From 90076f97a1de6b60968e98d6c7a8b520ebda3c8e Mon Sep 17 00:00:00 2001 From: Cabergs Charles Date: Tue, 9 Jul 2019 10:23:25 +0200 Subject: c07/c08 start, c05 faster, better, stronger --- c05/ex05/ft_sqrt.c | 30 +++++++++++++++++++----------- 1 file changed, 19 insertions(+), 11 deletions(-) (limited to 'c05/ex05') diff --git a/c05/ex05/ft_sqrt.c b/c05/ex05/ft_sqrt.c index a72af2d..aef9630 100644 --- a/c05/ex05/ft_sqrt.c +++ b/c05/ex05/ft_sqrt.c @@ -6,20 +6,28 @@ /* By: cacharle +#+ +:+ +#+ */ /* +#+#+#+#+#+ +#+ */ /* Created: 2019/07/06 20:06:48 by cacharle #+# #+# */ -/* Updated: 2019/07/08 12:08:36 by cacharle ### ########.fr */ +/* Updated: 2019/07/09 06:38:18 by cacharle ### ########.fr */ /* */ /* ************************************************************************** */ -int ft_sqrt(int nb) +int bin_search_sqrt(long unsigned int nb, unsigned int low, unsigned int up) { - int i; + long unsigned int mid; + + mid = low + ((up - low) / 2); + if (mid * mid == nb) + return (mid); + if (low > up) + return (0); + if (mid * mid < nb) + return (bin_search_sqrt(nb, mid + 1, up)); + else + return (bin_search_sqrt(nb, low, mid - 1)); +} - i = 0; - while (i <= nb) - { - if (i * i == nb) - return (i); - i++; - } - return (0); +int ft_sqrt(int nb) +{ + if (nb < 0) + return (0); + return (bin_search_sqrt(nb, 0, nb)); } -- cgit