rounddown(9)

📦 version 7.3.1, in nixpkgs unstable

Bestie, this is rounddown(9) from the Kernel API Manual — the little kernel math page that rounds down to the next specified multiple. It's giving numbers but make it cute. 💅✨

🌸 NAME 🌸

rounddown — round down to next specified multiple 🎀

💅 SYNOPSIS 💅

rounddown (x , y );

🎀 ARGUMENTS 🎀

  • x — the value to round, bestie. Like, the number you're about to snap down. 💖
  • y — the multiple to round down to. This is the step size you're snapping to. 🦋

💖 DESCRIPTION 💖

Rounds x down to the next multiple of y. That's the whole vibe: value plus multiple, rounded down. Periodt. ✨

If y will always be a power of 2, consider using the faster round_down. No cap, that's the speedier option for that exact situation. 💨

🦋 SEE ALSO 🦋

Go check out the kernel file ./include/linux/math.h and these iconic math-adjacent friends:

Signed, sealed, slayed: source/version is ./include/linux, date is October 2026, and this whole page is rounddown(9). Byeee, bestie 🫶💖🌈

📦 where this page comes from