square_double(size[0],size[1]);
for (i=0;i<size[0];i++)
for (j=0;j<size[1];j++)
fscanf(fp,"%lf\n",&square_f_real[i][j]);
return((long int)square_f_real);
}
}
else
{
fprintf(stderr,"\n\nFATAL ERROR file %s have unknown mode %s\n",file,mode);
exit(-1);
}
break;
default : /*************** dimension > 2 ***************/
fprintf(stderr,"\nFATAL ERROR file %s must be of dimension %d\n",file,dim_r);
exit(-1);
break;
}
return 0;
}

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