Fix unary_minus_operator

Author: kevyuu

include/nbl/builtin/hlsl/emulated/int64_t.hlsl

@@ -51,7 +51,11 @@ struct emulated_int64_t
     constexpr explicit emulated_int64_t(const emulated_uint64_t& other);
     #endif
 
-    NBL_CONSTEXPR_FUNC emulated_int64_t operator-() NBL_CONST_MEMBER_FUNC;
+    NBL_CONSTEXPR_FUNC emulated_int64_t operator-() NBL_CONST_MEMBER_FUNC
+    {
+        storage_t inverted = ~data;
+        return create(_static_cast<storage_t>(inverted)) + _static_cast<this_t>(1);
+    }
 
 };
 
@@ -377,27 +381,6 @@ NBL_CONSTEXPR_INLINE_NSPC_SCOPE_VAR emulated_uint64_t minus_assign<emulated_uint
 template<>
 NBL_CONSTEXPR_INLINE_NSPC_SCOPE_VAR emulated_int64_t minus_assign<emulated_int64_t>::identity = minus<emulated_int64_t>::identity;
 
-// --------------------------------- Unary operators ------------------------------------------
-// Specializations of the structs found in functional.hlsl
-template<>
-struct unary_minus_operator<emulated_int64_t>
-{
-    using type_t = emulated_int64_t;
-
-    NBL_CONSTEXPR_FUNC type_t operator()(NBL_CONST_REF_ARG(type_t) operand)
-    {
-        using storage_t = type_t::storage_t;
-        storage_t inverted = ~operand.data;
-        return type_t::create(_static_cast<storage_t>(inverted)) + _static_cast<type_t>(1);
-    }
-};
-
-NBL_CONSTEXPR_INLINE_FUNC emulated_int64_t emulated_int64_t::operator-() NBL_CONST_MEMBER_FUNC
-{
-    unary_minus_operator<emulated_int64_t> unaryMinus;
-    return unaryMinus(NBL_DEREF_THIS);
-}
-
 } //namespace nbl
 } //namespace hlsl
 

include/nbl/builtin/hlsl/functional.hlsl

@@ -495,7 +495,17 @@ struct unary_minus_operator
 
     NBL_CONSTEXPR_FUNC T operator()(NBL_CONST_REF_ARG(T) operand)
     {
-        return -operand;
+        return operand.operator-();
+    }
+};
+
+template<typename T> NBL_PARTIAL_REQ_TOP(is_fundamental_v<T>)
+struct unary_minus_operator<T NBL_PARTIAL_REQ_BOT(is_fundamental_v<T>) >
+{
+    using type_t = T;
+    NBL_CONSTEXPR_FUNC T operator()(const T operand)
+    {
+      return -operand;
     }
 };