hsiphash_4u32(9)

📦 version 7.3.1, in nixpkgs unstable

💅 hsiphash_4u32(9) — the Kernel API Manual, bestie edition

okay so this is a page from the kernel API manual, and today's main character is hsiphash_4u32. she computes the 32-bit hsiphash PRF value of 4 u32s. that's it, that's the whole vibe. ✨

🌸 NAME 🌸

hsiphash_4u32 — compute 32-bit hsiphash PRF value of 4 u32

like literally. four of them. u32s. hashed. with a key. slay.

🎀 SYNOPSIS 🎀

u32 hsiphash_4u32 (const u32 first , const u32 second , const u32 third
, const u32 forth , const hsiphash_key_t *key );

🦋 ARGUMENTS 🦋

okay so she takes these five things, no more no less:

  • first — the first u32 🥇
  • second — the second u32 🥈
  • third — the third u32 🥉
  • forth — the forth u32 💫 (yes it's spelled "forth" on this page, we do not correct her, she's iconic)
  • key — the hsiphash key 🔑 (the const hsiphash_key_t * one, in case you were wondering — she's a pointer to the key)

🔥 SEE ALSO 🔥

go look at the kernel file ./lib/siphash.c if you're nosy (respectfully), and also these besties:

yes the last three show up twice, and no i'm not gonna pretend they don't — she listed them twice, periodt. 💀

💖 sign-off 💖

and that's the whole page, bestie 🫶. it lives in ./lib, it's stamped October 2026, and it answers to the name hsiphash_4u32(9). no cap. go hash something. 💅🌈

📦 where this page comes from