Merge pull request #12172 from alalek:core_move_const_table

73d44c78 · Alexander Alekhin · 31fef14d · 5b3ac112 · 73d44c78 · 73d44c78
Commit 73d44c78 authored Aug 17, 2018 by Alexander Alekhin
Showing with 408 additions and 350 deletions

mathfuncs.cpp modules/core/src/mathfuncs.cpp +379 -0

mathfuncs.hpp modules/core/src/mathfuncs.hpp +15 -0

mathfuncs_core.simd.hpp modules/core/src/mathfuncs_core.simd.hpp +14 -350

No files found.
--- a/modules/core/src/mathfuncs.cpp
+++ b/modules/core/src/mathfuncs.cpp
@@ -45,6 +45,7 @@
 #include "opencl_kernels_core.hpp"
 #include <limits>
 #include <iostream>
+#include "mathfuncs.hpp"

 namespace cv
 {
@@ -2023,4 +2024,382 @@ void cvSolvePoly(const CvMat* a, CvMat *r, int maxiter, int)
 }


+
+// Common constants for dispatched code
+namespace cv { namespace details {
+
+#define EXPTAB_SCALE 6
+#define EXPTAB_MASK  ((1 << EXPTAB_SCALE) - 1)
+
+#define EXPPOLY_32F_A0 .9670371139572337719125840413672004409288e-2
+
+static const double CV_DECL_ALIGNED(64) expTab[EXPTAB_MASK + 1] = {
+    1.0 * EXPPOLY_32F_A0,
+    1.0108892860517004600204097905619 * EXPPOLY_32F_A0,
+    1.0218971486541166782344801347833 * EXPPOLY_32F_A0,
+    1.0330248790212284225001082839705 * EXPPOLY_32F_A0,
+    1.0442737824274138403219664787399 * EXPPOLY_32F_A0,
+    1.0556451783605571588083413251529 * EXPPOLY_32F_A0,
+    1.0671404006768236181695211209928 * EXPPOLY_32F_A0,
+    1.0787607977571197937406800374385 * EXPPOLY_32F_A0,
+    1.0905077326652576592070106557607 * EXPPOLY_32F_A0,
+    1.1023825833078409435564142094256 * EXPPOLY_32F_A0,
+    1.1143867425958925363088129569196 * EXPPOLY_32F_A0,
+    1.126521618608241899794798643787 * EXPPOLY_32F_A0,
+    1.1387886347566916537038302838415 * EXPPOLY_32F_A0,
+    1.151189229952982705817759635202 * EXPPOLY_32F_A0,
+    1.1637248587775775138135735990922 * EXPPOLY_32F_A0,
+    1.1763969916502812762846457284838 * EXPPOLY_32F_A0,
+    1.1892071150027210667174999705605 * EXPPOLY_32F_A0,
+    1.2021567314527031420963969574978 * EXPPOLY_32F_A0,
+    1.2152473599804688781165202513388 * EXPPOLY_32F_A0,
+    1.2284805361068700056940089577928 * EXPPOLY_32F_A0,
+    1.2418578120734840485936774687266 * EXPPOLY_32F_A0,
+    1.2553807570246910895793906574423 * EXPPOLY_32F_A0,
+    1.2690509571917332225544190810323 * EXPPOLY_32F_A0,
+    1.2828700160787782807266697810215 * EXPPOLY_32F_A0,
+    1.2968395546510096659337541177925 * EXPPOLY_32F_A0,
+    1.3109612115247643419229917863308 * EXPPOLY_32F_A0,
+    1.3252366431597412946295370954987 * EXPPOLY_32F_A0,
+    1.3396675240533030053600306697244 * EXPPOLY_32F_A0,
+    1.3542555469368927282980147401407 * EXPPOLY_32F_A0,
+    1.3690024229745906119296011329822 * EXPPOLY_32F_A0,
+    1.3839098819638319548726595272652 * EXPPOLY_32F_A0,
+    1.3989796725383111402095281367152 * EXPPOLY_32F_A0,
+    1.4142135623730950488016887242097 * EXPPOLY_32F_A0,
+    1.4296133383919700112350657782751 * EXPPOLY_32F_A0,
+    1.4451808069770466200370062414717 * EXPPOLY_32F_A0,
+    1.4609177941806469886513028903106 * EXPPOLY_32F_A0,
+    1.476826145939499311386907480374 * EXPPOLY_32F_A0,
+    1.4929077282912648492006435314867 * EXPPOLY_32F_A0,
+    1.5091644275934227397660195510332 * EXPPOLY_32F_A0,
