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rdf_ipx.c
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Thu, Dec 26, 08:53

rdf_ipx.c
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/*
*
* FUNCTION: rdf_ipx
*
* PURPOSE: reads data from a file and convert it in a double area
*
* INPUT: file = output file
* dim = dimension of the data
* nx,ny = 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: 2.0 Mars 1994
*
* AUTHOR: JP Kneib
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "lt.h"
/**************************************************************/
double **rdf_ipx( char *file,
int *nx,int *ny,
char *type,char *mode,char *nature,char comments[1024],
double *xmin,double *xmax,double *ymin,double *ymax)
{
/**************** declarations **************************/
FILE *fp;
register int i,j;
auto int dim,ival;
auto double dval;
auto int *vect_i;
auto double *vect_d;
auto double **square_f_real;
/***************** verification du format du fichier *****************/
if ((fp=fopen(file,"r")) != NULL)
{
fscanf(fp,"%d%lf%lf%lf%lf\n",&dim,xmin,xmax,ymin,ymax);
fscanf(fp,"%d\n",nx);
fscanf(fp,"%d\n",ny);
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);
}
square_f_real = (double **)alloc_square_int(*nx,*ny);
/************ image 2D ************************/
if(strcmp(mode,"bin") == 0)
{
if ((strcmp(type,"int") == 0) && (strcmp(nature,"real") == 0))
{
vect_i=(int *)malloc(*ny);
for (i=0;i<*nx;i++)
{
fread(vect_i,sizeof(int),*ny,fp);
for (j=0;j<*ny;j++)
square_f_real[i][j]=(double) vect_i[j];
}
free(vect_i);
}
if ((strcmp(type,"double") == 0) && (strcmp(nature,"real") == 0))
{
for (i=0;i<*nx;i++)
fread(square_f_real[i],sizeof(double),*ny,fp);
}
if ((strcmp(type,"double") == 0) && (strcmp(nature,"real") == 0))
{
vect_d = (double *)malloc(*ny);
for (i=0;i<*nx;i++)
{
fread(vect_d,sizeof(double),*ny,fp);
for (j=0;j<*ny;j++)
square_f_real[i][j]=(double) vect_d[j];
}
free(vect_d);
}
}
else if(strcmp(mode,"txt") == 0)
{
if ((strcmp(type,"int") == 0) && (strcmp(nature,"real") == 0))
{
for (i=0;i<*nx;i++)
for (j=0;j<*ny;j++)
{
fscanf(fp,"%d\n",&ival);
square_f_real[i][j]=(double) ival;
}
}
if ((strcmp(type,"double") == 0) && (strcmp(nature,"real") == 0))
{
for (i=0;i<*nx;i++)
for (j=0;j<*ny;j++)
fscanf(fp,"%lf\n",&square_f_real[i][j]);
}
if ((strcmp(type,"double") == 0) && (strcmp(nature,"real") == 0))
{
for (i=0;i<*nx;i++)
for (j=0;j<*ny;j++)
{
fscanf(fp,"%lf\n",&dval);
square_f_real[i][j]=(double) dval;
}
}
}
else
{
fprintf(stderr,"\n\nFATAL ERROR file %s have unknown mode %s\n",file,mode);
exit(-1);
}
return((double **)square_f_real);
}

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