ffs.3: Clarify that ffsl() and ffsll() are GNU extensions

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>

diff --git a/man3/ffs.3 b/man3/ffs.3
index f3436b76953a529faf475ce4cb1128404716754f..bc5c2ae2fb9f2ab8e66af8f38e0d99d40320bb7f 100644 (file)
--- a/man3/ffs.3
+++ b/man3/ffs.3
@@ -28,7 +28,7 @@
 .\"
 .\" Modified 2003 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
 .\"
-.TH FFS 3 2009-04-21 "GNU" "Linux Programmer's Manual"
+.TH FFS 3 2009-08-27 "GNU" "Linux Programmer's Manual"
 .SH NAME
 ffs, ffsl, ffsll \- find first bit set in a word
 .SH SYNOPSIS
@@ -63,7 +63,12 @@ These functions return the position of the first bit set,
 or 0 if no bits are set in
 .IR i .
 .SH "CONFORMING TO"
-4.3BSD, POSIX.1-2001.
+.BR ffs (): 4.3BSD, POSIX.1-2001.
+The
+.BR ffsl ()
+and
+.BR ffsll ()
+are glibc extensions.
 .SH NOTES
 BSD systems have a prototype in
 .IR <string.h> .