al_cb_int.c
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	/**********************************************************/
	/* */
	/* FUNCTION: alloc_cubic_int */
	/* */
	/* PURPOSE: Allocates a cube of integer in memory */
	/* */
	/* INPUT: nbr_lin = number of lines */
	/* nbr_col = number of columns */
	/* nbr_slice = number of slices */
	/* */
	/* RETURN: cube = pointer to matrix of pointers */
	/* of matix of pointers */
	/* (NULL if memory allocation failure) */
	/* */
	/* VERSION: 1.0 October 2012 */
	/* */
	/* AUTHOR: Johan RICHARD */
	/* */
	/**********************************************************/
	#include <stdlib.h>
	#include "lt.h"

	/**********************************************************/
	/* Allocate an array of int values of size[nbr_lin][nbr_col][nbr_slices]
	*/
	int ***alloc_cubic_int(int nbr_lin,int nbr_col,int nbr_slice)
	{
	auto int ***cube;
	register int i, j, k;

	cube = (int **) malloc((unsigned) nbr_linsizeof(int **));
	if (cube != 0)
	{
	for (i=0; i<nbr_lin; i++)
	{
	cube[i] = (int *) malloc((unsigned) nbr_colsizeof(int *));
	if (cube !=0)
	{
	for (j=0;j<nbr_col;j++)
	{
	cube[i][j] = (int ) malloc((unsigned) nbr_slicesizeof(int));
	if (cube[i][j] ==0) cube=0;
	}
	}
	}
	}

	for (i=0; i<nbr_lin; i++)
	for (j=0; j<nbr_col; j++)
	for(k=0;k<nbr_slice;k++)
	cube[i][j][k]=0;

	return(cube);
	}