source: CIVL/examples/compare/GaussianElimination/nrutil.c

#if defined(__STDC__) || defined(ANSI) || defined(NRANSI) /* ANSI */

#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#define NR_END 1
#define FREE_ARG char*

void nrerror(char error_text[])
/* Numerical Recipes standard error handler */
{
        fprintf(stderr,"Numerical Recipes run-time error...\n");
        fprintf(stderr,"%s\n",error_text);
        fprintf(stderr,"...now exiting to system...\n");
        exit(1);
}

float *vector(long nl, long nh)
/* allocate a float vector with subscript range v[nl..nh] */
{
        float *v;

        v=(float *)malloc((size_t) ((nh-nl+1+NR_END)*sizeof(float)));
        if (!v) nrerror("allocation failure in vector()");
        return v-nl+NR_END;
}

int *ivector(long nl, long nh)
/* allocate an int vector with subscript range v[nl..nh] */
{
        int *v;

        v=(int *)malloc((size_t) ((nh-nl+1+NR_END)*sizeof(int)));
        if (!v) nrerror("allocation failure in ivector()");
        return v-nl+NR_END;
}

unsigned char *cvector(long nl, long nh)
/* allocate an unsigned char vector with subscript range v[nl..nh] */
{
        unsigned char *v;

        v=(unsigned char *)malloc((size_t) ((nh-nl+1+NR_END)*sizeof(unsigned char)));
        if (!v) nrerror("allocation failure in cvector()");
        return v-nl+NR_END;
}

unsigned long *lvector(long nl, long nh)
/* allocate an unsigned long vector with subscript range v[nl..nh] */
{
        unsigned long *v;

        v=(unsigned long *)malloc((size_t) ((nh-nl+1+NR_END)*sizeof(long)));
        if (!v) nrerror("allocation failure in lvector()");
        return v-nl+NR_END;
}

double *dvector(long nl, long nh)
/* allocate a double vector with subscript range v[nl..nh] */
{
        double *v;

        v=(double *)malloc((size_t) ((nh-nl+1+NR_END)*sizeof(double)));
        if (!v) nrerror("allocation failure in dvector()");
        return v-nl+NR_END;
}

float **matrix(long nrl, long nrh, long ncl, long nch)
/* allocate a float matrix with subscript range m[nrl..nrh][ncl..nch] */
{
        long i, nrow=nrh-nrl+1,ncol=nch-ncl+1;
        float **m;

        /* allocate pointers to rows */
        m=(float **) malloc((size_t)((nrow+NR_END)*sizeof(float*)));
        if (!m) nrerror("allocation failure 1 in matrix()");
        m += NR_END;
        m -= nrl;

        /* allocate rows and set pointers to them */
        m[nrl]=(float *) malloc((size_t)((nrow*ncol+NR_END)*sizeof(float)));
        if (!m[nrl]) nrerror("allocation failure 2 in matrix()");
        m[nrl] += NR_END;
        m[nrl] -= ncl;

        for(i=nrl+1;i<=nrh;i++) m[i]=m[i-1]+ncol;

        /* return pointer to array of pointers to rows */
        return m;
}

double **dmatrix(long nrl, long nrh, long ncl, long nch)
/* allocate a double matrix with subscript range m[nrl..nrh][ncl..nch] */
{
        long i, nrow=nrh-nrl+1,ncol=nch-ncl+1;
        double **m;

        /* allocate pointers to rows */
        m=(double **) malloc((size_t)((nrow+NR_END)*sizeof(double*)));
        if (!m) nrerror("allocation failure 1 in matrix()");
        m += NR_END;
        m -= nrl;

        /* allocate rows and set pointers to them */
        m[nrl]=(double *) malloc((size_t)((nrow*ncol+NR_END)*sizeof(double)));
        if (!m[nrl]) nrerror("allocation failure 2 in matrix()");
        m[nrl] += NR_END;
        m[nrl] -= ncl;

        for(i=nrl+1;i<=nrh;i++) m[i]=m[i-1]+ncol;

        /* return pointer to array of pointers to rows */
        return m;
}

int **imatrix(long nrl, long nrh, long ncl, long nch)
/* allocate a int matrix with subscript range m[nrl..nrh][ncl..nch] */
{
        long i, nrow=nrh-nrl+1,ncol=nch-ncl+1;
        int **m;

        /* allocate pointers to rows */
        m=(int **) malloc((size_t)((nrow+NR_END)*sizeof(int*)));
        if (!m) nrerror("allocation failure 1 in matrix()");
        m += NR_END;
        m -= nrl;


