tree 95ced0dfbbd8ac39d8e73b55a414398dccb106ad
parent 786a4ea82ec9c87e3a895cf41081029b285a5fe5
author Stefan Hajnoczi <stefanha@redhat.com> 1427124567 +0000
committer Kevin Wolf <kwolf@redhat.com> 1430228168 +0200

Convert ffs() != 0 callers to ctz32()

There are a number of ffs(3) callers that do roughly:

  bit = ffs(val);
  if (bit) {
      do_something(bit - 1);
  }

This pattern can be converted to ctz32() like this:

  zeroes = ctz32(val);
  if (zeroes != 32) {
      do_something(zeroes);
  }

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 1427124571-28598-6-git-send-email-stefanha@redhat.com
Signed-off-by: Kevin Wolf <kwolf@redhat.com>