Add reference to POSIX.

[pspp] / doc / headers / tgmath.texi

diff --git a/doc/headers/tgmath.texi b/doc/headers/tgmath.texi
index 0aef785e34e3f80479375ff8c08c7a8a95e0ee21..f3ce7096be8b0fbb9cd58a6e0062eb94a54357db 100644 (file)
--- a/doc/headers/tgmath.texi
+++ b/doc/headers/tgmath.texi
@@ -1,6 +1,8 @@
 @node tgmath.h
 @section @file{tgmath.h}
 
+POSIX specification: @url{http://www.opengroup.org/susv3xbd/tgmath.h.html}
+
 Gnulib module: ---
 
 Portability problems fixed by Gnulib: