crc4(9)

💖 NAME — crc4(9) 💖

Okay so this is crc4(9) from the Kernel API Manual, and it literally calculates the 4-bit crc of a value. Slay. 💅✨

🌸 SYNOPSIS 🌸

uint8_t crc4 (uint8_t c , uint64_t x , int bits );

🎀 ARGUMENTS 🎀

• c — the starting crc4 💖
• x — the value to checksum ✨
• bits — the number of bits in x to checksum 🔢

🦋 DESCRIPTION 🦋

Returns the crc4 value of x, using polynomial 0b10111 — no cap, that's the polynomial 🫶.

The x value is treated as left-aligned, and bits above bits are ignored in the crc calculations. So any extra bits hanging out up there? Not invited to the crc party 😭💅

🔥 SEE ALSO 🔥

• Kernel file ./lib/crc/crc4.c 👑

And that's the whole vibe check, bestie! This page comes from ./lib/crc, dated October 2026 — mwah 💋✨