ref: bc1d0b048c6c8de00d0b6362ce9a1a624f35349d
dir: /libc/src/strspn.c/
/* See LICENSE file for copyright and license details. */
#include <string.h>
#undef strspn
size_t
strspn(const char *s1, const char *s2)
{
size_t n;
int c;
const char *p;
for (n = 0; c = *s1++; ++n) {
for (p = s2; *p && *p != c; ++p)
/* nothing */;
if (*p == '\0')
break;
}
return n;
}