+    1.5255981507445383068512536895169 * EXPPOLY_32F_A0,
+    1.5422108254079408236122918620907 * EXPPOLY_32F_A0,
+    1.5590044002378369670337280894749 * EXPPOLY_32F_A0,
+    1.5759808451078864864552701601819 * EXPPOLY_32F_A0,
+    1.5931421513422668979372486431191 * EXPPOLY_32F_A0,
+    1.6104903319492543081795206673574 * EXPPOLY_32F_A0,
+    1.628027421857347766848218522014 * EXPPOLY_32F_A0,
+    1.6457554781539648445187567247258 * EXPPOLY_32F_A0,
+    1.6636765803267364350463364569764 * EXPPOLY_32F_A0,
+    1.6817928305074290860622509524664 * EXPPOLY_32F_A0,
+    1.7001063537185234695013625734975 * EXPPOLY_32F_A0,
+    1.7186192981224779156293443764563 * EXPPOLY_32F_A0,
+    1.7373338352737062489942020818722 * EXPPOLY_32F_A0,
+    1.7562521603732994831121606193753 * EXPPOLY_32F_A0,
+    1.7753764925265212525505592001993 * EXPPOLY_32F_A0,
+    1.7947090750031071864277032421278 * EXPPOLY_32F_A0,
+    1.8142521755003987562498346003623 * EXPPOLY_32F_A0,
+    1.8340080864093424634870831895883 * EXPPOLY_32F_A0,
+    1.8539791250833855683924530703377 * EXPPOLY_32F_A0,
+    1.8741676341102999013299989499544 * EXPPOLY_32F_A0,
+    1.8945759815869656413402186534269 * EXPPOLY_32F_A0,
+    1.9152065613971472938726112702958 * EXPPOLY_32F_A0,
+    1.9360617934922944505980559045667 * EXPPOLY_32F_A0,
+    1.9571441241754002690183222516269 * EXPPOLY_32F_A0,
+    1.9784560263879509682582499181312 * EXPPOLY_32F_A0,
+};
+
+const double* getExpTab64f()
+{
+    return expTab;
+}
+
+const float* getExpTab32f()
+{
+    static float CV_DECL_ALIGNED(64) expTab_f[EXPTAB_MASK+1];
+    static volatile bool expTab_f_initialized = false;
+    if (!expTab_f_initialized)
+    {
+        for( int j = 0; j <= EXPTAB_MASK; j++ )
+            expTab_f[j] = (float)expTab[j];
+        expTab_f_initialized = true;
+    }
+    return expTab_f;
+}
+
+
+
+#define LOGTAB_SCALE        8
+#define LOGTAB_MASK         ((1 << LOGTAB_SCALE) - 1)
+
+static const double CV_DECL_ALIGNED(64) logTab[(LOGTAB_MASK+1)*2] = {
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+    .69314718055994530941723212145818, 5.0e-01,
+};
+
+const double* getLogTab64f()
+{
+    return logTab;
+}
+
+const float* getLogTab32f()
+{
+    static float CV_DECL_ALIGNED(64) logTab_f[(LOGTAB_MASK+1)*2];
+    static volatile bool logTab_f_initialized = false;
+    if (!logTab_f_initialized)
+    {
+        for (int j = 0; j < (LOGTAB_MASK+1)*2; j++)
+            logTab_f[j] = (float)logTab[j];
+        logTab_f_initialized = true;
+    }
+    return logTab_f;
+}
+
+}} // namespace
+
 /* End of file. */
--- a/modules/core/src/mathfuncs.hpp
+++ b/modules/core/src/mathfuncs.hpp
+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html.
+
+#ifndef OPENCV_CORE_SRC_MATHFUNCS_HPP
+#define OPENCV_CORE_SRC_MATHFUNCS_HPP
+
+namespace cv { namespace details {
+const double* getExpTab64f();
+const float*  getExpTab32f();
+const double* getLogTab64f();
+const float*  getLogTab32f();
+}} // namespace
+
+#endif // OPENCV_CORE_SRC_MATHFUNCS_HPP
--- a/modules/core/src/mathfuncs_core.simd.hpp
+++ b/modules/core/src/mathfuncs_core.simd.hpp
@@ -2,6 +2,8 @@
 // It is subject to the license terms in the LICENSE file found in the top-level directory
 // of this distribution and at http://opencv.org/license.html.