        /* allocate rows and set pointers to them */
        m[nrl]=(int *) malloc((size_t)((nrow*ncol+NR_END)*sizeof(int)));
        if (!m[nrl]) nrerror("allocation failure 2 in matrix()");
        m[nrl] += NR_END;
        m[nrl] -= ncl;

        for(i=nrl+1;i<=nrh;i++) m[i]=m[i-1]+ncol;

        /* return pointer to array of pointers to rows */
        return m;
}

float **submatrix(float **a, long oldrl, long oldrh, long oldcl, long oldch,
        long newrl, long newcl)
/* point a submatrix [newrl..][newcl..] to a[oldrl..oldrh][oldcl..oldch] */
{
        long i,j,nrow=oldrh-oldrl+1,ncol=oldcl-newcl;
        float **m;

        /* allocate array of pointers to rows */
        m=(float **) malloc((size_t) ((nrow+NR_END)*sizeof(float*)));
        if (!m) nrerror("allocation failure in submatrix()");
        m += NR_END;
        m -= newrl;

        /* set pointers to rows */
        for(i=oldrl,j=newrl;i<=oldrh;i++,j++) m[j]=a[i]+ncol;

        /* return pointer to array of pointers to rows */
        return m;
}

float **convert_matrix(float *a, long nrl, long nrh, long ncl, long nch)
/* allocate a float matrix m[nrl..nrh][ncl..nch] that points to the matrix
declared in the standard C manner as a[nrow][ncol], where nrow=nrh-nrl+1
and ncol=nch-ncl+1. The routine should be called with the address
&a[0][0] as the first argument. */
{
        long i,j,nrow=nrh-nrl+1,ncol=nch-ncl+1;
        float **m;

        /* allocate pointers to rows */
        m=(float **) malloc((size_t) ((nrow+NR_END)*sizeof(float*)));
        if (!m) nrerror("allocation failure in convert_matrix()");
        m += NR_END;
        m -= nrl;

        /* set pointers to rows */
        m[nrl]=a-ncl;
        for(i=1,j=nrl+1;i<nrow;i++,j++) m[j]=m[j-1]+ncol;
        /* return pointer to array of pointers to rows */
        return m;
}

float ***f3tensor(long nrl, long nrh, long ncl, long nch, long ndl, long ndh)
/* allocate a float 3tensor with range t[nrl..nrh][ncl..nch][ndl..ndh] */
{
        long i,j,nrow=nrh-nrl+1,ncol=nch-ncl+1,ndep=ndh-ndl+1;
        float ***t;

        /* allocate pointers to pointers to rows */
        t=(float ***) malloc((size_t)((nrow+NR_END)*sizeof(float**)));
        if (!t) nrerror("allocation failure 1 in f3tensor()");
        t += NR_END;
        t -= nrl;

        /* allocate pointers to rows and set pointers to them */
        t[nrl]=(float **) malloc((size_t)((nrow*ncol+NR_END)*sizeof(float*)));
        if (!t[nrl]) nrerror("allocation failure 2 in f3tensor()");
        t[nrl] += NR_END;
        t[nrl] -= ncl;

        /* allocate rows and set pointers to them */
        t[nrl][ncl]=(float *) malloc((size_t)((nrow*ncol*ndep+NR_END)*sizeof(float)));
        if (!t[nrl][ncl]) nrerror("allocation failure 3 in f3tensor()");
        t[nrl][ncl] += NR_END;
        t[nrl][ncl] -= ndl;

        for(j=ncl+1;j<=nch;j++) t[nrl][j]=t[nrl][j-1]+ndep;
        for(i=nrl+1;i<=nrh;i++) {
                t[i]=t[i-1]+ncol;
                t[i][ncl]=t[i-1][ncl]+ncol*ndep;
                for(j=ncl+1;j<=nch;j++) t[i][j]=t[i][j-1]+ndep;
        }

