Managed API: Refactoring and formatting.

Signed-off-by: Christoph M. Wintersteiger <cwinter@microsoft.com>

src/api/dotnet/BitVecExpr.cs

@@ -0,0 +1,48 @@
+/*++
+Copyright (<c>) 2012 Microsoft Corporation
+
+Module Name:
+
+    BitVecExpr.cs
+
+Abstract:
+
+    Z3 Managed API: BitVec Expressions
+
+Author:
+
+    Christoph Wintersteiger (cwinter) 2012-11-23
+
+Notes:
+    
+--*/
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+using System.Diagnostics.Contracts;
+
+namespace Microsoft.Z3
+{
+    /// <summary>
+    /// Bit-vector expressions
+    /// </summary>
+    public class BitVecExpr : Expr
+    {
+
+        /// <summary>
+        /// The size of the sort of a bit-vector term.
+        /// </summary>
+        public uint SortSize
+        {
+            get { return ((BitVecSort)Sort).Size; }
+        }
+
+        #region Internal
+        /// <summary> Constructor for BitVecExpr </summary>
+        internal protected BitVecExpr(Context ctx) : base(ctx) { Contract.Requires(ctx != null); }
+        internal BitVecExpr(Context ctx, IntPtr obj) : base(ctx, obj) { Contract.Requires(ctx != null); }
+        #endregion
+    }
+}