Adding functions to Standard Library

src/StandardLibrary/Functions/Rounding/Round.cs

@@ -0,0 +1,37 @@
+namespace CSMic.StandardLibrary.Functions.Rounding
+{
+    public class Round : FunctionBase, ICodedFunction
+    {
+
+        public string Name
+        {
+            get
+            {
+                return "round";
+            }
+        }
+
+        public override IEnumerable<FunctionArgument> ExpectedArguments
+        {
+            get
+            {
+                yield return new FunctionArgument("value", FunctionValue.NUMBER);
+            }
+        }
+
+        public FunctionValue Execute(params FunctionArgument[] args)
+        {
+            return Execute(args, (_args) =>
+            {
+                var inputValue = _args[0].Value;
+                decimal value = Convert.ToDecimal(inputValue.Value);
+                var inputPrecision = _args[1].Value;
+                decimal precision = Convert.ToDecimal(inputValue.Value);
+                precision = Math.Round(precision);
+                int precisionInt = Convert.ToInt32(precision);
+
+                return new FunctionValue(FunctionValueType.Numeric, Math.Round(value, precisionInt));
+            });
+        }
+    }
+}