104 lines
2.1 KiB
C
104 lines
2.1 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* utils.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: hulamy <marvin@42.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2022/01/26 15:30:19 by hulamy #+# #+# */
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/* Updated: 2022/01/26 18:04:08 by hulamy ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "philo.h"
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int ft_isdigit_2d_arr(char **str)
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{
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int i;
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int j;
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i = 0;
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while (str[i])
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{
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j = 0;
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while (str[i][j])
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{
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if (str[i][j] < '0' || str[i][j] > '9')
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return (0);
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j++;
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}
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i++;
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}
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return (1);
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}
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size_t ft_strlen(char *str)
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{
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size_t i;
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i = 0;
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while (str[i])
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i++;
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return (i);
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}
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int ft_strncmp(char *s1, char *s2, size_t n)
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{
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size_t i;
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int res;
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i = 0;
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res = 0;
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while (s1[i] && s1[i] == s2[i] && i < n - 1)
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i++;
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if (n != 0)
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res = (unsigned char)s1[i] - (unsigned char)s2[i];
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return (res);
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}
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int ft_int_overflow(char *str)
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{
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size_t len;
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char *int_xtrem;
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int_xtrem = "2147483647";
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if (str[0] == '-')
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int_xtrem = "2147483648";
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if (str[0] == '+' || str[0] == '-')
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str++;
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len = ft_strlen(str);
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if (len < 10)
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return (0);
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else if (len > 10 || ft_strncmp(str, int_xtrem, len) > 0)
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return (1);
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return (0);
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}
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int ft_atoi(const char *str)
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{
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int i;
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int result;
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int is_negative;
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is_negative = 0;
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result = 0;
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i = 0;
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while (str[i] == ' ' || (str[i] >= 9 && str[i] <= 13))
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i++;
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if (str[i] == '+')
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i++;
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else if (str[i] == '-')
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{
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is_negative = 1;
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i++;
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}
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while (str[i] >= '0' && str[i] <= '9')
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{
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result = (result * 10) + (str[i] - '0');
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i++;
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}
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if (is_negative)
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result = result * -1;
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return (result);
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}
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