rint.3: Fix feature test macro requirements for nearbyint*()

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

diff --git a/man3/rint.3 b/man3/rint.3
index d03da5ac8f13a08ec98933cae2b16f12ed75a004..95e464fbab8e7f85406e68ba932af541c5c4c8c1 100644 (file)
--- a/man3/rint.3
+++ b/man3/rint.3
@@ -55,7 +55,7 @@ Feature Test Macro Requirements for glibc (see
 .BR nearbyintf (),
 .BR nearbyintl ():
 .RS 4
-_XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE;
+_XOPEN_SOURCE\ >=\ 600 || _POSIX_C_SOURCE >= 200112L || _ISOC99_SOURCE;
 .br
 or
 .I cc\ -std=c99