fix clang -Wnan-infinity-disabled

src/color_helpers.h

@@ -7,6 +7,7 @@
 #include <fstream>
 #include <string>
 #include <vector>
+#include <limits>
 
 #include <glm/vec2.hpp>
 #include <glm/vec3.hpp>
@@ -356,14 +357,6 @@ struct lut3d_t
 
 bool LoadCubeLut( lut3d_t * lut3d, const char * filename );
 
-using transformerFunc_t = 
-void (*)(lut1d_t *, int,
-				lut3d_t *, 
-				const displaycolorimetry_t &, EOTF, 
-				const displaycolorimetry_t &, EOTF,
-				const glm::vec2 &, EChromaticAdaptationMethod,
-				const colormapping_t &, const nightmode_t &, const tonemapping_t &,
-				const lut3d_t *, float);
 // Build colorimetry and a gamut mapping for the given SDR configuration
 // Note: the output colorimetry will use the native display's white point
 // Only the color gamut will change
@@ -669,7 +662,11 @@ inline void lerp_rgb(float* out, const float* a, const float* b, const float* c,
 
 inline float ClampAndSanitize( float a, float min, float max )
 {
+#ifndef __FAST_MATH__
     return std::isfinite( a ) ? std::min(std::max(min, a), max) : min;
+#else
+    return std::min(std::max(min, a), max);
+#endif
 }
 
 // Adapted from: