ref: f07e299022e9ddc6c2ffd99135b2d9e382cf92d3
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; }