+#include "mathfuncs.hpp"
+
 namespace cv { namespace hal {

 CV_CPU_OPTIMIZATION_NAMESPACE_BEGIN
@@ -409,76 +411,6 @@ void log64f(const double *src, double *dst, int n)

 #define EXPPOLY_32F_A0 .9670371139572337719125840413672004409288e-2

-static const double expTab[] = {
-    1.0 * EXPPOLY_32F_A0,
-    1.0108892860517004600204097905619 * EXPPOLY_32F_A0,
-    1.0218971486541166782344801347833 * EXPPOLY_32F_A0,
-    1.0330248790212284225001082839705 * EXPPOLY_32F_A0,
-    1.0442737824274138403219664787399 * EXPPOLY_32F_A0,
-    1.0556451783605571588083413251529 * EXPPOLY_32F_A0,
-    1.0671404006768236181695211209928 * EXPPOLY_32F_A0,
-    1.0787607977571197937406800374385 * EXPPOLY_32F_A0,
-    1.0905077326652576592070106557607 * EXPPOLY_32F_A0,
-    1.1023825833078409435564142094256 * EXPPOLY_32F_A0,
-    1.1143867425958925363088129569196 * EXPPOLY_32F_A0,
-    1.126521618608241899794798643787 * EXPPOLY_32F_A0,
-    1.1387886347566916537038302838415 * EXPPOLY_32F_A0,
-    1.151189229952982705817759635202 * EXPPOLY_32F_A0,
-    1.1637248587775775138135735990922 * EXPPOLY_32F_A0,
-    1.1763969916502812762846457284838 * EXPPOLY_32F_A0,
-    1.1892071150027210667174999705605 * EXPPOLY_32F_A0,
-    1.2021567314527031420963969574978 * EXPPOLY_32F_A0,
-    1.2152473599804688781165202513388 * EXPPOLY_32F_A0,
-    1.2284805361068700056940089577928 * EXPPOLY_32F_A0,
-    1.2418578120734840485936774687266 * EXPPOLY_32F_A0,
-    1.2553807570246910895793906574423 * EXPPOLY_32F_A0,
-    1.2690509571917332225544190810323 * EXPPOLY_32F_A0,
-    1.2828700160787782807266697810215 * EXPPOLY_32F_A0,
-    1.2968395546510096659337541177925 * EXPPOLY_32F_A0,
-    1.3109612115247643419229917863308 * EXPPOLY_32F_A0,
-    1.3252366431597412946295370954987 * EXPPOLY_32F_A0,
-    1.3396675240533030053600306697244 * EXPPOLY_32F_A0,
-    1.3542555469368927282980147401407 * EXPPOLY_32F_A0,
-    1.3690024229745906119296011329822 * EXPPOLY_32F_A0,
-    1.3839098819638319548726595272652 * EXPPOLY_32F_A0,
-    1.3989796725383111402095281367152 * EXPPOLY_32F_A0,
-    1.4142135623730950488016887242097 * EXPPOLY_32F_A0,
-    1.4296133383919700112350657782751 * EXPPOLY_32F_A0,
-    1.4451808069770466200370062414717 * EXPPOLY_32F_A0,
-    1.4609177941806469886513028903106 * EXPPOLY_32F_A0,
-    1.476826145939499311386907480374 * EXPPOLY_32F_A0,
-    1.4929077282912648492006435314867 * EXPPOLY_32F_A0,
-    1.5091644275934227397660195510332 * EXPPOLY_32F_A0,
-    1.5255981507445383068512536895169 * EXPPOLY_32F_A0,
-    1.5422108254079408236122918620907 * EXPPOLY_32F_A0,
-    1.5590044002378369670337280894749 * EXPPOLY_32F_A0,
