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Fixed most of the floating-point accuracy problems for x86 gcc

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This commit is contained in:
Andrey Kamaev 2012-04-25 11:33:11 +00:00
parent a6c261bebd
commit 8d130ff10c
3 changed files with 6 additions and 5 deletions
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6
cmake/OpenCVCompilerOptions.cmake
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@ -109,7 +109,11 @@ if(CMAKE_COMPILER_IS_GNUCXX)
if(X86 OR X86_64)
if(NOT APPLE AND CMAKE_SIZEOF_VOID_P EQUAL 4)
set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} -mfpmath=387")
if(ENABLE_SSE2)
set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} -mfpmath=sse")# !! important - be on the same wave with x64 compilers
else()
set(OPENCV_EXTRA_C_FLAGS_RELEASE "${OPENCV_EXTRA_C_FLAGS_RELEASE} -mfpmath=387")
endif()
endif()
endif()

3
modules/core/src/stat.cpp
View File

@ -834,7 +834,6 @@ float normL2Sqr_(const float* a, const float* b, int n)
}
else
#endif
//vz why do we need unroll here? no sse = no need to unroll
{
for( ; j <= n - 4; j += 4 )
{
@ -875,7 +874,6 @@ float normL1_(const float* a, const float* b, int n)
}
else
#endif
//vz no need to unroll here - if no sse
{
for( ; j <= n - 4; j += 4 )
{
@ -916,7 +914,6 @@ int normL1_(const uchar* a, const uchar* b, int n)
}
else
#endif
//vz why do we need unroll here? no sse = no unroll
{
for( ; j <= n - 4; j += 4 )
{

2
modules/nonfree/test/test_features2d.cpp
View File

@ -992,7 +992,7 @@ TEST( Features2d_DescriptorExtractor_SIFT, regression )
TEST( Features2d_DescriptorExtractor_SURF, regression )
{
CV_DescriptorExtractorTest<L2<float> > test( "descriptor-surf", 0.035f,
CV_DescriptorExtractorTest<L2<float> > test( "descriptor-surf", 0.05f,
DescriptorExtractor::create("SURF"), 0.147372f );
test.safe_run();
}