ft_calloc.c

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_calloc.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: kfujita <kfujita@student.42tokyo.jp>       +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2022/04/18 03:15:08 by kfujita           #+#    #+#             */
/*   Updated: 2023/02/06 23:14:48 by kfujita          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "ft_mem.h"
#include "../ft_math/ft_math.h"
#include <stdlib.h>
 
void    *ft_calloc_nofill(size_t count, size_t size)
{
    size_t  bytes_to_allocate;
 
    if (!can_mulp(count, size))
        return (NULL);
    bytes_to_allocate = count * size;
    if (bytes_to_allocate <= 0)
        bytes_to_allocate = 1;
    return (malloc(bytes_to_allocate));
}
 
void    *ft_calloc(size_t count, size_t size)
{
    void    *p_ret;
 
    p_ret = ft_calloc_nofill(count, size);
    if (p_ret != NULL)
        ft_bzero(p_ret, count * size);
    return (p_ret);
}