42 lines
1.4 KiB
C
Executable file
42 lines
1.4 KiB
C
Executable file
/* ************************************************************************** */
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/* */
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/* ::: :::::::: */
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/* ft_memset.c :+: :+: :+: */
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/* +:+ +:+ +:+ */
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/* By: thrieg <thrieg@student.42mulhouse.fr> +#+ +:+ +#+ */
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/* +#+#+#+#+#+ +#+ */
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/* Created: 2024/10/14 15:40:57 by thrieg #+# #+# */
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/* Updated: 2025/02/16 19:04:13 by thrieg ### ########.fr */
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/* */
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/* ************************************************************************** */
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#include "libft.h"
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void *ft_memset(void *s, int c, size_t n)
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{
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char *str;
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unsigned long long *str_packed;
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unsigned long long cccccccc;
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size_t i;
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str = (char *)s;
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while (n % sizeof(unsigned long long))
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{
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*str++ = (unsigned char)c;
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n--;
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}
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str_packed = (unsigned long long *)str;
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cccccccc = 0;
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i = 0;
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while (i < sizeof(unsigned long long))
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{
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cccccccc |= ((unsigned long long)(unsigned char)c) << (i * 8);
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i++;
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}
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while (n >= sizeof(unsigned long long))
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{
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*str_packed++ = cccccccc;
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n -= sizeof(unsigned long long);
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}
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return (s);
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}
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