RootFinding: apply common algorithms pattern

src/Numerics/Numerics.csproj

@@ -111,7 +111,8 @@
     <Compile Include="LinearAlgebra\Generic\Vector.BCL.cs" />
     <Compile Include="NonConvergenceException.cs" />
     <Compile Include="RootFinding\Bracketing.cs" />
-    <Compile Include="RootFinding\FindRoots.cs" />
+    <Compile Include="RootFinding\Algorithms\Brent.cs" />
+    <Compile Include="RootFinding\FloatingPointRoots.cs" />
     <Compile Include="SpecialFunctions\Evaluate.cs" />
     <Compile Include="SpecialFunctions\ModifiedStruve.cs" />
     <Compile Include="SpecialFunctions\ModifiedBessel.cs" />
@@ -486,6 +487,7 @@
   <ItemGroup>
     <None Include="MathNet.Numerics.snk" />
   </ItemGroup>
+  <ItemGroup />
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <PropertyGroup>
     <PreBuildEvent>

src/Numerics/RootFinding/FindRoots.cs → src/Numerics/RootFinding/Algorithms/Brent.cs

@@ -1,4 +1,4 @@
-// <copyright file="FindRoots.cs" company="Math.NET">
+// <copyright file="Brent.cs" company="Math.NET">
 // Math.NET Numerics, part of the Math.NET Project
 // http://numerics.mathdotnet.com
 // http://github.com/mathnet/mathnet-numerics
@@ -30,9 +30,9 @@
 
 using System;
 
-namespace MathNet.Numerics.RootFinding
+namespace MathNet.Numerics.RootFinding.Algorithms
 {
-    public static class FindRoots
+    public static class Brent
     {
         /// <summary>Find a solution of the equation f(x)=0.</summary>
         /// <param name="f">The function to find roots from.</param>
@@ -46,7 +46,7 @@ namespace MathNet.Numerics.RootFinding
         /// Implementation inspired by Press, Teukolsky, Vetterling, and Flannery, "Numerical Recipes in C", 2nd edition, Cambridge University Press
         /// </remarks>
         /// <exception cref="NonConvergenceException"></exception>
-        public static double BrentMethod(Func<double, double> f, double xmin, double xmax, double accuracy = 1e-8, int maxIterations = 100)
+        public static double FindRoot(Func<double, double> f, double xmin, double xmax, double accuracy = 1e-8, int maxIterations = 100)
         {
             double fxmin = f(xmin);
             double fxmax = f(xmax);

src/Numerics/RootFinding/FloatingPointRoots.cs

@@ -0,0 +1,43 @@
+// <copyright file="FloatingPointRoots.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) 2009-2013 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.RootFinding.Algorithms;
+
+namespace MathNet.Numerics.RootFinding
+{
+    public static class FloatingPointRoots
+    {
+        public static double Find(Func<double, double> f, double xmin, double xmax)
+        {
+            return Brent.FindRoot(f, xmin, xmax, 1e-8, 100);
+        }
+    }
+}

src/Portable/Portable.csproj

@@ -984,11 +984,14 @@
     <Compile Include="..\Numerics\Random\Xorshift.cs">
       <Link>Random\Xorshift.cs</Link>
     </Compile>
+    <Compile Include="..\Numerics\RootFinding\Algorithms\Brent.cs">
+      <Link>RootFinding\Algorithms\Brent.cs</Link>
+    </Compile>
     <Compile Include="..\Numerics\RootFinding\Bracketing.cs">
       <Link>RootFinding\Bracketing.cs</Link>
     </Compile>
-    <Compile Include="..\Numerics\RootFinding\FindRoots.cs">
-      <Link>RootFinding\FindRoots.cs</Link>
+    <Compile Include="..\Numerics\RootFinding\FloatingPointRoots.cs">
+      <Link>RootFinding\FloatingPointRoots.cs</Link>
     </Compile>
     <Compile Include="..\Numerics\SerializableAttribute.cs">
       <Link>SerializableAttribute.cs</Link>

src/UnitTests/RootFindingTests/BrentTest.cs

@@ -28,7 +28,7 @@
 // OTHER DEALINGS IN THE SOFTWARE.
 // </copyright>
 
-using MathNet.Numerics.RootFinding;
+using MathNet.Numerics.RootFinding.Algorithms;
 using NUnit.Framework;
 
 namespace MathNet.Numerics.UnitTests.RootFindingTests
@@ -39,7 +39,7 @@ namespace MathNet.Numerics.UnitTests.RootFindingTests
         [Test]
         public void MultipleRoots()
         {
-            double root = FindRoots.BrentMethod(x => x*x - 4, -5, 5, 1e-14, 100);
+            double root = Brent.FindRoot(x => x*x - 4, -5, 5, 1e-14, 100);
             Assert.AreEqual(0, root*root - 4);
         }
     }