$NetBSD: patch-ac,v 1.2 2015/03/18 17:46:32 dholland Exp $

Fix detection of isnan.

--- libsee/math.c.orig	2009-06-03 06:31:41 +0300
+++ libsee/math.c	2009-06-03 06:33:02 +0300
@@ -47,7 +47,7 @@ _SEE_isnan(n)
 {
 #if SEE_NUMBER_IS_FLOAT && HAVE_ISNANF
 	return isnanf(n);
-#elif HAVE_ISNAN
+#elif HAVE_ISNAN || HAVE_DECL_ISNAN
 	return isnan(n);
 #elif HAVE__ISNAN
 	return _isnan(n);