strcspn(9)

💖 NAME 💖

okay bestie, welcome to the Kernel API Manual page for strcspn(9) — and no cap, this one is a tiny little icon. 💅

official NAME vibe: Calculate the length of the initial substring of @s which does not contain letters in @reject.

Like, it's giving “how much of the start of this string is safe from the reject squad?” energy. 🎀

✨ SYNOPSIS ✨

size_t strcspn (const char *s , const char *reject );

🦋 ARGUMENTS 🦋

• s — the string to be searched. The main character being scanned, fr fr.
• reject — the string to avoid. The no-fly list, bestie. 💀

🌈 SEE ALSO 🌈

Kernel file: ./lib/string.c — and the whole see-also squad is strncasecmp(9), stpcpy(9), strcmp(9), strncmp(9), strchr(9), strchrnul(9), strnchrnul(9), strrchr(9), strnchr(9), strspn(9), strpbrk(9), strsep(9), memset(9), memset16(9), memset32(9), memset64(9), memcpy(9), memmove(9), memcmp(9), bcmp(9), memscan(9), strstr(9), strnstr(9), memchr(9), memchr_inv(9). 🫶

mwah 💋 this cutie is from ./lib, dated October 2026, and the page is strcspn(9) — slay and goodbye. 🦋