Removed the Algorithm factory, now just registering the providers in the Control class

Made the managed provider public

src/Numerics/Algorithms/AlgorithmFactory.cs

@@ -1,130 +0,0 @@
-// <copyright file="AlgorithmFactory.cs" company="Math.NET">
-// Math.NET Numerics, part of the Math.NET Project
-// http://mathnet.opensourcedotnet.info
-// Copyright (c) 2009 Math.NET
-// Permission is hereby granted, free of charge, to any person
-// obtaining a copy of this software and associated documentation
-// files (the "Software"), to deal in the Software without
-// restriction, including without limitation the rights to use,
-// copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the
-// Software is furnished to do so, subject to the following
-// conditions:
-// The above copyright notice and this permission notice shall be
-// included in all copies or substantial portions of the Software.
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
-// OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
-// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
-// HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
-// WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
-// OTHER DEALINGS IN THE SOFTWARE.
-// </copyright>
-using System;
-using MathNet.Numerics.Algorithms.LinearAlgebra;
-
-namespace MathNet.Numerics.Algorithms
-{
-    /// <summary>
-    /// Enumerates the linear algebra providers.
-    /// </summary>
-    public enum LinearAlgebraProvider
-    {
-        /// <summary>
-        /// Managed provider
-        /// </summary>
-        Managed, 
-
-        /// <summary>
-        /// User defined provider
-        /// </summary>
-        UserDefined
-
-/*        /// <summary>
-        /// Intel's Math Kernel Library (MKL) Provider
-        /// </summary>
-        Mkl,
-
-        /// <summary>
-        /// Automatically Tuned Linear Algebra Software (ATLAS) Provider
-        /// </summary>
-        Atlas,
-
-        /// <summary>
-        /// AMD Core Math Library (ACML) Provider
-        /// </summary>
-        Acml,
-
-        /// <summary>
-        /// NVIDIA Compute Unified Device Architecture (CUDA) Provider
-        /// </summary>
-        Cuda,
- */
-    }
-
-    /// <summary>
-    /// Lets users choose which algorithm providers to use.
-    /// </summary>
-    public static class AlgorithmFactory
-    {
-        /// <summary>
-        /// The current linear algebra provider - starts as the managed provider.
-        /// </summary>
-        private static Type _linearAlgebraProvider = typeof(ManagedLinearAlgebra);
-
-        /// <summary>
-        /// The type of the user defined linear algebra provider.
-        /// </summary>
-        private static Type _userLinearAlgebraProvider;
-
-        /// <summary>
-        /// Gets the linear algebra provider.
-        /// </summary>
-        /// <value>The linear algebra provider.</value>
-        public static ILinearAlgebra LinearAlgebra
-        {
-            get { return (ILinearAlgebra) Activator.CreateInstance(_linearAlgebraProvider); }
-        }
-
-        /// <summary>
-        /// Sets the linear algebra provider to use.
-        /// </summary>
-        /// <param name="provider">
-        /// The linear algebra provider to use.
-        /// </param>
-        public static void SetLinearAlgebraProvider(LinearAlgebraProvider provider)
-        {
-            switch (provider)
-            {
-                case LinearAlgebraProvider.Managed:
-                    _linearAlgebraProvider = typeof(ManagedLinearAlgebra);
-                    break;
-                case LinearAlgebraProvider.UserDefined:
-                    if (_userLinearAlgebraProvider == null)
-                    {
-                        throw new ArgumentException();
-                    }
-
-                    _linearAlgebraProvider = _userLinearAlgebraProvider;
-                    break;
-            }
-        }
-
-        /// <summary>
-        /// Registers the user defined linear algebra provider.
-        /// </summary>
-        /// <param name="provider">
-        /// The user defined provider.
-        /// </param>
-        public static void RegisterLinearAlgebraProvider(Type provider)
-        {
-            if (provider == null)
-            {
-                throw new ArgumentNullException("provider");
-            }
-
-            _userLinearAlgebraProvider = provider;
-        }
-    }
-}

src/Numerics/Algorithms/LinearAlgebra/ILinearAlgebra.cs → src/Numerics/Algorithms/LinearAlgebra/ILinearAlgebraProvider.cs

@@ -27,7 +27,7 @@ namespace MathNet.Numerics.Algorithms.LinearAlgebra
     /// <summary>
     /// Interface to linear algebra algorithms that work off 1-D arrays.
     /// </summary>
-    public interface ILinearAlgebra
+    public interface ILinearAlgebraProvider
     {
         /// <summary>
         /// Adds a scaled vector to another: <c>y += alpha*x</c>.