        /* return pointer to array of pointers to rows */
        return t;
}

void free_vector(float *v, long nl, long nh)
/* free a float vector allocated with vector() */
{
        free((FREE_ARG) (v+nl-NR_END));
}

void free_ivector(int *v, long nl, long nh)
/* free an int vector allocated with ivector() */
{
        free((FREE_ARG) (v+nl-NR_END));
}

void free_cvector(unsigned char *v, long nl, long nh)
/* free an unsigned char vector allocated with cvector() */
{
        free((FREE_ARG) (v+nl-NR_END));
}

void free_lvector(unsigned long *v, long nl, long nh)
/* free an unsigned long vector allocated with lvector() */
{
        free((FREE_ARG) (v+nl-NR_END));
}

void free_dvector(double *v, long nl, long nh)
/* free a double vector allocated with dvector() */
{
        free((FREE_ARG) (v+nl-NR_END));
}

void free_matrix(float **m, long nrl, long nrh, long ncl, long nch)
/* free a float matrix allocated by matrix() */
{
        free((FREE_ARG) (m[nrl]+ncl-NR_END));
        free((FREE_ARG) (m+nrl-NR_END));
}

void free_dmatrix(double **m, long nrl, long nrh, long ncl, long nch)
/* free a double matrix allocated by dmatrix() */
{
        free((FREE_ARG) (m[nrl]+ncl-NR_END));
        free((FREE_ARG) (m+nrl-NR_END));
}

void free_imatrix(int **m, long nrl, long nrh, long ncl, long nch)
/* free an int matrix allocated by imatrix() */
{
        free((FREE_ARG) (m[nrl]+ncl-NR_END));
        free((FREE_ARG) (m+nrl-NR_END));
}

void free_submatrix(float **b, long nrl, long nrh, long ncl, long nch)
/* free a submatrix allocated by submatrix() */
{
        free((FREE_ARG) (b+nrl-NR_END));
}

void free_convert_matrix(float **b, long nrl, long nrh, long ncl, long nch)
/* free a matrix allocated by convert_matrix() */
{
        free((FREE_ARG) (b+nrl-NR_END));
}

void free_f3tensor(float ***t, long nrl, long nrh, long ncl, long nch,
        long ndl, long ndh)
/* free a float f3tensor allocated by f3tensor() */
{
        free((FREE_ARG) (t[nrl][ncl]+ndl-NR_END));
        free((FREE_ARG) (t[nrl]+ncl-NR_END));
        free((FREE_ARG) (t+nrl-NR_END));
}

#else /* ANSI */
/* traditional - K&R */

#include <stdio.h>
#define NR_END 1
#define FREE_ARG char*

void nrerror(error_text)
char error_text[];
/* Numerical Recipes standard error handler */
{
        void exit();

        fprintf(stderr,"Numerical Recipes run-time error...\n");
        fprintf(stderr,"%s\n",error_text);
        fprintf(stderr,"...now exiting to system...\n");
        exit(1);
}

float *vector(nl,nh)
long nh,nl;
/* allocate a float vector with subscript range v[nl..nh] */
{
        float *v;

        v=(float *)malloc((unsigned int) ((nh-nl+1+NR_END)*sizeof(float)));
        if (!v) nrerror("allocation failure in vector()");
        return v-nl+NR_END;
}

int *ivector(nl,nh)
long nh,nl;
/* allocate an int vector with subscript range v[nl..nh] */
{
        int *v;

        v=(int *)malloc((unsigned int) ((nh-nl+1+NR_END)*sizeof(int)));
        if (!v) nrerror("allocation failure in ivector()");
        return v-nl+NR_END;
}

unsigned char *cvector(nl,nh)
long nh,nl;
/* allocate an unsigned char vector with subscript range v[nl..nh] */
{
        unsigned char *v;

        v=(unsigned char *)malloc((unsigned int) ((nh-nl+1+NR_END)*sizeof(unsigned char)));
        if (!v) nrerror("allocation failure in cvector()");
        return v-nl+NR_END;
}

unsigned long *lvector(nl,nh)
long nh,nl;
/* allocate an unsigned long vector with subscript range v[nl..nh] */
{
        unsigned long *v;

        v=(unsigned long *)malloc((unsigned int) ((nh-nl+1+NR_END)*sizeof(long)));
        if (!v) nrerror("allocation failure in lvector()");
        return v-nl+NR_END;
}

double *dvector(nl,nh)
long nh,nl;
/* allocate a double vector with subscript range v[nl..nh] */
{
        double *v;

        v=(double *)malloc((unsigned int) ((nh-nl+1+NR_END)*sizeof(double)));
        if (!v) nrerror("allocation failure in dvector()");
        return v-nl+NR_END;
}

float **matrix(nrl,nrh,ncl,nch)
long nch,ncl,nrh,nrl;
/* allocate a float matrix with subscript range m[nrl..nrh][ncl..nch] */
{
        long i, nrow=nrh-nrl+1,ncol=nch-ncl+1;
        float **m;

        /* allocate pointers to rows */
        m=(float **) malloc((unsigned int)((nrow+NR_END)*sizeof(float*)));
        if (!m) nrerror("allocation failure 1 in matrix()");
        m += NR_END;
        m -= nrl;

