ref: c53fa30afa573aa16715f46a379cf8e8d5d5e8a6
dir: /libc/src/strcspn.c/
/* See LICENSE file for copyright and license details. */ #include <string.h> #undef strcspn size_t strcspn(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 == c) break; } return n; }