merged andriy's XOR RNG

src/Numerics/Numerics.csproj

@@ -353,6 +353,7 @@
     <Compile Include="Random\SystemRandomExtensions.cs" />
     <Compile Include="Random\WH1982.cs" />
     <Compile Include="Random\WH2006.cs" />
+    <Compile Include="Random\Xorshift.cs" />
     <Compile Include="Sampling\Sample.Random.cs" />
     <Compile Include="Sampling\Sample.Chebyshev.cs" />
     <Compile Include="Sampling\Sample.Equidistant.cs" />

src/Numerics/Random/Xorshift.cs

@@ -0,0 +1,146 @@
+// <copyright file="Xorshift.cs" company="Math.NET">
+// Math.NET Numerics, part of the Math.NET Project
+// http://numerics.mathdotnet.com
+// http://github.com/mathnet/mathnet-numerics
+// http://mathnetnumerics.codeplex.com
+//
+// Copyright (c) 2009-2010 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>
+namespace MathNet.Numerics.Random
+{
+    using System;
+
+    /// <summary>
+    /// Xor-shift pseudo random number generator (RNG) specified in Marsaglia, George. (2003). Xorshift RNGs.
+    /// http://www.jstatsoft.org/v08/i14/xorshift.pdf
+    /// </summary>
+    public class Xorshift : AbstractRandomNumberGenerator
+    {
+                /// <summary>
+        /// Initializes a new instance of the <see cref="Xorshift"/> class using
+        /// the current time as the seed.
+        /// </summary>
+        /// <remarks>If the seed value is zero, it is set to one. Uses the
+        /// value of <see cref="Control.ThreadSafeRandomNumberGenerators"/> to
+        /// set whether the instance is thread safe.</remarks>
+        public Xorshift() : this((int)DateTime.Now.Ticks)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Xorshift"/> class using
+        /// the current time as the seed.
+        /// </summary>
+        /// <param name="threadSafe">if set to <c>true</c> , the class is thread safe.</param>
+        public Xorshift(bool threadSafe) : this((int)DateTime.Now.Ticks, threadSafe)
+        {
+        }
+
+                /// <summary>
+        /// Initializes a new instance of the <see cref="Xorshift"/> class.
+        /// </summary>
+        /// <param name="seed">The seed value.</param>
+        /// <remarks>If the seed value is zero, it is set to one. Uses the
+        /// value of <see cref="Control.ThreadSafeRandomNumberGenerators"/> to
+        /// set whether the instance is thread safe.</remarks>
+        public Xorshift(int seed) : this(seed, Control.ThreadSafeRandomNumberGenerators)
+        {
+        }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="Xorshift"/> class.
+        /// </summary>
+        /// <param name="seed">The seed value.</param>
+        /// <param name="threadSafe">if set to <c>true</c>, the class is thread safe.</param>
+        public Xorshift(int seed, bool threadSafe) : base(threadSafe)
+        {
+            if (seed == 0)
+            {
+                seed = 1;
+            }
+
+            _x = (uint)seed;
+            _y = YSeed;
+            _z = ZSeed;
+            _w = WSeed;
+        }
+
+        /// <summary>
+        /// Y seed is 423864282.
+        /// </summary>
+        private const uint YSeed = 423864282;
+
+        /// <summary>
+        /// Y seed is 643534723.
+        /// </summary>
+        private const uint ZSeed = 643534723;
+
+        /// <summary>
+        /// W seed is 84452734.
+        /// </summary>
+        private const uint WSeed = 84452734;
+
+        /// <summary>
+        /// The multiplier to compute a double-precision floating point number [0, 1)
+        /// </summary>
+        private const double IntToDoubleMultiplier = 1.0 / (int.MaxValue + 1.0);
+
+        /// <summary>
+        /// Seed or last but three unsigned random number. 
+        /// </summary>
+        private uint _x;
+
+        /// <summary>
+        /// Last but two unsigned random number. 
+        /// </summary>
+        private uint _y;
+
+        /// <summary>
+        /// Last but one unsigned random number. 
+        /// </summary>
+        private uint _z;
+
+        /// <summary>
+        /// Last generated unsigned random number. 
+        /// </summary>
+        private uint _w;
+
+        /// <summary>
+        /// Returns a random number between 0.0 and 1.0.
+        /// </summary>
+        /// <returns>
+        /// A double-precision floating point number greater than or equal to 0.0, and less than 1.0.
+        /// </returns>
+        protected override double DoSample()
+        {
+            var t = _x ^ (_x << 11);
+            _x = _y;
+            _y = _z;
+            _z = _w;
+            _w = (_w ^ (_w >> 19)) ^ (t ^ (t >> 8));
+
+            return (int)(_w >> 1) * IntToDoubleMultiplier;
+        }
+    }
+}