        /* allocate rows and set pointers to them */
        m[nrl]=(float *) malloc((unsigned int)((nrow*ncol+NR_END)*sizeof(float)));
        if (!m[nrl]) nrerror("allocation failure 2 in matrix()");
        m[nrl] += NR_END;
        m[nrl] -= ncl;

        for(i=nrl+1;i<=nrh;i++) m[i]=m[i-1]+ncol;

        /* return pointer to array of pointers to rows */
        return m;
}

double **dmatrix(nrl,nrh,ncl,nch)
long nch,ncl,nrh,nrl;
/* allocate a double matrix with subscript range m[nrl..nrh][ncl..nch] */
{
        long i, nrow=nrh-nrl+1,ncol=nch-ncl+1;
        double **m;

        /* allocate pointers to rows */
        m=(double **) malloc((unsigned int)((nrow+NR_END)*sizeof(double*)));
        if (!m) nrerror("allocation failure 1 in matrix()");
        m += NR_END;
        m -= nrl;

        /* allocate rows and set pointers to them */
        m[nrl]=(double *) malloc((unsigned int)((nrow*ncol+NR_END)*sizeof(double)));
        if (!m[nrl]) nrerror("allocation failure 2 in matrix()");
        m[nrl] += NR_END;
        m[nrl] -= ncl;

        for(i=nrl+1;i<=nrh;i++) m[i]=m[i-1]+ncol;

        /* return pointer to array of pointers to rows */
        return m;
}

int **imatrix(nrl,nrh,ncl,nch)
long nch,ncl,nrh,nrl;
/* allocate a int matrix with subscript range m[nrl..nrh][ncl..nch] */
{
        long i, nrow=nrh-nrl+1,ncol=nch-ncl+1;
        int **m;

        /* allocate pointers to rows */
        m=(int **) malloc((unsigned int)((nrow+NR_END)*sizeof(int*)));
        if (!m) nrerror("allocation failure 1 in matrix()");
        m += NR_END;
        m -= nrl;


        /* allocate rows and set pointers to them */
        m[nrl]=(int *) malloc((unsigned int)((nrow*ncol+NR_END)*sizeof(int)));
        if (!m[nrl]) nrerror("allocation failure 2 in matrix()");
        m[nrl] += NR_END;
        m[nrl] -= ncl;

        for(i=nrl+1;i<=nrh;i++) m[i]=m[i-1]+ncol;

        /* return pointer to array of pointers to rows */
        return m;
}

float **submatrix(a,oldrl,oldrh,oldcl,oldch,newrl,newcl)
float **a;
long newcl,newrl,oldch,oldcl,oldrh,oldrl;
/* point a submatrix [newrl..][newcl..] to a[oldrl..oldrh][oldcl..oldch] */
{
        long i,j,nrow=oldrh-oldrl+1,ncol=oldcl-newcl;
        float **m;

        /* allocate array of pointers to rows */
        m=(float **) malloc((unsigned int) ((nrow+NR_END)*sizeof(float*)));
        if (!m) nrerror("allocation failure in submatrix()");
        m += NR_END;
        m -= newrl;

        /* set pointers to rows */
        for(i=oldrl,j=newrl;i<=oldrh;i++,j++) m[j]=a[i]+ncol;

        /* return pointer to array of pointers to rows */
        return m;
}

float **convert_matrix(a,nrl,nrh,ncl,nch)
float *a;
long nch,ncl,nrh,nrl;
/* allocate a float matrix m[nrl..nrh][ncl..nch] that points to the matrix
declared in the standard C manner as a[nrow][ncol], where nrow=nrh-nrl+1
and ncol=nch-ncl+1. The routine should be called with the address
&a[0][0] as the first argument. */
{
        long i,j,nrow=nrh-nrl+1,ncol=nch-ncl+1;
        float **m;

        /* allocate pointers to rows */
        m=(float **) malloc((unsigned int) ((nrow+NR_END)*sizeof(float*)));
        if (!m) nrerror("allocation failure in convert_matrix()");
        m += NR_END;
        m -= nrl;

        /* set pointers to rows */
        m[nrl]=a-ncl;
        for(i=1,j=nrl+1;i<nrow;i++,j++) m[j]=m[j-1]+ncol;
        /* return pointer to array of pointers to rows */
        return m;
}

float ***f3tensor(nrl,nrh,ncl,nch,ndl,ndh)
long nch,ncl,ndh,ndl,nrh,nrl;
/* allocate a float 3tensor with range t[nrl..nrh][ncl..nch][ndl..ndh] */
{
        long i,j,nrow=nrh-nrl+1,ncol=nch-ncl+1,ndep=ndh-ndl+1;
        float ***t;

