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- #ifndef OPENCV_CORE_FAST_MATH_HPP
- #define OPENCV_CORE_FAST_MATH_HPP
- #include "opencv2/core/cvdef.h"
- #if ((defined _MSC_VER && defined _M_X64) || (defined __GNUC__ && defined __x86_64__ \
- && defined __SSE2__ && !defined __APPLE__)) && !defined(__CUDACC__)
- #include <emmintrin.h>
- #endif
- #ifdef __cplusplus
- # include <cmath>
- #else
- # ifdef __BORLANDC__
- # include <fastmath.h>
- # else
- # include <math.h>
- # endif
- #endif
- #ifdef HAVE_TEGRA_OPTIMIZATION
- # include "tegra_round.hpp"
- #endif
- #if defined __GNUC__ && defined __arm__ && (defined __ARM_PCS_VFP || defined __ARM_VFPV3__ || defined __ARM_NEON__) && !defined __SOFTFP__ && !defined(__CUDACC__)
-
- #define ARM_ROUND(_value, _asm_string) \
- int res; \
- float temp; \
- (void)temp; \
- __asm__(_asm_string : [res] "=r" (res), [temp] "=w" (temp) : [value] "w" (_value)); \
- return res
-
- #ifdef __clang__
- #define ARM_ROUND_DBL(value) ARM_ROUND(value, "vcvtr.s32.f64 %[temp], %[value] \n vmov %[res], %[temp]")
- #else
- #define ARM_ROUND_DBL(value) ARM_ROUND(value, "vcvtr.s32.f64 %[temp], %P[value] \n vmov %[res], %[temp]")
- #endif
-
- #define ARM_ROUND_FLT(value) ARM_ROUND(value, "vcvtr.s32.f32 %[temp], %[value]\n vmov %[res], %[temp]")
- #endif
- CV_INLINE int
- cvRound( double value )
- {
- #if ((defined _MSC_VER && defined _M_X64) || (defined __GNUC__ && defined __x86_64__ \
- && defined __SSE2__ && !defined __APPLE__) || CV_SSE2) && !defined(__CUDACC__)
- __m128d t = _mm_set_sd( value );
- return _mm_cvtsd_si32(t);
- #elif defined _MSC_VER && defined _M_IX86
- int t;
- __asm
- {
- fld value;
- fistp t;
- }
- return t;
- #elif ((defined _MSC_VER && defined _M_ARM) || defined CV_ICC || \
- defined __GNUC__) && defined HAVE_TEGRA_OPTIMIZATION
- TEGRA_ROUND_DBL(value);
- #elif defined CV_ICC || defined __GNUC__
- # if defined ARM_ROUND_DBL
- ARM_ROUND_DBL(value);
- # else
- return (int)lrint(value);
- # endif
- #else
-
- return (int)(value + (value >= 0 ? 0.5 : -0.5));
- #endif
- }
- CV_INLINE int cvFloor( double value )
- {
- int i = (int)value;
- return i - (i > value);
- }
- CV_INLINE int cvCeil( double value )
- {
- int i = (int)value;
- return i + (i < value);
- }
- CV_INLINE int cvIsNaN( double value )
- {
- Cv64suf ieee754;
- ieee754.f = value;
- return ((unsigned)(ieee754.u >> 32) & 0x7fffffff) +
- ((unsigned)ieee754.u != 0) > 0x7ff00000;
- }
- CV_INLINE int cvIsInf( double value )
- {
- Cv64suf ieee754;
- ieee754.f = value;
- return ((unsigned)(ieee754.u >> 32) & 0x7fffffff) == 0x7ff00000 &&
- (unsigned)ieee754.u == 0;
- }
- #ifdef __cplusplus
- CV_INLINE int cvRound(float value)
- {
- #if ((defined _MSC_VER && defined _M_X64) || (defined __GNUC__ && defined __x86_64__ \
- && defined __SSE2__ && !defined __APPLE__) || CV_SSE2) && !defined(__CUDACC__)
- __m128 t = _mm_set_ss( value );
- return _mm_cvtss_si32(t);
- #elif defined _MSC_VER && defined _M_IX86
- int t;
- __asm
- {
- fld value;
- fistp t;
- }
- return t;
- #elif ((defined _MSC_VER && defined _M_ARM) || defined CV_ICC || \
- defined __GNUC__) && defined HAVE_TEGRA_OPTIMIZATION
- TEGRA_ROUND_FLT(value);
- #elif defined CV_ICC || defined __GNUC__
- # if defined ARM_ROUND_FLT
- ARM_ROUND_FLT(value);
- # else
- return (int)lrintf(value);
- # endif
- #else
-
- return (int)(value + (value >= 0 ? 0.5f : -0.5f));
- #endif
- }
- CV_INLINE int cvRound( int value )
- {
- return value;
- }
- CV_INLINE int cvFloor( float value )
- {
- int i = (int)value;
- return i - (i > value);
- }
- CV_INLINE int cvFloor( int value )
- {
- return value;
- }
- CV_INLINE int cvCeil( float value )
- {
- int i = (int)value;
- return i + (i < value);
- }
- CV_INLINE int cvCeil( int value )
- {
- return value;
- }
- CV_INLINE int cvIsNaN( float value )
- {
- Cv32suf ieee754;
- ieee754.f = value;
- return (ieee754.u & 0x7fffffff) > 0x7f800000;
- }
- CV_INLINE int cvIsInf( float value )
- {
- Cv32suf ieee754;
- ieee754.f = value;
- return (ieee754.u & 0x7fffffff) == 0x7f800000;
- }
- #endif // __cplusplus
- #endif
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