#include <ctype.h>
#include <math.h>
-#ifndef isnan
#ifdef WIN32
#include <float.h>
#endif
#endif
-#ifdef __APPLE__
-#define isnan __isnanf
+// For some reason isnan() isn't working on macosx any more.
+// This is a quick fix.
+#if defined(__APPLE__) && !defined(SYNFIG_ISNAN_FIX)
+#ifdef isnan
+#undef isnan
#endif
-
+inline bool isnan(double x) { return x != x; }
+inline bool isnan(float x) { return x != x; }
+#define SYNFIG_ISNAN_FIX 1
#endif
+
#endif
/* === U S I N G =========================================================== */