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Main: libc/include/string.h: Add func "memchr"

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This commit is contained in:
Alex Kotov 2022-06-10 08:43:04 +03:00
parent dc7b1002a4
commit 88683caf0c
Signed by: kotovalexarian
GPG key ID: 553C0EBBEB5D5F08
2 changed files with 9 additions and 0 deletions
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1
libc/include/string.h
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@ -10,6 +10,7 @@ extern "C" {
int memcmp(const void *s1, const void *s2, size_t n);
void *memcpy(void *dest, const void *src, size_t n);
void *memmove(void *dest, const void *src, size_t n);
void *memchr(const void *s, int c, size_t n);
void *memset(void *s, int c, size_t n);
int strcmp(const char *s1, const char *s2);
char *strcpy(char *dest, const char *src);

8
libc/src/string.c
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@ -35,6 +35,14 @@ void *memmove(void *dest, const void *src, size_t n)
return dest;
}
void *memchr(const void *s, int c, size_t n)
{
for (const unsigned char *p = s; n--; ++p) {
if ((unsigned char)c == *p) return (void*)p;
}
return NULL;
}
void *memset(void *s, int c, size_t n)
{
char *ss = s;