diff options
author | pommicket <pommicket@gmail.com> | 2022-02-20 13:18:21 -0800 |
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committer | pommicket <pommicket@gmail.com> | 2022-02-20 13:18:21 -0800 |
commit | 9bc8a11afeed3569736b89754012e3ca22ee10f6 (patch) | |
tree | 5f0ec0d5c05f879b1ee86adfa654ed3ef2178d5f /05/musl-0.6.0/src/string/memset.c | |
parent | 0f97a589b800bdb71dda05984192f0f66a52edaa (diff) |
conclusion
Diffstat (limited to '05/musl-0.6.0/src/string/memset.c')
-rw-r--r-- | 05/musl-0.6.0/src/string/memset.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/05/musl-0.6.0/src/string/memset.c b/05/musl-0.6.0/src/string/memset.c new file mode 100644 index 0000000..20e47c4 --- /dev/null +++ b/05/musl-0.6.0/src/string/memset.c @@ -0,0 +1,21 @@ +#include <string.h> +#include <stdlib.h> +#include <stdint.h> +#include <limits.h> + +#define SS (sizeof(size_t)) +#define ALIGN (sizeof(size_t)-1) +#define ONES ((size_t)-1/UCHAR_MAX) + +void *memset(void *dest, int c, size_t n) +{ + unsigned char *s = dest; + c = (unsigned char)c; + for (; ((uintptr_t)s & ALIGN) && n; n--) *s++ = c; + if (n) { + size_t *w, k = ONES * c; + for (w = (void *)s; n>=SS; n-=SS, w++) *w = k; + for (s = (void *)w; n; n--, s++) *s = c; + } + return dest; +} |