src/Numerics/Algorithms/LinearAlgebra/ManagedLinearAlgebra.cs → src/Numerics/Algorithms/LinearAlgebra/ManagedLinearAlgebraProvider.cs

@@ -29,7 +29,7 @@ namespace MathNet.Numerics.Algorithms.LinearAlgebra
     /// <summary>
     /// The managed linear algebra provider.
     /// </summary>
-    internal class ManagedLinearAlgebra : ILinearAlgebra
+    public class ManagedLinearAlgebraProvider : ILinearAlgebraProvider
     {
         /// <summary>
         /// Adds a scaled vector to another: <c>y += alpha*x</c>.

src/Numerics/Control.cs

@@ -28,6 +28,7 @@
 
 namespace MathNet.Numerics
 {
+    using Algorithms.LinearAlgebra;
     using Threading;
 
     /// <summary>
@@ -43,6 +44,7 @@ namespace MathNet.Numerics
             CheckDistributionParameters = true;
             ThreadSafeRandomNumberGenerators = true;
             DisableParallelization = false;
+            LinearAlgebraProvider = new ManagedLinearAlgebraProvider();
         }
 
         /// <summary>
@@ -75,5 +77,14 @@ namespace MathNet.Numerics
         /// Gets or sets a value indicating whether parallelization shall be disabled globally.
         /// </summary>
         public static bool DisableParallelization { get; set; }
+
+        /// <summary>
+        /// Gets or sets the linear algebra provider.
+        /// </summary>
+        /// <value>The linear algebra provider.</value>
+        public static ILinearAlgebraProvider LinearAlgebraProvider
+        {
+            get; set;
+        }
     }
 }

src/Numerics/LinearAlgebra/Double/DenseVector.cs

@@ -42,11 +42,6 @@ namespace MathNet.Numerics.LinearAlgebra.Double
     /// </summary>
     public class DenseVector : Vector
     {
-        /// <summary>
-        /// The linear algebra provider.
-        /// </summary>
-        private readonly ILinearAlgebra _linearAlgebra = AlgorithmFactory.LinearAlgebra;
-        
         /// <summary>
         /// Initializes a new instance of the <see cref="DenseVector"/> class with a given size.
         /// </summary>
@@ -283,7 +278,7 @@ namespace MathNet.Numerics.LinearAlgebra.Double
             }
             else
             {
-                _linearAlgebra.AddVectorToScaledVector(Data, 1.0, denseVector.Data);
+                Control.LinearAlgebraProvider.AddVectorToScaledVector(Data, 1.0, denseVector.Data);
             }
         }
 
@@ -436,7 +431,7 @@ namespace MathNet.Numerics.LinearAlgebra.Double
             }
             else
             {
-                _linearAlgebra.AddVectorToScaledVector(Data, -1.0, denseVector.Data);
+                Control.LinearAlgebraProvider.AddVectorToScaledVector(Data, -1.0, denseVector.Data);
             }
         }
 
@@ -548,7 +543,7 @@ namespace MathNet.Numerics.LinearAlgebra.Double
                 return;
             }
 
-            _linearAlgebra.ScaleArray(scalar, Data);
+            Control.LinearAlgebraProvider.ScaleArray(scalar, Data);
         }
 
         #region Vector Norms

src/Numerics/Numerics.csproj

@@ -44,9 +44,8 @@
     <Reference Include="System.Xml" />
   </ItemGroup>
   <ItemGroup>
-    <Compile Include="Algorithms\AlgorithmFactory.cs" />
+    <Compile Include="Algorithms\LinearAlgebra\ILinearAlgebraProvider.cs" />
-    <Compile Include="Algorithms\LinearAlgebra\ILinearAlgebra.cs" />
+    <Compile Include="Algorithms\LinearAlgebra\ManagedLinearAlgebraProvider.cs" />
-    <Compile Include="Algorithms\LinearAlgebra\ManagedLinearAlgebra.cs" />
     <Compile Include="Combinatorics.cs" />
     <Compile Include="Complex.cs" />
     <Compile Include="Constants.cs" />

src/Numerics/Threading/Task.cs

@@ -120,7 +120,7 @@ namespace MathNet.Numerics.Threading
         {
             while (!IsCompleted && !IsFaulted)
             {
-                Thread.Sleep(100);
+                Thread.Sleep(0);
             }
         }
     }