80 lines
1.9 KiB
C
80 lines
1.9 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_int_utils.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: thrieg <thrieg@student.42mulhouse.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2024/10/30 10:11:17 by alier #+# #+# */
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/* Updated: 2025/02/16 19:03:36 by thrieg ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include <stdlib.h>
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#include <errno.h>
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#include "libft.h"
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size_t i_drep_len(int n)
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{
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size_t len;
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len = 0;
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if (n < 0)
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len++;
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while (1)
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{
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len++;
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n /= 10;
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if (n == 0)
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break ;
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}
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return (len);
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}
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/*
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* Reimplementation of libc atoi() but sets `errno` to `ERANGE` if an
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* domain error is encountered (overflow, underflow) or `EINVAL` if
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* no digits characters or invalid characters at end).
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*/
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int ft_atoie(const char *nptr)
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{
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int n;
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int mult;
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n = 0;
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mult = -1;
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while (ft_isspace(*nptr))
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nptr++;
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if (*nptr == '+' || *nptr == '-')
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{
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if (*nptr == '-')
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mult = 1;
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nptr++;
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}
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if (!ft_isdigit(*nptr))
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errno = EINVAL;
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while (ft_isdigit(*nptr))
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{
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n = safe_int_sub(safe_int_mul(n, 10), *nptr - '0');
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nptr++;
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}
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if (*nptr != '\0')
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errno = EINVAL;
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return (safe_int_mul(n, mult));
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}
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unsigned int ft_max_uint(size_t len, unsigned int a[len])
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{
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size_t i;
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unsigned int max;
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i = 0;
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max = 0;
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while (i < len)
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{
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if (a[i] > max)
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max = a[i];
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i++;
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}
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return (max);
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}
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