#include <grass/gis.h>
#include "local_proto.h"

double *vector (int nl, int nh)
{
    double *v;

    v=(double *)G_malloc((unsigned) (nh-nl+1)*sizeof(double));
    return v-nl;
}

double **matrix (int nrl, int nrh, int ncl, int nch)
{
    int i;
    double **m;

    m=(double **) G_malloc((unsigned) (nrh-nrl+1)*sizeof(double*));
    m -= nrl;

    for(i=nrl;i<=nrh;i++) {
	    m[i]=(double *) G_malloc((unsigned) (nch-ncl+1)*sizeof(double));
	    m[i] -= ncl;
    }
    return m;
}

int free_vector (double *v, int nl, int nh)
{
    G_free((char*) (v+nl));

    return 0;
}

int free_matrix (double **m, int nrl, int nrh, int ncl, int nch)
{
    int i;

    for(i=nrh;i>=nrl;i--) G_free((char*) (m[i]+ncl));
    G_free((char*) (m+nrl));

    return 0;
}