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oops

$OpenBSD$
$NetBSD: patch-ad,v 1.1.1.1 2007/07/12 19:56:14 drochner Exp $

--- simgear/sound/soundmgr_openal.cxx.orig	Sat Nov 17 10:35:45 2007
+++ simgear/sound/soundmgr_openal.cxx	Mon Sep 21 17:07:48 2009
@@ -37,6 +37,8 @@
 # include <AL/alc.h>
 #endif
 
+#include <cmath>
+
 #if defined (__APPLE__)
 #  ifdef __GNUC__
 #    if ( __GNUC__ >= 3 ) && ( __GNUC_MINOR__ >= 3 )
@@ -320,7 +322,7 @@ bool SGSoundMgr::stop( const string& refname ) {
 
 // set source position of all managed sounds
 void SGSoundMgr::set_source_pos_all( ALfloat *pos ) {
-    if ( isnan(pos[0]) || isnan(pos[1]) || isnan(pos[2]) ) {
+    if ( std::isnan(pos[0]) || std::isnan(pos[1]) || std::isnan(pos[2]) ) {
         // bail if a bad position is passed in
         return;
     }
@@ -336,7 +338,7 @@ void SGSoundMgr::set_source_pos_all( ALfloat *pos ) {
 
 // set source velocity of all managed sounds
 void SGSoundMgr::set_source_vel_all( ALfloat *vel ) {
-    if ( isnan(vel[0]) || isnan(vel[1]) || isnan(vel[2]) ) {
+    if ( std::isnan(vel[0]) || std::isnan(vel[1]) || std::isnan(vel[2]) ) {
         // bail if a bad velocity is passed in
         return;
     }