src/Silverlight/Silverlight.csproj

@@ -773,6 +773,9 @@
     <Compile Include="..\Numerics\Random\WH2006.cs">
       <Link>Random\WH2006.cs</Link>
     </Compile>
+    <Compile Include="..\Numerics\Random\Xorshift.cs">
+      <Link>Random\Xorshift.cs</Link>
+    </Compile>
     <Compile Include="..\Numerics\Sampling\Sample.Chebyshev.cs">
       <Link>Sampling\Sample.Chebyshev.cs</Link>
     </Compile>

src/UnitTests/DistributionTests/CommonDistributionTests.cs

@@ -34,7 +34,7 @@ namespace MathNet.Numerics.UnitTests.DistributionTests
     using System.Linq;
     using System.Collections.Generic;
     using MbUnit.Framework;
-    using Random;
+    using Numerics.Random;
     using Statistics;
     using Distributions;
 

src/UnitTests/DistributionTests/Multivariate/MatrixNormalTests.cs

@@ -31,13 +31,9 @@
 namespace MathNet.Numerics.UnitTests.DistributionTests.Multivariate
 {
     using System;
-    using System.Linq;
-    using LinearAlgebra.Generic;
     using MbUnit.Framework;
-    using Random;
     using Distributions;
     using MathNet.Numerics.LinearAlgebra.Double;
-    using MathNet.Numerics.LinearAlgebra.Double.Factorization;
     using MathNet.Numerics.UnitTests.LinearAlgebraTests.Double;
 
     [TestFixture]

src/UnitTests/DistributionTests/Multivariate/NormalGammaTests.cs

@@ -33,7 +33,7 @@ namespace MathNet.Numerics.UnitTests.DistributionTests.Multivariate
 	using System;
 	using System.Linq;
 	using MbUnit.Framework;
-	using Random;
+	using Numerics.Random;
 	using Distributions;
 
 	[TestFixture]

src/UnitTests/LinearAlgebraTests/Complex/MatrixLoader.cs

@@ -72,7 +72,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Complex
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal
                          {
-                             RandomSource = new Random.MersenneTwister(1)
+                             RandomSource = new Numerics.Random.MersenneTwister(1)
                          };
             var matrixA = new DenseMatrix(row, col);
             for (var i = 0; i < row; i++)
@@ -92,7 +92,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Complex
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal
                          {
-                             RandomSource = new Random.MersenneTwister(1)
+                             RandomSource = new Numerics.Random.MersenneTwister(1)
                          };
             var matrixA = new DenseMatrix(order);
             for (var i = 0; i < order; i++)
@@ -112,7 +112,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Complex
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal
                          {
-                             RandomSource = new Random.MersenneTwister(1)
+                             RandomSource = new Numerics.Random.MersenneTwister(1)
                          };
             var v = new DenseVector(order);
             for (var i = 0; i < order; i++)
@@ -129,7 +129,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Complex
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal
                          {
-                             RandomSource = new Random.MersenneTwister(1)
+                             RandomSource = new Numerics.Random.MersenneTwister(1)
                          };
             var matrixA = new UserDefinedMatrix(row, col);
             for (var i = 0; i < row; i++)
@@ -149,7 +149,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Complex
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal
                          {
-                             RandomSource = new Random.MersenneTwister(1)
+                             RandomSource = new Numerics.Random.MersenneTwister(1)
                          };
             var matrixA = new UserDefinedMatrix(order);
             for (var i = 0; i < order; i++)
@@ -169,7 +169,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Complex
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal
                          {
-                             RandomSource = new Random.MersenneTwister(1)
+                             RandomSource = new Numerics.Random.MersenneTwister(1)
                          };
             var v = new UserDefinedVector(order);
             for (var i = 0; i < order; i++)

