38 lines
1.3 KiB
C
38 lines
1.3 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_atol.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: vvobis <marvin@42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2024/04/10 10:49:04 by vvobis #+# #+# */
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/* Updated: 2024/08/26 21:00:15 by victor ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "libft.h"
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long ft_atol(char const *s, uint8_t *too_big)
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{
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unsigned long long nb;
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char const *tmp;
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nb = 0;
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while (is_space(*s))
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s++;
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tmp = s;
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if (*tmp == '+' || *tmp == '-')
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tmp++;
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while (*tmp >= '0' && *tmp <= '9')
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{
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nb *= 10;
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nb += (*tmp - '0');
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tmp++;
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if (nb > (uint64_t)LLONG_MAX + (*s == '-'))
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return (*too_big == 1);
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}
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if (*s == '-')
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nb = -nb;
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return (nb);
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}
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