strspn(9)

💅 NAME 💅

okay so bestie, welcome to the strspn(9) page from the Kernel API Manual — yes that's the vibe, this is a kernel function, not your usual man page energy ✨

strspn — calculates the length of the initial substring of @s that only contains letters in @accept 🎀

Like, it's literally measuring how far the matching streak goes from the very start of s before something outside the accept club shows up. iykyk 💖

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🦋 SYNOPSIS 🦋

size_t strspn (const char *s , const char *accept );

no cap, that's the whole signature, keep it exactly like that 🙈

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🌸 ARGUMENTS 🌸

• s — the string that's getting searched, your main character string honestly 👑
• accept — the string you're searching for, aka the little set of letters that's allowed in the initial run 🔥

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⭐ SEE ALSO ⭐

kernel file ./lib/string.c — that's where the source lives, bestie, go say hi 🫶

• strncasecmp(9)
• stpcpy(9)
• strcmp(9)
• strncmp(9)
• strchr(9)
• strchrnul(9)
• strnchrnul(9)
• strrchr(9)
• strnchr(9)
• strcspn(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)

that's the whole friend group, absolutely iconic lineup 🌈💜

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ngl, if you're looking for the actual behaviour details, this page is giving "short and sweet" — the facts above are all it's serving, so don't go inventing extra lore, bestie 💀

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and that's a wrap, mwah 💅✨ this little cutie is brought to you by ./lib, dated October 2026 — slay, go forth and count your substrings 🎀🦋💖