        /* allocate pointers to pointers to rows */
        t=(float ***) malloc((unsigned int)((nrow+NR_END)*sizeof(float**)));
        if (!t) nrerror("allocation failure 1 in f3tensor()");
        t += NR_END;
        t -= nrl;

        /* allocate pointers to rows and set pointers to them */
        t[nrl]=(float **) malloc((unsigned int)((nrow*ncol+NR_END)*sizeof(float*)));
        if (!t[nrl]) nrerror("allocation failure 2 in f3tensor()");
        t[nrl] += NR_END;
        t[nrl] -= ncl;

        /* allocate rows and set pointers to them */
        t[nrl][ncl]=(float *) malloc((unsigned int)((nrow*ncol*ndep+NR_END)*sizeof(float)));
        if (!t[nrl][ncl]) nrerror("allocation failure 3 in f3tensor()");
        t[nrl][ncl] += NR_END;
        t[nrl][ncl] -= ndl;

        for(j=ncl+1;j<=nch;j++) t[nrl][j]=t[nrl][j-1]+ndep;
        for(i=nrl+1;i<=nrh;i++) {
                t[i]=t[i-1]+ncol;
                t[i][ncl]=t[i-1][ncl]+ncol*ndep;
                for(j=ncl+1;j<=nch;j++) t[i][j]=t[i][j-1]+ndep;
        }

        /* return pointer to array of pointers to rows */
        return t;
}

void free_vector(v,nl,nh)
float *v;
long nh,nl;
/* free a float vector allocated with vector() */
{
        free((FREE_ARG) (v+nl-NR_END));
}

void free_ivector(v,nl,nh)
int *v;
long nh,nl;
/* free an int vector allocated with ivector() */
{
        free((FREE_ARG) (v+nl-NR_END));
}

void free_cvector(v,nl,nh)
long nh,nl;
unsigned char *v;
/* free an unsigned char vector allocated with cvector() */
{
        free((FREE_ARG) (v+nl-NR_END));
}

void free_lvector(v,nl,nh)
long nh,nl;
unsigned long *v;
/* free an unsigned long vector allocated with lvector() */
{
        free((FREE_ARG) (v+nl-NR_END));
}

void free_dvector(v,nl,nh)
double *v;
long nh,nl;
/* free a double vector allocated with dvector() */
{
        free((FREE_ARG) (v+nl-NR_END));
}

void free_matrix(m,nrl,nrh,ncl,nch)
float **m;
long nch,ncl,nrh,nrl;
/* free a float matrix allocated by matrix() */
{
        free((FREE_ARG) (m[nrl]+ncl-NR_END));
        free((FREE_ARG) (m+nrl-NR_END));
}

void free_dmatrix(m,nrl,nrh,ncl,nch)
double **m;
long nch,ncl,nrh,nrl;
/* free a double matrix allocated by dmatrix() */
{
        free((FREE_ARG) (m[nrl]+ncl-NR_END));
        free((FREE_ARG) (m+nrl-NR_END));
}

void free_imatrix(m,nrl,nrh,ncl,nch)
int **m;
long nch,ncl,nrh,nrl;
/* free an int matrix allocated by imatrix() */
{
        free((FREE_ARG) (m[nrl]+ncl-NR_END));
        free((FREE_ARG) (m+nrl-NR_END));
}

void free_submatrix(b,nrl,nrh,ncl,nch)
float **b;
long nch,ncl,nrh,nrl;
/* free a submatrix allocated by submatrix() */
{
        free((FREE_ARG) (b+nrl-NR_END));
}

void free_convert_matrix(b,nrl,nrh,ncl,nch)
float **b;
long nch,ncl,nrh,nrl;
/* free a matrix allocated by convert_matrix() */
{
        free((FREE_ARG) (b+nrl-NR_END));
}

void free_f3tensor(t,nrl,nrh,ncl,nch,ndl,ndh)
float ***t;
long nch,ncl,ndh,ndl,nrh,nrl;
/* free a float f3tensor allocated by f3tensor() */
{
        free((FREE_ARG) (t[nrl][ncl]+ndl-NR_END));
        free((FREE_ARG) (t[nrl]+ncl-NR_END));
        free((FREE_ARG) (t+nrl-NR_END));
}

#endif /* ANSI */