src/UnitTests/LinearAlgebraTests/Complex32/MatrixLoader.cs

@@ -72,7 +72,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Complex32
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal
                          {
-                             RandomSource = new Random.MersenneTwister(1)
+                             RandomSource = new Numerics.Random.MersenneTwister(1)
                          };
             var matrixA = new DenseMatrix(row, col);
             for (var i = 0; i < row; i++)
@@ -92,7 +92,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Complex32
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal
                          {
-                             RandomSource = new Random.MersenneTwister(1)
+                             RandomSource = new Numerics.Random.MersenneTwister(1)
                          };
             var matrixA = new DenseMatrix(order);
             for (var i = 0; i < order; i++)
@@ -112,7 +112,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Complex32
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal
                          {
-                             RandomSource = new Random.MersenneTwister(1)
+                             RandomSource = new Numerics.Random.MersenneTwister(1)
                          };
             var v = new DenseVector(order);
             for (var i = 0; i < order; i++)
@@ -129,7 +129,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Complex32
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal
                          {
-                             RandomSource = new Random.MersenneTwister(1)
+                             RandomSource = new Numerics.Random.MersenneTwister(1)
                          };
             var matrixA = new UserDefinedMatrix(row, col);
             for (var i = 0; i < row; i++)
@@ -149,7 +149,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Complex32
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal
                          {
-                             RandomSource = new Random.MersenneTwister(1)
+                             RandomSource = new Numerics.Random.MersenneTwister(1)
                          };
             var matrixA = new UserDefinedMatrix(order);
             for (var i = 0; i < order; i++)
@@ -169,7 +169,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Complex32
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal
                          {
-                             RandomSource = new Random.MersenneTwister(1)
+                             RandomSource = new Numerics.Random.MersenneTwister(1)
                          };
             var v = new UserDefinedVector(order);
             for (var i = 0; i < order; i++)

src/UnitTests/LinearAlgebraTests/Double/MatrixLoader.cs

@@ -70,7 +70,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Double
         {
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal();
-            normal.RandomSource = new Random.MersenneTwister(1);
+            normal.RandomSource = new Numerics.Random.MersenneTwister(1);
             var matrixA = new DenseMatrix(row, col);
             for (int i = 0; i < row; i++)
             {
@@ -88,7 +88,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Double
         {
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal();
-            normal.RandomSource = new Random.MersenneTwister(1);
+            normal.RandomSource = new Numerics.Random.MersenneTwister(1);
             var matrixA = new DenseMatrix(order);
             for (int i = 0; i < order; i++)
             {
@@ -106,7 +106,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Double
         {
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal();
-            normal.RandomSource = new Random.MersenneTwister(1);
+            normal.RandomSource = new Numerics.Random.MersenneTwister(1);
             var v = new DenseVector(order);
             for (int i = 0; i < order; i++)
             {
@@ -121,7 +121,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Double
         {
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal();
-            normal.RandomSource = new Random.MersenneTwister(1);
+            normal.RandomSource = new Numerics.Random.MersenneTwister(1);
             var matrixA = new UserDefinedMatrix(row, col);
             for (int i = 0; i < row; i++)
             {
@@ -139,7 +139,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Double
         {
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal();
-            normal.RandomSource = new Random.MersenneTwister(1);
+            normal.RandomSource = new Numerics.Random.MersenneTwister(1);
             var matrixA = new UserDefinedMatrix(order);
             for (int i = 0; i < order; i++)
             {
@@ -157,7 +157,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Double
         {
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal();
-            normal.RandomSource = new Random.MersenneTwister(1);
+            normal.RandomSource = new Numerics.Random.MersenneTwister(1);
             var v = new UserDefinedVector(order);
             for (int i = 0; i < order; i++)
             {

src/UnitTests/LinearAlgebraTests/Single/MatrixLoader.cs

@@ -70,7 +70,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Single
         {
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal();
-            normal.RandomSource = new Random.MersenneTwister(1);
+            normal.RandomSource = new Numerics.Random.MersenneTwister(1);
             var matrixA = new DenseMatrix(row, col);
             for (int i = 0; i < row; i++)
             {
@@ -88,7 +88,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Single
         {
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal();
-            normal.RandomSource = new Random.MersenneTwister(1);
+            normal.RandomSource = new Numerics.Random.MersenneTwister(1);
             var matrixA = new DenseMatrix(order);
             for (int i = 0; i < order; i++)
             {
@@ -106,7 +106,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Single
         {
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal();
-            normal.RandomSource = new Random.MersenneTwister(1);
+            normal.RandomSource = new Numerics.Random.MersenneTwister(1);
             var v = new DenseVector(order);
             for (int i = 0; i < order; i++)
             {
@@ -121,7 +121,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Single
         {
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal();
-            normal.RandomSource = new Random.MersenneTwister(1);
+            normal.RandomSource = new Numerics.Random.MersenneTwister(1);
             var matrixA = new UserDefinedMatrix(row, col);
             for (int i = 0; i < row; i++)
             {
@@ -139,7 +139,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Single
         {
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal();
-            normal.RandomSource = new Random.MersenneTwister(1);
+            normal.RandomSource = new Numerics.Random.MersenneTwister(1);
             var matrixA = new UserDefinedMatrix(order);
             for (int i = 0; i < order; i++)
             {
@@ -157,7 +157,7 @@ namespace MathNet.Numerics.UnitTests.LinearAlgebraTests.Single
         {
             // Fill a matrix with standard random numbers.
             var normal = new Distributions.Normal();
-            normal.RandomSource = new Random.MersenneTwister(1);
+            normal.RandomSource = new Numerics.Random.MersenneTwister(1);
             var v = new UserDefinedVector(order);
             for (int i = 0; i < order; i++)
             {

