diff --git a/src/Managed.UnitTests/AssertHelpers.cs b/src/Managed.UnitTests/AssertHelpers.cs
new file mode 100644
index 00000000..8729e478
--- /dev/null
+++ b/src/Managed.UnitTests/AssertHelpers.cs
@@ -0,0 +1,54 @@
+// <copyright file="AssertHelpers.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>
+
+namespace MathNet.Numerics.UnitTests
+{
+    using MbUnit.Framework;
+
+    /// <summary>
+    /// A class which includes some assertion helper methods particularly for numerical code.
+    /// </summary>
+    class AssertHelpers
+    {
+        /// <summary>
+        /// Asserts that the expected value and the actual value are equal up to a certain number of decimal places.
+        /// </summary>
+        /// <param name="expected">The expected value.</param>
+        /// <param name="actual">The actual value.</param>
+        /// <param name="decimalPlaces">The number of decimal places to agree on.</param>
+        public static void AlmostEqual(double expected, double actual, int decimalPlaces)
+        {
+            bool pass = Precision.AlmostEqualInDecimalPlaces(expected, actual, decimalPlaces);
+            if (!pass)
+            {
+                //signals Gallio that the test failed.
+                Assert.Fail("Not equal within {0} places. Expected:{1}; Actual:{2}", decimalPlaces, expected, actual);
+            }
+        }
+    }
+}
diff --git a/src/Managed.UnitTests/DistributionTests/Continuous/NormalTests.cs b/src/Managed.UnitTests/DistributionTests/Continuous/NormalTests.cs
index 782bda14..55e1d1a5 100644
--- a/src/Managed.UnitTests/DistributionTests/Continuous/NormalTests.cs
+++ b/src/Managed.UnitTests/DistributionTests/Continuous/NormalTests.cs
@@ -391,7 +391,7 @@ namespace MathNet.Numerics.UnitTests.DistributionTests
         public void ValidateInverseCumulativeDistribution(double x, double f)
         {
             var n = Normal.WithMeanStdDev(5.0, 2.0);
-            AssertHelpers.AlmostEqual(x, n.InverseCumulativeDistribution(f), 10);
+            AssertHelpers.AlmostEqual(x, n.InverseCumulativeDistribution(f), 15);
         }
     }
 }
diff --git a/src/Native/Native.csproj b/src/Native/Native.csproj
index 8dfd01a8..e9e068f9 100644
--- a/src/Native/Native.csproj
+++ b/src/Native/Native.csproj
@@ -65,6 +65,9 @@
     <Compile Include="..\Managed\Distributions\IDistribution.cs">
       <Link>Distributions\IDistribution.cs</Link>
     </Compile>
+    <Compile Include="..\Managed\Precision.cs">
+      <Link>Precision.cs</Link>
+    </Compile>
     <Compile Include="..\Managed\Properties\Resources.Designer.cs">
       <Link>Properties\Resources.Designer.cs</Link>
     </Compile>