Click this button to go to the index for this section.

ffs(3)
NAME
  ffs - Finds first set bit

LIBRARY
  Standard C Library (libc.so, libc.a)

SYNOPSIS
  #include <strings.h>

  int ffs(
	  int pattern);

STANDARDS
  Interfaces documented on this reference page conform to industry standards
  as follows:

  ffs():  XPG4-UNIX

  Refer to the standards(5) reference page for more information about
  industry standards and associated tags.

PARAMETERS
  pattern   Specifies the bit pattern searched.

DESCRIPTION
  The ffs() function finds the first bit set (beginning with the least
  significant bit) and returns the index of that bit.  Bits are numbered
  starting at 1 (the least significant bit).  If pattern is 0 (zero), ffs()
  returns 0.

RELATED INFORMATION
  Standards: standards(5)