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/* @(#) Programs for allocating and freeing matrices
* @(#) pages 705- of numerical recipes in C 1998
* @(#)
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif /*HAVE_CONFIG_H*/
#include <vips/intl.h>
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <vips/vips.h>
#define TINY 1.0e-200
/* @(#) Allocates and returns an pointer at the beginning of
* @(#) an integer array array[nl,nh] or
* @(#) float array array[nl,nh] or
* @(#) double array array[nl,nh]
* @(#)
* @(#) Right call
* @(#) int *im_ivector(nl, nh)
* @(#) int nl, nh;
* @(#) returns a pointer to an int array or NULL on error
* @(#)
* @(#) Right call
* @(#) float *im_fvector(nl, nh)
* @(#) int nl, nh;
* @(#) returns a pointer to a float array or NULL on error
* @(#)
* @(#) Right call
* @(#) double *im_dvector(nl, nh)
* @(#) int nl, nh;
* @(#) returns a pointer to a double array or NULL on error
* @(#)
* @(#) The following functions free the array allocated by the functions above
* @(#)
* @(#) void im_free_ivector(v, nl, nh)
* @(#) int *v;
* @(#) int nl, nh;
* @(#)
* @(#) void im_free_fvector(v, nl, nh)
* @(#) float *v;
* @(#) int nl, nh;
* @(#)
* @(#) void im_free_dvector(v, nl, nh)
* @(#) double *v;
* @(#) int nl, nh;
* @(#)
*/
int *
im_ivector(int nl, int nh)
{
int *v;
v = (int *)im_malloc(NULL,(unsigned)(nh - nl + 1) * sizeof(int));
if (v == NULL)
return(NULL);
else
return(v-nl);
}
float *im_fvector(int nl, int nh)
{
float *v;
v = (float *)im_malloc(NULL,(unsigned)(nh - nl + 1) * sizeof(float));
if (v == NULL)
return(NULL);
else
return(v-nl);
}
double *im_dvector(int nl, int nh)
{
double *v;
v = (double *)im_malloc(NULL,(unsigned)(nh - nl + 1) * sizeof(double));
if (v == NULL)
return(NULL);
else
return(v-nl);
}
void im_free_ivector(int *v, int nl, int nh)
{
im_free((char*) (v+nl));
}
void im_free_fvector(float *v, int nl, int nh)
{
im_free((char*) (v+nl));
}
void im_free_dvector(double *v, int nl, int nh)
{
im_free((char*) (v+nl));
}
/* @(#) Allocates and returns an pointer at the beginning of
* @(#) an int, float or double, two dimensional matrix[nrl,nrh][ncl,nch]
* @(#)
* @(#) Right call
* @(#) int **im_imat_alloc(nrl, nrh, ncl, nch)
* @(#) int nrl, nrh, ncl, nch;
* @(#) returns a pointer to an int matrix or NULL on error
* @(#)
* @(#) float **im_fmat_alloc(nrl, nrh, ncl, nch)
* @(#) int nrl, nrh, ncl, nch;
* @(#) returns a pointer to an int matrix or NULL on error
* @(#)
* @(#) double **im_dmat_alloc(nrl, nrh, ncl, nch)
* @(#) int nrl, nrh, ncl, nch;
* @(#) returns a pointer to a double matrix or NULL on error
* @(#)
* @(#) The following routines free the matrix allocated by the functions above
* @(#) void im_free_imat(m, nrl, nrh, ncl, nch)
* @(#) int **m;
* @(#) int nrl, nrh, ncl, nch;
* @(#)
* @(#) void im_free_fmat(m, nrl, nrh, ncl, nch)
* @(#) float **m;
* @(#) int nrl, nrh, ncl, nch;
* @(#)
* @(#) void im_free_dmat(m, nrl, nrh, ncl, nch)
* @(#) double **m;
* @(#) int nrl, nrh, ncl, nch;
* @(#)
*/
int **im_imat_alloc(int nrl, int nrh, int ncl, int nch)
{
int i;
int **m;
m = (int**)im_malloc(NULL,(unsigned)(nrh-nrl+1) * sizeof(int *));
if (m == NULL)
return(NULL);
m -= nrl;
for (i=nrl; i<=nrh; i++)
{
m[i] = (int *)im_malloc(NULL,(unsigned) (nch-ncl+1) * sizeof(int));
if (m[i] == NULL)
return(NULL);
m[i] -= ncl;
}
return (m);
}
void im_free_imat(int **m, int nrl, int nrh, int ncl, int nch)
{
int i;
for (i=nrh; i>=nrl; i--)
im_free((char*) (m[i]+ncl));
im_free((char*) (m+nrl));
}
float **im_fmat_alloc(int nrl, int nrh, int ncl, int nch)
{
int i;
float **m;
m = (float**)im_malloc(NULL,(unsigned)(nrh-nrl+1) * sizeof(float *));
if (m == NULL)
return(NULL);
m -= nrl;
for (i=nrl; i<=nrh; i++)
{
m[i] = (float *)im_malloc(NULL,(unsigned) (nch-ncl+1) * sizeof(float));
if (m[i] == NULL)
return(NULL);
m[i] -= ncl;
}
return (m);
}
void im_free_fmat(float **m, int nrl, int nrh, int ncl, int nch)
{
int i;
for (i=nrh; i>=nrl; i--)
im_free((char*) (m[i]+ncl));
im_free((char*) (m+nrl));
}
double **im_dmat_alloc(int nrl, int nrh, int ncl, int nch)
{
int i;
double **m;
m = (double**)im_malloc(NULL,(unsigned)(nrh-nrl+1) * sizeof(double *));
if (m == NULL)
return(NULL);
m -= nrl;
for (i=nrl; i<=nrh; i++)
{
m[i] = (double *)im_malloc(NULL,(unsigned) (nch-ncl+1) * sizeof(double));
if (m[i] == NULL)
return(NULL);
m[i] -= ncl;
}
return (m);
}
void im_free_dmat(double **m, int nrl, int nrh, int ncl, int nch)
{
int i;
for (i=nrh; i>=nrl; i--)
im_free((char*) (m[i]+ncl));
im_free((char*) (m+nrl));
}
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