Add new abstract class: StaticStorageIndexer

Signed-off-by: Alexander Karatarakis <alex@karatarakis.com>

src/Numerics/LinearAlgebra/Storage/Indexers/Static/StaticStorageIndexer.cs

@@ -0,0 +1,56 @@
+namespace MathNet.Numerics.LinearAlgebra.Storage.Indexers.Static
+{
+    /// <summary>
+    ///   Classes that contain indexing information of a static storage scheme.
+    /// </summary>
+    /// <remarks>
+    ///   A static storage scheme is always the same and only depends on the size of the matrix. 
+    /// </remarks>
+    public abstract class StaticStorageIndexer : IStorageIndexer
+    {
+        /// <summary>
+        ///   Gets the index of the given element.
+        /// </summary>
+        /// <param name = "row">
+        ///   The row of the element.
+        /// </param>
+        /// <param name = "column">
+        ///   The column of the element.
+        /// </param>
+        /// <remarks>
+        ///   This method is parameter checked. <see cref = "IStorageIndexer.IndexOf(int,int)" /> and <see cref = "IStorageIndexer.IndexOfDiagonal(int)" /> to get values without parameter checking.
+        /// </remarks>
+        public abstract int this[int row, int column]
+        {
+            get;
+        }
+
+        /// <summary>
+        ///    Gets the length of the stored data.
+        /// </summary>
+        public abstract int DataLength
+        {
+            get;
+        }
+
+        /// <summary>
+        ///  Retrieves the index of the requested element without parameter checking.
+        ///  </summary><param name="row">
+        ///  The row of the element. 
+        ///  </param><param name="column">
+        ///  The column of the element. 
+        ///  </param><returns>
+        ///  The requested index. 
+        /// </returns>
+        public abstract int IndexOf(int row, int column);
+
+        /// <summary>
+        ///  Retrieves the index of the requested diagonal element without parameter checking.
+        ///  </summary><param name="row">
+        ///  The row=column of the diagonal element. 
+        ///  </param><returns>
+        ///  The requested index. 
+        /// </returns>
+        public abstract int IndexOfDiagonal(int row);
+    }
+}

src/Numerics/Numerics.csproj

@@ -142,6 +142,7 @@
     <Compile Include="Distributions\Multivariate\Wishart.cs" />
     <Compile Include="LinearAlgebra\Storage\DenseVectorStorage.cs" />
     <Compile Include="LinearAlgebra\Storage\Indexers\IStorageIndexer.cs" />
+    <Compile Include="LinearAlgebra\Storage\Indexers\Static\StaticStorageIndexer.cs" />
     <Compile Include="LinearAlgebra\Storage\MatrixStorage.Validation.cs" />
     <Compile Include="LinearAlgebra\Complex32\ExtensionMethods.cs" />
     <Compile Include="LinearAlgebra\Complex32\Factorization\Cholesky.cs" />
@@ -481,9 +482,7 @@
   <ItemGroup>
     <None Include="MathNet.Numerics.snk" />
   </ItemGroup>
-  <ItemGroup>
-    <Folder Include="LinearAlgebra\Storage\Indexers\Static\" />
-  </ItemGroup>
+  <ItemGroup />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
     <PreBuildEvent>