siphash_1u64(9)

okay bestie, welcome to the siphash_1u64(9) page from the Kernel API Manual 💖 this one is short and sweet, no cap.

🌸 NAME 🌸

siphash_1u64 — literally computes the 64-bit siphash PRF value of a u64. That’s the whole vibe ✨

🦋 SYNOPSIS 🦋

u64 siphash_1u64 (const u64 first , const siphash_key_t *key );

🎀 ARGUMENTS 🎀

• first — the first u64. yes bestie, it’s a u64, and it’s first 💅
• key — the siphash key. iconic little key, periodt 🔑

👑 SEE ALSO 👑

Kernel file ./lib/siphash.c is right there in the mix, and these functions are all in the group chat too 🫶

• siphash_2u64(9)
• siphash_3u64(9)
• siphash_4u64(9)
• hsiphash_1u32(9)
• hsiphash_2u32(9)
• hsiphash_3u32(9)
• hsiphash_4u32(9)
• hsiphash_1u32(9)
• hsiphash_2u32(9)
• hsiphash_3u32(9)
• hsiphash_4u32(9)

mwah 💋 — footer tea: source ./lib, date October 2026 🫶