diff --git a/mcl.sln b/mcl.sln
index 9fdaf2a..7c4fe8f 100644
--- a/mcl.sln
+++ b/mcl.sln
@@ -1,6 +1,6 @@
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio Express 2013 for Windows Desktop
-VisualStudioVersion = 12.0.31101.0
+# Visual Studio 2013
+VisualStudioVersion = 12.0.40629.0
 MinimumVisualStudioVersion = 10.0.40219.1
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "fp_test", "test\proj\fp_test\fp_test.vcxproj", "{51266DE6-B57B-4AE3-B85C-282F170E1728}"
 	ProjectSection(ProjectDependencies) = postProject
@@ -19,6 +19,11 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "fp_tower_test", "test\proj\
 		{1DBB979A-C212-45CD-9563-446A96F87F71} = {1DBB979A-C212-45CD-9563-446A96F87F71}
 	EndProjectSection
 EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "bn_test", "test\proj\bn_test\bn_test.vcxproj", "{9F935350-2F4C-45FA-A1C2-1D5AA0EADC96}"
+	ProjectSection(ProjectDependencies) = postProject
+		{1DBB979A-C212-45CD-9563-446A96F87F71} = {1DBB979A-C212-45CD-9563-446A96F87F71}
+	EndProjectSection
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|x64 = Debug|x64
@@ -41,6 +46,10 @@ Global
 		{733B6250-D249-4A99-B2A6-C8FAF6A90E97}.Debug|x64.Build.0 = Debug|x64
 		{733B6250-D249-4A99-B2A6-C8FAF6A90E97}.Release|x64.ActiveCfg = Release|x64
 		{733B6250-D249-4A99-B2A6-C8FAF6A90E97}.Release|x64.Build.0 = Release|x64
+		{9F935350-2F4C-45FA-A1C2-1D5AA0EADC96}.Debug|x64.ActiveCfg = Debug|x64
+		{9F935350-2F4C-45FA-A1C2-1D5AA0EADC96}.Debug|x64.Build.0 = Debug|x64
+		{9F935350-2F4C-45FA-A1C2-1D5AA0EADC96}.Release|x64.ActiveCfg = Release|x64
+		{9F935350-2F4C-45FA-A1C2-1D5AA0EADC96}.Release|x64.Build.0 = Release|x64
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
diff --git a/test/proj/bn_test/bn_test.vcxproj b/test/proj/bn_test/bn_test.vcxproj
new file mode 100644
index 0000000..936e075
--- /dev/null
+++ b/test/proj/bn_test/bn_test.vcxproj
@@ -0,0 +1,88 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|x64">
+      <Configuration>Debug</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|x64">
+      <Configuration>Release</Configuration>
+      <Platform>x64</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{9F935350-2F4C-45FA-A1C2-1D5AA0EADC96}</ProjectGuid>
+    <Keyword>Win32Proj</Keyword>
+    <RootNamespace>bn_test</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <WholeProgramOptimization>true</WholeProgramOptimization>
+    <CharacterSet>MultiByte</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="$(SolutionDir)common.props" />
+    <Import Project="$(SolutionDir)debug.props" />
+  </ImportGroup>
+  <ImportGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="PropertySheets">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+    <Import Project="$(SolutionDir)common.props" />
+    <Import Project="$(SolutionDir)release.props" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'">
+    <ClCompile>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PrecompiledHeader>
+      </PrecompiledHeader>
+      <Optimization>MaxSpeed</Optimization>
+      <FunctionLevelLinking>true</FunctionLevelLinking>
+      <IntrinsicFunctions>true</IntrinsicFunctions>
+      <PreprocessorDefinitions>WIN32;NDEBUG;_CONSOLE;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+    </ClCompile>
+    <Link>
+      <SubSystem>Console</SubSystem>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <EnableCOMDATFolding>true</EnableCOMDATFolding>
+      <OptimizeReferences>true</OptimizeReferences>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <ClCompile Include="$(SolutionDir)test\\bn_test.cpp" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file