src/UnitTests/Random/Mcg31m1Tests.cs

@@ -28,11 +28,11 @@
 // OTHER DEALINGS IN THE SOFTWARE.
 // </copyright>
 
-namespace MathNet.Numerics.UnitTests.RandomTests
+namespace MathNet.Numerics.UnitTests.Random
 {
     using MbUnit.Framework;
-    using Random;
+    using Numerics.Random;
-
+    
     [TestFixture]
     public class Mcg31m1Tests : RandomTests
     {

src/UnitTests/Random/Mcg59Tests.cs

@@ -28,10 +28,10 @@
 // OTHER DEALINGS IN THE SOFTWARE.
 // </copyright>
 
-namespace MathNet.Numerics.UnitTests.RandomTests
+namespace MathNet.Numerics.UnitTests.Random
 {
     using MbUnit.Framework;
-    using Random;
+    using Numerics.Random;
 
     [TestFixture]
     public class Mcg59Tests : RandomTests

src/UnitTests/Random/MersenneTwisterTests.cs

@@ -28,10 +28,10 @@
 // OTHER DEALINGS IN THE SOFTWARE.
 // </copyright>
 
-namespace MathNet.Numerics.UnitTests.RandomTests
+namespace MathNet.Numerics.UnitTests.Random
 {
     using MbUnit.Framework;
-    using Random;
+    using Numerics.Random;
 
     [TestFixture]
     public class MersenneTwisterTests : RandomTests

src/UnitTests/Random/Mrg32k3aTests.cs

@@ -28,10 +28,10 @@
 // OTHER DEALINGS IN THE SOFTWARE.
 // </copyright>
 
-namespace MathNet.Numerics.UnitTests.RandomTests
+namespace MathNet.Numerics.UnitTests.Random
 {
     using MbUnit.Framework;
-    using Random;
+    using Numerics.Random;
 
     [TestFixture]
     public class Mrg32k3aTests : RandomTests

src/UnitTests/Random/RandomTests.cs

@@ -28,13 +28,13 @@
 // OTHER DEALINGS IN THE SOFTWARE.
 // </copyright>
 
-namespace MathNet.Numerics.UnitTests.RandomTests
+namespace MathNet.Numerics.UnitTests.Random
 {
     using System;
     using System.Threading;
     using MbUnit.Framework;
 
-	public abstract class RandomTests
+    public abstract class RandomTests
     {
         private const int _n = 10000;
         private readonly Type _randomType;

src/UnitTests/Random/SystemCryptoTests.cs

@@ -28,10 +28,10 @@
 // OTHER DEALINGS IN THE SOFTWARE.
 // </copyright>
 
-namespace MathNet.Numerics.UnitTests.RandomTests
+namespace MathNet.Numerics.UnitTests.Random
 {
     using MbUnit.Framework;
-    using Random;
+    using Numerics.Random;
 
     [TestFixture]
     public class SystemCryptoRandomNumberGeneratorTests : RandomTests

src/UnitTests/Random/SystemRandomExtensionTests.cs

@@ -28,10 +28,10 @@
 // OTHER DEALINGS IN THE SOFTWARE.
 // </copyright>
 
-namespace MathNet.Numerics.UnitTests.RandomTests
+namespace MathNet.Numerics.UnitTests.Random
 {
     using MbUnit.Framework;
-    using Random;
+    using Numerics.Random;
 
