fix denorm functions

Author: alsepkow

include/dxc/Test/HlslTestUtils.h

@@ -470,26 +470,19 @@ inline bool GetTestParamUseWARP(bool defaultVal) {
 
 #ifdef FP_SUBNORMAL
 
-inline bool isdenorm(float f) { return FP_SUBNORMAL == std::fpclassify(f); }
-
-inline bool isdenorm(double d) { return FP_SUBNORMAL == std::fpclassify(d); }
+teamplate<typename T> inline bool isdenorm(T f) {
+  return FP_SUBNORMAL == std::fpclassify(f);
+}
 
 #else
 
-inline bool isdenorm(float f) {
+template <typename T> inline bool isdenorm(T f) {
   return (std::numeric_limits<T>::denorm_min() <= f &&
           f < std::numeric_limits<T>::min()) ||
          (-std::numeric_limits<T>::min() < f &&
           f <= -std::numeric_limits<T>::denorm_min());
 }
 
-inline bool isdenorm(double d) {
-  return (std::numeric_limits<T>::denorm_min() <= d &&
-          d < std::numeric_limits<T>::min()) ||
-         (-std::numeric_limits<T>::min() < d &&
-          d <= -std::numeric_limits<T>::denorm_min());
-}
-
 #endif // FP_SUBNORMAL
 
 inline float ifdenorm_flushf(float a) {