From 6c6cc810ba35155cbac839e150201a90f868ecb9 Mon Sep 17 00:00:00 2001
From: Michael Kerrisk <mtk.manpages@gmail.com>
Date: Tue, 10 Jul 2007 05:34:35 +0000
Subject: [PATCH] Fix CONFORMING TO section.

---
 man3/lgamma.3 | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/man3/lgamma.3 b/man3/lgamma.3
index 3c48804c8..705bac378 100644
--- a/man3/lgamma.3
+++ b/man3/lgamma.3
@@ -103,6 +103,13 @@ A pole error occurs if
 .I x
 is a negative integer or zero.
 .SH "CONFORMING TO"
-C99, SVr4, 4.3BSD
+The
+.BR lgamma ()
+family of functions are specified in C99 and POSIX.1-2001.
+.I signgam
+is specified in POSIX.1-2001, but not in C99.
+The
+.BR lgamma_r ()
+family of functions are GNU extensions.
 .SH "SEE ALSO"
 .BR tgamma (3)