make the host compilers stop moaning about dxc pragma they can't understand

Author: devsh

include/nbl/builtin/hlsl/tgmath/impl.hlsl

@@ -539,10 +539,14 @@ struct l2gamma_helper<T NBL_PARTIAL_REQ_BOT(concepts::FloatingPointScalar<T>) >
 	// implementation derived from Numerical Recipes in C, transformed for log2
 	static T __call(T x)
 	{
+#ifdef __HLSL_VERSION // make the host compilers shut up
 		#pragma dxc diagnostic push
 		#pragma dxc diagnostic ignored "-Wliteral-range"
+#endif
 		const T thresholds[4] = { 0, 5e4, 1e36, 1e305 };	// threshold values gotten from testing when the function returns nan/inf
+#ifdef __HLSL_VERSION // make the host compilers shut up
 		#pragma dxc diagnostic pop
+#endif
 		if (x > thresholds[mpl::find_lsb_v<sizeof(T)>])
 			return bit_cast<T>(numeric_limits<T>::infinity);
 
@@ -584,10 +588,14 @@ struct beta_helper<T NBL_PARTIAL_REQ_BOT(concepts::FloatingPointScalar<T>) >
 	// implementation from Numerical Recipes in C, 2nd ed.
 	static T __call(T v1, T v2)
 	{
+#ifdef __HLSL_VERSION // make the host compilers shut up
 		#pragma dxc diagnostic push
 		#pragma dxc diagnostic ignored "-Wliteral-range"
+#endif
 		const T thresholds[4] = { 0, 2e4, 1e6, 1e15 };	// threshold values gotten from testing when the function returns nan/inf/1
+#ifdef __HLSL_VERSION // make the host compilers shut up
 		#pragma dxc diagnostic pop
+#endif
 		if (v1+v2 > thresholds[mpl::find_lsb_v<sizeof(T)>])
 			return T(0.0);