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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_bsearch.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: cacharle <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2020/02/10 05:29:05 by cacharle #+# #+# */
/* Updated: 2020/02/13 23:14:48 by cacharle ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft_algo.h"
void *ft_bsearch(const void *base, size_t nel, size_t width,
t_ftsearch_const *consts)
{
int res;
size_t mid;
if (nel < 1)
return (NULL);
mid = nel / 2;
res = (consts->compar)(consts->key, base + mid * width);
if (res == 0)
return ((void*)base + mid * width);
if (res < 0)
return (ft_bsearch(base, mid, width, consts));
else
return (ft_bsearch(base + (mid + 1) * width, nel - mid - 1,
width, consts));
}
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