vect_reserve.c

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/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   vect_reserve.c                                     :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: kfujita <kfujita@student.42tokyo.jp>       +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2023/01/28 00:32:55 by kfujita           #+#    #+#             */
/*   Updated: 2023/01/30 14:33:13 by kfujita          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */
 
#include "ft_vect.h"
#include "../ft_mem/ft_mem.h"
#include "stdlib.h"
 
bool    vect_reserve(t_vect *vect, size_t newcap)
{
    void    *p_new;
 
    if (vect->elemsize == 0 || newcap <= vect->len)
        return (false);
    if (newcap == 0)
        p_new = NULL;
    else
    {
        p_new = ft_calloc_nofill(newcap, vect->elemsize);
        if (p_new == NULL)
            return (false);
        ft_memmove(p_new, vect->p, vect->elemsize * vect->len);
        free(vect->p);
    }
    vect->p = p_new;
    vect->cap = newcap;
    return (true);
}