Add fp_exhaustive_test.

This commit is contained in:
Beman
2015-03-20 08:59:47 -04:00
parent e532e9c34d
commit a15f9420cb
5 changed files with 199 additions and 4 deletions

View File

@ -22,4 +22,9 @@ exe "loop_time_test"
: <toolset>gcc:<cxxflags>-march=native
;
install bin : speed_test loop_time_test ;
exe "fp_exhaustive_test"
: fp_exhaustive_test.cpp
: <toolset>gcc:<cxxflags>-march=native
;
install bin : speed_test loop_time_test fp_exhaustive_test ;

View File

@ -171,8 +171,8 @@ namespace endian
{
T tmp(x);
std::reverse(
reinterpret_cast<char*>(&tmp),
reinterpret_cast<char*>(&tmp) + sizeof(T));
reinterpret_cast<unsigned char*>(&tmp),
reinterpret_cast<unsigned char*>(&tmp) + sizeof(T));
return tmp;
}

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@ -0,0 +1,86 @@
// fp_exhaustive_test.cpp ------------------------------------------------------------//
// Copyright Beman Dawes 2015
// Distributed under the Boost Software License, Version 1.0.
// See http://www.boost.org/LICENSE_1_0.txt
// See library home page at http://www.boost.org/libs/endian
//--------------------------------------------------------------------------------------//
#include <boost/endian/detail/disable_warnings.hpp>
//#define BOOST_ENDIAN_LOG
#include <boost/endian/conversion.hpp>
#include <boost/detail/lightweight_main.hpp>
#include <boost/endian/detail/lightweight_test.hpp>
#include <iostream>
#include <iomanip>
#include <sstream>
#include <algorithm>
#include <limits>
#include <climits>
#include <cstring>
using namespace boost::endian;
using std::cout;
using std::endl;
using std::hex;
using std::dec;
using std::numeric_limits;
namespace
{
} // unnamed namespace
//--------------------------------------------------------------------------------------//
int cpp_main(int, char *[])
{
#ifdef BOOST_BIG_ENDIAN
cout << "platform is big endian\n";
#else
cout << "platform is little endian\n";
#endif
cout << "byte swap intrinsics: " BOOST_ENDIAN_INTRINSIC_MSG << endl;
#ifdef BOOST_NO_CXX11_NUMERIC_LIMITS
cout << "BOOST_NO_CXX11_NUMERIC_LIMITS is defined" << endl;
#endif
cout << "Iterations: " << endl;
uint32_t i = 0;
do
{
if (i % 1000000 == 0)
cout << i << endl;
float x = *reinterpret_cast<const float*>(&i);
float rtx = endian_reverse(endian_reverse(x));
if (!BOOST_TEST_MEM_EQ(x, rtx))
{
float erx = endian_reverse(x);
cout << "i = 0X" << detail::to_hex(i) << "\n";
cout << "x = 0X" << detail::to_hex(x) << "\n";
cout << "erx = 0X" << detail::to_hex(erx) << "\n";
cout << "rtx = 0X" << detail::to_hex(rtx) << "\n";
//cout << "i = " << i << " [0X" << hex << i << dec << "], or "
// << *reinterpret_cast<const float*>(&i) << " as float\n"
// "but endian_reverse(endian_reverse()) round-trip yields "
// << endian_reverse(endian_reverse(*reinterpret_cast<const float*>(&i))) << "\n"
// ;
// erx = endian_reverse(x);
break;
}
++i;
} while (i != 0);
cout << "\n done" << endl;
return ::boost::endian::report_errors();
}
#include <boost/endian/detail/disable_warnings_pop.hpp>

View File

@ -1,7 +1,7 @@

Microsoft Visual Studio Solution File, Format Version 12.00
# Visual Studio 14
VisualStudioVersion = 14.0.22512.0
VisualStudioVersion = 14.0.22609.0
MinimumVisualStudioVersion = 10.0.40219.1
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "endian_test", "endian_test\endian_test.vcxproj", "{74C201F3-8308-40BE-BC0F-24974DEAF405}"
EndProject
@ -35,6 +35,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "deprecated_test", "deprecat
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "floating_point_test", "floating_point_test\floating_point_test.vcxproj", "{27E8FDC5-9669-4940-B24F-94B21FFEE649}"
EndProject
Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "fp_exhaustive_test", "fp_exhaustive_test\fp_exhaustive_test.vcxproj", "{E19A89FE-D728-4705-A060-B85E7239984C}"
EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|Win32 = Debug|Win32
@ -161,6 +163,12 @@ Global
{27E8FDC5-9669-4940-B24F-94B21FFEE649}.Release|Win32.ActiveCfg = Release|Win32
{27E8FDC5-9669-4940-B24F-94B21FFEE649}.Release|Win32.Build.0 = Release|Win32
{27E8FDC5-9669-4940-B24F-94B21FFEE649}.Release|x64.ActiveCfg = Release|Win32
{E19A89FE-D728-4705-A060-B85E7239984C}.Debug|Win32.ActiveCfg = Debug|Win32
{E19A89FE-D728-4705-A060-B85E7239984C}.Debug|Win32.Build.0 = Debug|Win32
{E19A89FE-D728-4705-A060-B85E7239984C}.Debug|x64.ActiveCfg = Debug|Win32
{E19A89FE-D728-4705-A060-B85E7239984C}.Release|Win32.ActiveCfg = Release|Win32
{E19A89FE-D728-4705-A060-B85E7239984C}.Release|Win32.Build.0 = Release|Win32
{E19A89FE-D728-4705-A060-B85E7239984C}.Release|x64.ActiveCfg = Release|Win32
EndGlobalSection
GlobalSection(SolutionProperties) = preSolution
HideSolutionNode = FALSE

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@ -0,0 +1,96 @@
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