--- cloud.cxx	2006-10-19 12:17:34.992275800 +0100
+++ ../cloud.cxx	2006-08-11 10:46:09.703125000 +0100
@@ -56,6 +56,7 @@
 #  endif
 #endif
 
+#include <ieeefp.h>
 
 static ssgSharedPtr<ssgStateSelector> layer_states[SGCloudLayer::SG_MAX_CLOUD_COVERAGES];
 static bool state_initialized = false;