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nrutil.c
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Tue, Dec 3, 06:07

nrutil.c
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#include <stdio.h>
#include <stdlib.h>
#include "lt.h"
void nrerror(char *error_text)
{
fprintf(stderr,"Numerical Recipes run-time error...\n");
fprintf(stderr,"%s\n",error_text);
fprintf(stderr,"...now exiting to system...\n");
exit(1);
}
double *vector(int nl,int nh)
{
double *v;
v=(double *)malloc((unsigned) (nh-nl+1)*sizeof(double));
if (!v) nrerror("allocation failure in vector()");
return v-nl;
}
int *ivector(int nl,int nh)
{
int *v;
v=(int *)malloc((unsigned) (nh-nl+1)*sizeof(int));
if (!v) nrerror("allocation failure in ivector()");
return v-nl;
}
double *dvector(int nl,int nh)
{
double *v;
v=(double *)malloc((unsigned) (nh-nl+1)*sizeof(double));
if (!v) nrerror("allocation failure in dvector()");
return v-nl;
}
double **matrix(int nrl,int nrh,int ncl,int nch)
{
int i;
double **m;
m=(double **) malloc((unsigned) (nrh-nrl+1)*sizeof(double*));
if (!m) nrerror("allocation failure 1 in matrix()");
m -= nrl;
for(i=nrl;i<=nrh;i++) {
m[i]=(double *) malloc((unsigned) (nch-ncl+1)*sizeof(double));
if (!m[i]) nrerror("allocation failure 2 in matrix()");
m[i] -= ncl;
}
return m;
}
double **dmatrix(int nrl,int nrh,int ncl,int nch)
{
int i;
double **m;
m=(double **) malloc((unsigned) (nrh-nrl+1)*sizeof(double*));
if (!m) nrerror("allocation failure 1 in dmatrix()");
m -= nrl;
for(i=nrl;i<=nrh;i++) {
m[i]=(double *) malloc((unsigned) (nch-ncl+1)*sizeof(double));
if (!m[i]) nrerror("allocation failure 2 in dmatrix()");
m[i] -= ncl;
}
return m;
}
int **imatrix(int nrl,int nrh,int ncl,int nch)
{
int i,**m;
m=(int **)malloc((unsigned) (nrh-nrl+1)*sizeof(int*));
if (!m) nrerror("allocation failure 1 in imatrix()");
m -= nrl;
for(i=nrl;i<=nrh;i++) {
m[i]=(int *)malloc((unsigned) (nch-ncl+1)*sizeof(int));
if (!m[i]) nrerror("allocation failure 2 in imatrix()");
m[i] -= ncl;
}
return m;
}
double **submatrix(double **a,int oldrl,int oldrh,int oldcl,int newrl,int newcl)
{
int i,j;
double **m;
m=(double **) malloc((unsigned) (oldrh-oldrl+1)*sizeof(double*));
if (!m) nrerror("allocation failure in submatrix()");
m -= newrl;
for(i=oldrl,j=newrl;i<=oldrh;i++,j++) m[j]=a[i]+oldcl-newcl;
return m;
}
void free_vector(double *v,int nl)
{
free((char*) (v+nl));
}
void free_ivector(int *v,int nl)
{
free((char*) (v+nl));
}
void free_dvector(double *v,int nl)
{
free((char*) (v+nl));
}
void free_matrix(double **m,int nrl,int nrh,int ncl)
{
int i;
for(i=nrh;i>=nrl;i--) free((char*) (m[i]+ncl));
free((char*) (m+nrl));
}
void free_dmatrix(double **m,int nrl,int nrh,int ncl)
{
int i;
for(i=nrh;i>=nrl;i--) free((char*) (m[i]+ncl));
free((char*) (m+nrl));
}
void free_imatrix(int **m,int nrl,int nrh,int ncl)
{
int i;
for(i=nrh;i>=nrl;i--) free((char*) (m[i]+ncl));
free((char*) (m+nrl));
}
void free_submatrix(double **b,int nrl)
{
free((char*) (b+nrl));
}
double **convert_matrix(double *a,int nrl,int nrh,int ncl,int nch)
{
int i,j,nrow,ncol;
double **m;
nrow=nrh-nrl+1;
ncol=nch-ncl+1;
m = (double **) malloc((unsigned) (nrow)*sizeof(double*));
if (!m) nrerror("allocation failure in convert_matrix()");
m -= nrl;
for(i=0,j=nrl;i<=nrow-1;i++,j++) m[j]=a+ncol*i-ncl;
return m;
}
void free_convert_matrix(double *b,int nrl)
{
free((char*) (b+nrl));
}

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