ft_calloc.c

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_calloc.c                                        :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: rmikhayl <rmikhayl@student.42london.c      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/12/17 17:25:26 by rmikhayl          #+#    #+#             */
/*   Updated: 2023/12/17 17:25:26 by rmikhayl         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "libft.h"
 
/* *************************** ft_calloc ************************************ */
/*   Allocates zero-initialized memory for 'count' elements of 'size'.        */
/*   Returns a pointer to memory or NULL on failure/overflow.                 */
/*                                                                            */
/*   In layman's terms: It's like reserving a series of boxes (memory) and    */
/*   ensuring they're all empty before you begin to use them.                 */
/* ************************************************************************** */
 
void    *ft_calloc(size_t count, size_t size)
{
    void    *ptr;
 
    if (size != 0 && count > SIZE_MAX / size)
        return (NULL);
    ptr = malloc(count * size);
    if (!ptr)
        return (NULL);
    ft_memset(ptr, 0, count * size);
    return (ptr);
}