From: curt <curt>
Date: Sun, 21 Nov 2004 03:13:54 +0000 (+0000)
Subject: I don't understand why FreeBSD doesn't see isnan() after including math.h
X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=7c60ccfc359166ea821a326306e0e59637116169;p=simgear.git

I don't understand why FreeBSD doesn't see isnan() after including math.h
but it doesn't.  Trying the apple approach to fixing isnan results in an
infinite loop (making me wonder what happens on OSX?)  This is an alternative
approach to checking isnan() on freebsd ...
---

diff --git a/simgear/scene/sky/cloud.cxx b/simgear/scene/sky/cloud.cxx
index a2b3b662..e62384b9 100644
--- a/simgear/scene/sky/cloud.cxx
+++ b/simgear/scene/sky/cloud.cxx
@@ -21,7 +21,7 @@
 // #include <stdio.h>
 #include <math.h>
 
-#if defined (__APPLE__) || defined (__FreeBSD__)
+#if defined (__APPLE__)
 // any C++ header file undefines isinf and isnan
 // so this should be included before <iostream>
 inline int (isinf)(double r) { return isinf(r); }
@@ -45,6 +45,11 @@ inline int (isnan)(double r) { return isnan(r); }
 #define isnan(x) _isnan(x)
 #endif
 
+#if defined (__FreeBSD__)
+inline int isnan(double r) { return !(r < 0 || r > 0); }
+#endif
+
+
 
 static ssgStateSelector *layer_states[SGCloudLayer::SG_MAX_CLOUD_COVERAGES];
 static bool state_initialized = false;
diff --git a/simgear/sound/soundmgr_openal.cxx b/simgear/sound/soundmgr_openal.cxx
index 1966259a..0785edb5 100644
--- a/simgear/sound/soundmgr_openal.cxx
+++ b/simgear/sound/soundmgr_openal.cxx
@@ -35,7 +35,7 @@
 # include <AL/alc.h>
 #endif
 
-#if defined (__APPLE__) 
+#if defined (__APPLE__)
 // any C++ header file undefines isinf and isnan
 // so this should be included before <iostream>
 inline int (isinf)(double r) { return isinf(r); }
@@ -46,6 +46,10 @@ inline int (isnan)(double r) { return isnan(r); }
 #define isnan(x) _isnan(x)
 #endif
 
+#if defined (__FreeBSD__)
+inline int isnan(double r) { return !(r < 0 || r > 0); }
+#endif
+
 #include STL_IOSTREAM
 
 #include <simgear/debug/logstream.hxx>