Cygwin fixes.

[simgear.git] / simgear / compiler.h

diff --git a/simgear/compiler.h b/simgear/compiler.h
index 3af548df6ecf67c9a7ee8e25113ecf9bb08f2ee7..b168252de07b08d48c4de223642ecec1fc5aa545 100644 (file)
--- a/simgear/compiler.h
+++ b/simgear/compiler.h
@@ -376,6 +376,8 @@
 #  define SG_GLU_H <OpenGL/glu.h>
 #  define SG_GLEXT_H <OpenGL/glext.h>
 #  define SG_GLUT_H <GLUT/glut.h>
+
+inline int (isnan)(double r) { return !(r <= 0 || r >= 0); }
 #else
 #  define SG_GL_H <GL/gl.h>
 #  define SG_GLX_H <GL/glx.h>
@@ -466,3 +468,4 @@ inline const_mem_fun_ref_t<_Ret,_Tp> mem_fun_ref(_Ret (_Tp::*__f)() const)
 #endif // SG_INCOMPLETE_FUNCTIONAL
 
 #endif // _SG_COMPILER_H
+