     [TestFixture]
     public class SystemRandomExtensionTests

src/UnitTests/Random/WH1982Tests.cs

@@ -28,10 +28,10 @@
 // OTHER DEALINGS IN THE SOFTWARE.
 // </copyright>
 
-namespace MathNet.Numerics.UnitTests.RandomTests
+namespace MathNet.Numerics.UnitTests.Random
 {
     using MbUnit.Framework;
-    using Random;
+    using Numerics.Random;
 
     [TestFixture]
     public class WH1982Tests : RandomTests

src/UnitTests/Random/WH2006Tests.cs

@@ -28,10 +28,10 @@
 // OTHER DEALINGS IN THE SOFTWARE.
 // </copyright>
 
-namespace MathNet.Numerics.UnitTests.RandomTests
+namespace MathNet.Numerics.UnitTests.Random
 {
     using MbUnit.Framework;
-    using Random;
+    using Numerics.Random;
 
     [TestFixture]
     public class WH2006Tests : RandomTests

src/UnitTests/Random/XorshiftTests.cs

@@ -0,0 +1,44 @@
+// <copyright file="XorshiftTests.cs" company="Math.NET">
+// Math.NET Numerics, part of the Math.NET Project
+// http://numerics.mathdotnet.com
+// http://github.com/mathnet/mathnet-numerics
+// http://mathnetnumerics.codeplex.com
+//
+// Copyright (c) 2009-2010 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>
+
+namespace MathNet.Numerics.UnitTests.Random
+{
+    using MbUnit.Framework;
+    using Numerics.Random;
+
+    [TestFixture]
+    public class XorshiftTests : RandomTests
+    {
+        public XorshiftTests()
+            : base(typeof(Xorshift))
+        {
+        }
+    }
+}

src/UnitTests/SortingTests.cs

@@ -42,7 +42,7 @@ namespace MathNet.Numerics.UnitTests
         public void TestRandomTupleArraySorting()
         {
             const int Len = 0x1 << 10;
-            var random = new Random();
+            var random = new System.Random();
 
             int[] keys = new int[Len];
             int[] items = new int[Len];
@@ -73,7 +73,7 @@ namespace MathNet.Numerics.UnitTests
         public void TestRandomTupleListSorting()
         {
             const int Len = 0x1 << 10;
-            var random = new Random();
+            var random = new System.Random();
 
             List<int> keys = new List<int>(Len);
             List<int> items = new List<int>(Len);
@@ -105,7 +105,7 @@ namespace MathNet.Numerics.UnitTests
         public void TestRandomTripleArraySorting()
         {
             const int Len = 0x1 << 10;
-            var random = new Random();
+            var random = new System.Random();
 
             int[] keys = new int[Len];
             int[] items1 = new int[Len];
@@ -139,7 +139,7 @@ namespace MathNet.Numerics.UnitTests
         public void TestAppliedListSorting()
         {
             const int Len = 0x1 << 10;
-            var random = new Random();
+            var random = new System.Random();
 
             List<int> list = new List<int>();
 

src/UnitTests/StatisticsTests/MCMCTests/MetropolisHastingsSamplerTests.cs

@@ -31,7 +31,7 @@
 namespace MathNet.Numerics.UnitTests.StatisticsTests.McmcTests
 {
     using System;
-    using Random;
+    using Numerics.Random;
     using Distributions;
     using Statistics.Mcmc;
     using MbUnit.Framework;

src/UnitTests/StatisticsTests/MCMCTests/MetropolisSamplerTests.cs

@@ -31,7 +31,7 @@
 namespace MathNet.Numerics.UnitTests.StatisticsTests.McmcTests
 {
     using System;
-    using Random;
+    using Numerics.Random;
     using Distributions;
     using Statistics.Mcmc;
     using MbUnit.Framework;

src/UnitTests/StatisticsTests/MCMCTests/RejectionSamplerTests.cs

@@ -31,7 +31,7 @@
 namespace MathNet.Numerics.UnitTests.StatisticsTests.McmcTests
 {
     using System;
-    using Random;
+    using Numerics.Random;
     using Distributions;
     using Statistics.Mcmc;
     using MbUnit.Framework;

src/UnitTests/UnitTests.csproj

@@ -321,6 +321,7 @@
     <Compile Include="NumberTheoryTests\IntegerTheoryTest.cs" />
     <Compile Include="PrecisionTest.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
+    <Compile Include="Random\XorshiftTests.cs" />
     <Compile Include="Random\Mcg31m1Tests.cs" />
     <Compile Include="Random\Mcg59Tests.cs" />
     <Compile Include="Random\MersenneTwisterTests.cs" />