44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_itoa.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: tosuman <timo42@proton.me> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2023/06/03 11:32:41 by tosuman #+# #+# */
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/* Updated: 2023/06/03 11:32:41 by tosuman ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "libft.h"
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#include <stdlib.h>
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char *ft_itoa(int n)
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{
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char *str;
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size_t n_len;
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unsigned int n_cpy;
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int is_neg;
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is_neg = n < 0;
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n_len = 0;
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n_cpy = ft_abs(n) + !n;
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while (n_cpy * ++n_len != 0)
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n_cpy /= 10;
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--n_len;
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str = malloc(sizeof(*str) * (n_len + is_neg + 1));
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if (!str)
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return (0);
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str += n_len + is_neg;
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n_cpy = ft_abs(n);
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*str-- = 0;
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while (n_len--)
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{
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*str-- = n_cpy % 10 + '0';
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n_cpy /= 10;
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}
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if (is_neg)
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*str-- = '-';
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return (++str);
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}
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