1 files changed, 39 insertions, 0 deletions
diff --git a/src/mscorlib/shared/System/Runtime/CompilerServices/DecimalConstantAttribute.cs b/src/mscorlib/shared/System/Runtime/CompilerServices/DecimalConstantAttribute.cs
new file mode 100644
index 0000000000..19db84eb43
--- /dev/null
+++ b/src/mscorlib/shared/System/Runtime/CompilerServices/DecimalConstantAttribute.cs
@@ -0,0 +1,39 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+// Note: If you add a new ctor overloads you need to update ParameterInfo.RawDefaultValue
+
+namespace System.Runtime.CompilerServices
+{
+    [AttributeUsage(AttributeTargets.Field | AttributeTargets.Parameter, Inherited = false)]
+    public sealed class DecimalConstantAttribute : Attribute
+    {
+        private Decimal _dec;
+
+        [CLSCompliant(false)]
+        public DecimalConstantAttribute(
+            byte scale,
+            byte sign,
+            uint hi,
+            uint mid,
+            uint low
+        )
+        {
+            _dec = new Decimal((int)low, (int)mid, (int)hi, (sign != 0), scale);
+        }
+
+        public DecimalConstantAttribute(
+            byte scale,
+            byte sign,
+            int hi,
+            int mid,
+            int low
+        )
+        {
+            _dec = new Decimal(low, mid, hi, (sign != 0), scale);
+        }
+
+        public Decimal Value => _dec;
+    }
+}