Fixed build

glm/ext/scalar_ulp.inl

@@ -8,6 +8,7 @@
 #include "../detail/type_float.hpp"
 #include "../ext/scalar_constants.hpp"
 #include <cmath>
+#include <cfloat>
 
 #if(GLM_COMPILER & GLM_COMPILER_VC)
 #	pragma warning(push)