al_sq_int.c
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	/**********************************************************/
	/* */
	/* FUNCTION: alloc_square_int */
	/* */
	/* PURPOSE: Allocates a square of int in memory */
	/* */
	/* INPUT: nbr_lin = number of lines */
	/* nbr_col = number of columns */
	/* */
	/* RETURN: square = pointer to matrix of pointers */
	/* (NULL if memory allocation failure) */
	/* */
	/* VERSION: 1.1 March 1992 */
	/* */
	/* AUTHOR: Karim BOUYOUCEF */
	/* */
	/**********************************************************/
	#include <stdlib.h>
	#include "lt.h"

	/**********************************************************/
	int **alloc_square_int(int nbr_lin,int nbr_col)
	{
	auto int **square;
	register int i, j;

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

	for (i=0; i<nbr_lin; i++)
	for (j=0; j<nbr_col; j++)
	square[i][j]=0;

	return(square);
	}