ft_calloc.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_calloc.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: agras <agras@student.42.fr>                +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2021/12/05 20:23:59 by agras             #+#    #+#             */
/*   Updated: 2021/12/13 17:09:15 by agras            ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include <stddef.h>
#include <stdlib.h>

void	*ft_calloc(size_t nmemb, size_t size)
{
	void	*ptr;
	int		mem_size;
	int		i;

	if (nmemb * size > 2147483647)
		return (NULL);
	mem_size = nmemb * size;
	ptr = malloc(mem_size);
	if (!ptr)
		return (NULL);
	i = 0;
	while (i < mem_size)
	{
		((unsigned char *)ptr)[i] = '\0';
		i++;
	}
	return (ptr);
}