lib/libc: Add memchr. We already have strchr, but memchr is useful too.

crypto-aes
Daniel Campora 8 years ago
parent 9fbc265eb8
commit abea1c38a9
  1. 12
      lib/libc/string0.c

@ -114,6 +114,18 @@ int memcmp(const void *s1, const void *s2, size_t n) {
return 0;
}
void *memchr(const void *s, int c, size_t n) {
if (n != 0) {
const unsigned char *p = s;
do {
if (*p++ == c)
return ((void *)(p - 1));
} while (--n != 0);
}
return 0;
}
size_t strlen(const char *str) {
int len = 0;
for (const char *s = str; *s; s++) {

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