Expanding Standard Library

Expanding functions in the standard library.

src/StandardLibrary/Functions/SquareRoot.cs

@@ -0,0 +1,36 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace CSMic.StandardLibrary.Functions
+{
+    public class SquareRoot: FunctionBase, ICodedFunction
+    {
+        public string Name
+        {
+            get
+            {
+                return "sqrt";
+            }
+        }
+
+        public override IEnumerable<FunctionArgument> ExpectedArguments
+        {
+            get
+            {
+                yield return new FunctionArgument("value", FunctionValue.NUMBER);
+            }
+        }
+
+        public FunctionValue Execute(params FunctionArgument[] args)
+        {
+            return base.Execute(args, (_args) =>
+            {
+                var input = _args[0].Value;
+                double number = Convert.ToDouble(input.Value);
+
+                return new FunctionValue(FunctionValueType.Numeric, Math.Sqrt(number));
+            });
+        }
+    }
+}