--- LuxCore-luxcorerender_v2.5/include/luxrays/utils/utils.h.old	2021-04-10 03:51:48.000000000 -0700
+++ LuxCore-luxcorerender_v2.5/include/luxrays/utils/utils.h	2021-04-19 00:08:31.464758097 -0700
@@ -35,9 +35,6 @@
 #include <float.h>
 #define isnan(a) _isnan(a)
 #define isinf(f) (!_finite((f)))
-#else
-#define isnan(a) std::isnan(a)
-#define isinf(f) std::isinf(f)
 #endif
 
 #if defined(WIN32)