$OpenBSD$
--- simgear/scene/sky/cloud.cxx.orig Thu Dec 13 20:44:14 2007
+++ simgear/scene/sky/cloud.cxx Mon Sep 21 13:37:49 2009
@@ -27,7 +27,7 @@
#include <simgear/compiler.h>
// #include <stdio.h>
-#include <math.h>
+#include <cmath>
#include <plib/sg.h>
#include <plib/ssg.h>
@@ -721,7 +721,7 @@ bool SGCloudLayer::reposition( sgVec3 p, sgVec3 up, do
// this happens, lets just use the last known good course.
// This is a hack, and it would probably be better to make
// calc_gc_course_dist() more robust.
- if ( isnan(course) ) {
+ if ( std::isnan(course) ) {
course = last_course;
} else {
last_course = course;