memset32(9)

💅 memset32(9) — from the Kernel API Manual, bestie 💖

Okay so like, before we even start: this is a kernel API page, memset32(9), and it's genuinely one of the cutest little functions in ./lib. Let's get into it ✨

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🌸 NAME 🌸

memset32 — fills a memory area with a uint32_t. That's it. That's the whole vibe. 🫶

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⭐ SYNOPSIS ⭐

void * memset32 (uint32_t *s , uint32_t v , size_t count );

Literally just three args and a pointer back. Iconic behavior, no cap. 👑

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🎀 ARGUMENTS 🎀

• s — pointer to the start of the area. Like, the very beginning of where the magic happens 💫
• v — the value you're filling the area with. This is a uint32_t, bestie, not a byte, ok?? 🍓
• count — the number of values to store. Count of values, not bytes. We'll get to that, don't worry 🙈

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🦋 DESCRIPTION 🦋

So the way this differs from memset is... it fills with a uint32_t instead of a byte. That's the whole glow-up. memset does bytes, memset32 does 32-bit words, and honestly? She ate. 💅

But listen — and this is the part where people get got — count is the number of uint32_ts to store, not the number of bytes. Not bytes. Do not pass bytes. I'm begging you. 😭 If you're coming from memset brain and you hand her a byte count, she will happily fill way more memory than you meant and it will not be cute. Lowkey a whole tragedy. 💀

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🌈 SEE ALSO 🌈

All of these live in the kernel file ./lib/string.c, and honestly the whole friend group is here:

• strncasecmp(9)
• stpcpy(9)
• strcmp(9)
• strncmp(9)
• strchr(9)
• strchrnul(9)
• strnchrnul(9)
• strrchr(9)
• strnchr(9)
• strspn(9)
• strcspn(9)
• strpbrk(9)
• strsep(9)
• memset(9)
• memset16(9)
• memset64(9)
• memcpy(9)
• memmove(9)
• memcmp(9)
• bcmp(9)
• memscan(9)
• strstr(9)
• strnstr(9)
• memchr(9)
• memchr_inv(9)

The whole memset family — 16, 32, 64 — all matching, all slaying. Pick your width, bestie. 🌟

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vibe check reminder: count = number of uint32_ts. Not bytes. Say it with me. 🫶

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and that's the teaaa 🧚 — this little gem is from ./lib, dated October 2026, and it's page memset32(9) of the Kernel API Manual. mwah 💖✨🎀