H3XploR
51 lines
1.4 KiB
C
51 lines
1.4 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_atof.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: yantoine <yantoine@student.42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2025/02/17 21:19:17 by yantoine #+# #+# */
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/* Updated: 2025/02/18 17:14:00 by yantoine ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "miniRT.h"
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inline static char *check_sign(char *str, int *sign)
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{
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if (*str == '-')
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{
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*sign = -1;
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str++;
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}
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return (str);
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}
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float ft_atof(char *str)
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{
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float res;
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float dec;
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int sign;
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res = 0;
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dec = 0;
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sign = 1;
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str = check_sign(str, &sign);
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while (*str >= '0' && *str <= '9')
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{
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res = res * 10 + *str - '0';
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str++;
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}
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if (*str == '.')
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{
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str++;
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while (*str >= '0' && *str <= '9')
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{
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dec = dec * 10 + *str - '0';
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str++;
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}
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}
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return (sign * (res + dec / pow(10, ft_strlen(str))));
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}
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