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turn off SSE2 optimization in cv::exp & cv::log in the case of VS2005 or earlier versions, because of missing _mm_cast* intrinsics (ticket #729)

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Vadim Pisarevsky 2010-12-05 02:26:04 +00:00
parent 9dfb15dbbd
commit 9d8644dee0
1 changed files with 8 additions and 1 deletions
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7
modules/core/src/mathfuncs.cpp
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@ -42,6 +42,7 @@
#include "precomp.hpp"
namespace cv
{
@ -771,6 +772,12 @@ static const double expTab[] = {
};
// the code below uses _mm_cast* intrinsics, which are not avialable on VS2005
#if defined _MSC_VER && _MSC_VER < 1500
#undef CV_SSE2
#define CV_SSE2 0
#endif
static const double exp_prescale = 1.4426950408889634073599246810019 * (1 << EXPTAB_SCALE);
static const double exp_postscale = 1./(1 << EXPTAB_SCALE);
static const double exp_max_val = 3000.*(1 << EXPTAB_SCALE); // log10(DBL_MAX) < 3000