__ffs(9)

__ffs9

Find first set bit in word

Usage

unsigned long __ffs(unsigned long word);

Arguments

word

The word to search

Overview

Undefined if no bit exists, so code should check against 0 first.

Releases

6 releases since Debian 4.0 (Etch); the text changed 5 times.

  1. 4.0
  2. 5.0
  3. 6.0
  4. 7
  5. 8
  6. 9

From linux-manual-4.9 4.9.228-1 in Debian 9 (Stretch). Parsed by carta from the page's man source.