From f1cb4e9962d715ec85ba26d7019ab83adea1ffb7 Mon Sep 17 00:00:00 2001
From: Gordon Bergling <gbe@FreeBSD.org>
Date: Sat, 25 Oct 2025 23:37:22 +0200
Subject: [PATCH] ffs.3: Add a STANDARDS section to the manual page

The ffs() function conforms to IEEE Std 1003.1-2008 ("POSIX.1").
The ffsl() and ffsll() functions conform to IEEE Std 1003.1-2024 ("POSIX.1").

Reviewed by:	ziaee
MFC after:	5 days
Differential Revision:	https://reviews.freebsd.org/D53352
---
 lib/libc/string/ffs.3 | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/lib/libc/string/ffs.3 b/lib/libc/string/ffs.3
index 2a5adb01c73..1cca54c0b30 100644
--- a/lib/libc/string/ffs.3
+++ b/lib/libc/string/ffs.3
@@ -27,7 +27,7 @@
 .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 .\" SUCH DAMAGE.
 .\"
-.Dd October 17, 2015
+.Dd October 25, 2025
 .Dt FFS 3
 .Os
 .Sh NAME
@@ -80,6 +80,17 @@ argument was zero.
 .Sh SEE ALSO
 .Xr bitstring 3 ,
 .Xr bitset 9
+.Sh STANDARDS
+The
+.Fn ffs
+function conforms to
+.St -p1003.1-2008 .
+The
+.Fn ffsl
+and
+.Fn ffsll
+functions conform to
+.St -p1003.1-2024 .
 .Sh HISTORY
 The
 .Fn ffs