221 lines
4.6 KiB
C
221 lines
4.6 KiB
C
/* @(#) Programs for allocating and freeing matrices
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* @(#) pages 705- of numerical recipes in C 1998
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* @(#)
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*/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif /*HAVE_CONFIG_H*/
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#include <glib/gi18n-lib.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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#include <vips/vips.h>
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#include <vips/vips7compat.h>
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#define TINY 1.0e-200
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/* @(#) Allocates and returns an pointer at the beginning of
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* @(#) an integer array array[nl,nh] or
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* @(#) float array array[nl,nh] or
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* @(#) double array array[nl,nh]
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* @(#)
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* @(#) Right call
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* @(#) int *im_ivector(nl, nh)
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* @(#) int nl, nh;
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* @(#) returns a pointer to an int array or NULL on error
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* @(#)
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* @(#) Right call
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* @(#) float *im_fvector(nl, nh)
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* @(#) int nl, nh;
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* @(#) returns a pointer to a float array or NULL on error
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* @(#)
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* @(#) Right call
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* @(#) double *im_dvector(nl, nh)
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* @(#) int nl, nh;
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* @(#) returns a pointer to a double array or NULL on error
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* @(#)
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* @(#) The following functions free the array allocated by the functions above
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* @(#)
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* @(#) void im_free_ivector(v, nl, nh)
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* @(#) int *v;
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* @(#) int nl, nh;
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* @(#)
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* @(#) void im_free_fvector(v, nl, nh)
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* @(#) float *v;
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* @(#) int nl, nh;
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* @(#)
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* @(#) void im_free_dvector(v, nl, nh)
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* @(#) double *v;
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* @(#) int nl, nh;
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* @(#)
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*/
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int *
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im_ivector(int nl, int nh)
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{
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int *v;
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v = (int *)im_malloc(NULL,(unsigned)(nh - nl + 1) * sizeof(int));
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if (v == NULL)
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return(NULL);
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else
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return(v-nl);
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}
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float *im_fvector(int nl, int nh)
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{
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float *v;
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v = (float *)im_malloc(NULL,(unsigned)(nh - nl + 1) * sizeof(float));
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if (v == NULL)
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return(NULL);
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else
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return(v-nl);
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}
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double *im_dvector(int nl, int nh)
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{
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double *v;
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v = (double *)im_malloc(NULL,(unsigned)(nh - nl + 1) * sizeof(double));
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if (v == NULL)
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return(NULL);
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else
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return(v-nl);
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}
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void im_free_ivector(int *v, int nl, int nh)
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{
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im_free((char*) (v+nl));
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}
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void im_free_fvector(float *v, int nl, int nh)
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{
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im_free((char*) (v+nl));
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}
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void im_free_dvector(double *v, int nl, int nh)
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{
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im_free((char*) (v+nl));
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}
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/* @(#) Allocates and returns an pointer at the beginning of
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* @(#) an int, float or double, two dimensional matrix[nrl,nrh][ncl,nch]
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* @(#)
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* @(#) Right call
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* @(#) int **im_imat_alloc(nrl, nrh, ncl, nch)
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* @(#) int nrl, nrh, ncl, nch;
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* @(#) returns a pointer to an int matrix or NULL on error
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* @(#)
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* @(#) float **im_fmat_alloc(nrl, nrh, ncl, nch)
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* @(#) int nrl, nrh, ncl, nch;
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* @(#) returns a pointer to an int matrix or NULL on error
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* @(#)
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* @(#) double **im_dmat_alloc(nrl, nrh, ncl, nch)
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* @(#) int nrl, nrh, ncl, nch;
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* @(#) returns a pointer to a double matrix or NULL on error
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* @(#)
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* @(#) The following routines free the matrix allocated by the functions above
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* @(#) void im_free_imat(m, nrl, nrh, ncl, nch)
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* @(#) int **m;
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* @(#) int nrl, nrh, ncl, nch;
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* @(#)
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* @(#) void im_free_fmat(m, nrl, nrh, ncl, nch)
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* @(#) float **m;
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* @(#) int nrl, nrh, ncl, nch;
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* @(#)
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* @(#) void im_free_dmat(m, nrl, nrh, ncl, nch)
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* @(#) double **m;
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* @(#) int nrl, nrh, ncl, nch;
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* @(#)
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*/
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int **im_imat_alloc(int nrl, int nrh, int ncl, int nch)
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{
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int i;
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int **m;
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m = (int**)im_malloc(NULL,(unsigned)(nrh-nrl+1) * sizeof(int *));
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if (m == NULL)
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return(NULL);
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m -= nrl;
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for (i=nrl; i<=nrh; i++)
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{
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m[i] = (int *)im_malloc(NULL,(unsigned) (nch-ncl+1) * sizeof(int));
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if (m[i] == NULL)
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return(NULL);
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m[i] -= ncl;
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}
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return (m);
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}
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void im_free_imat(int **m, int nrl, int nrh, int ncl, int nch)
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{
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int i;
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for (i=nrh; i>=nrl; i--)
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im_free((char*) (m[i]+ncl));
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im_free((char*) (m+nrl));
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}
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float **im_fmat_alloc(int nrl, int nrh, int ncl, int nch)
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{
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int i;
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float **m;
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m = (float**)im_malloc(NULL,(unsigned)(nrh-nrl+1) * sizeof(float *));
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if (m == NULL)
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return(NULL);
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m -= nrl;
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for (i=nrl; i<=nrh; i++)
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{
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m[i] = (float *)im_malloc(NULL,(unsigned) (nch-ncl+1) * sizeof(float));
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if (m[i] == NULL)
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return(NULL);
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m[i] -= ncl;
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}
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return (m);
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}
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void im_free_fmat(float **m, int nrl, int nrh, int ncl, int nch)
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{
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int i;
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for (i=nrh; i>=nrl; i--)
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im_free((char*) (m[i]+ncl));
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im_free((char*) (m+nrl));
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}
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double **im_dmat_alloc(int nrl, int nrh, int ncl, int nch)
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{
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int i;
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double **m;
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m = (double**)im_malloc(NULL,(unsigned)(nrh-nrl+1) * sizeof(double *));
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if (m == NULL)
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return(NULL);
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m -= nrl;
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for (i=nrl; i<=nrh; i++)
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{
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m[i] = (double *)im_malloc(NULL,(unsigned) (nch-ncl+1) * sizeof(double));
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if (m[i] == NULL)
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return(NULL);
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m[i] -= ncl;
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}
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return (m);
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}
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void im_free_dmat(double **m, int nrl, int nrh, int ncl, int nch)
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{
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int i;
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for (i=nrh; i>=nrl; i--)
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im_free((char*) (m[i]+ncl));
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im_free((char*) (m+nrl));
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}
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