-    1.5759808451078864864552701601819 * EXPPOLY_32F_A0,
-    1.5931421513422668979372486431191 * EXPPOLY_32F_A0,
-    1.6104903319492543081795206673574 * EXPPOLY_32F_A0,
-    1.628027421857347766848218522014 * EXPPOLY_32F_A0,
-    1.6457554781539648445187567247258 * EXPPOLY_32F_A0,
-    1.6636765803267364350463364569764 * EXPPOLY_32F_A0,
-    1.6817928305074290860622509524664 * EXPPOLY_32F_A0,
-    1.7001063537185234695013625734975 * EXPPOLY_32F_A0,
-    1.7186192981224779156293443764563 * EXPPOLY_32F_A0,
-    1.7373338352737062489942020818722 * EXPPOLY_32F_A0,
-    1.7562521603732994831121606193753 * EXPPOLY_32F_A0,
-    1.7753764925265212525505592001993 * EXPPOLY_32F_A0,
-    1.7947090750031071864277032421278 * EXPPOLY_32F_A0,
-    1.8142521755003987562498346003623 * EXPPOLY_32F_A0,
-    1.8340080864093424634870831895883 * EXPPOLY_32F_A0,
-    1.8539791250833855683924530703377 * EXPPOLY_32F_A0,
-    1.8741676341102999013299989499544 * EXPPOLY_32F_A0,
-    1.8945759815869656413402186534269 * EXPPOLY_32F_A0,
-    1.9152065613971472938726112702958 * EXPPOLY_32F_A0,
-    1.9360617934922944505980559045667 * EXPPOLY_32F_A0,
-    1.9571441241754002690183222516269 * EXPPOLY_32F_A0,
-    1.9784560263879509682582499181312 * EXPPOLY_32F_A0,
-};
-
-static float expTab_f[EXPTAB_MASK+1];
-static volatile bool extTab_f_initialized = false;
-
 // the code below uses _mm_cast* intrinsics, which are not avialable on VS2005
 #if (defined _MSC_VER && _MSC_VER < 1500) || \
 (!defined __APPLE__ && defined __GNUC__ && __GNUC__*100 + __GNUC_MINOR__ < 402)
@@ -494,14 +426,9 @@ void exp32f( const float *_x, float *y, int n )
 {
    CV_INSTRUMENT_REGION()

-    if( !extTab_f_initialized )
-    {
-        for( int j = 0; j <= EXPTAB_MASK; j++ )
-            expTab_f[j] = (float)expTab[j];
-        extTab_f_initialized = true;
-    }
+    const float* const expTab_f = cv::details::getExpTab32f();

-    static const float
+    const float
    A4 = (float)(1.000000000000002438532970795181890933776 / EXPPOLY_32F_A0),
    A3 = (float)(.6931471805521448196800669615864773144641 / EXPPOLY_32F_A0),
    A2 = (float)(.2402265109513301490103372422686535526573 / EXPPOLY_32F_A0),
@@ -612,7 +539,9 @@ void exp64f( const double *_x, double *y, int n )
 {
    CV_INSTRUMENT_REGION()

-    static const double
+    const double* const expTab = cv::details::getExpTab64f();
+
+    const double
    A5 = .99999999999999999998285227504999 / EXPPOLY_32F_A0,
    A4 = .69314718055994546743029643825322 / EXPPOLY_32F_A0,
    A3 = .24022650695886477918181338054308 / EXPPOLY_32F_A0,
@@ -737,268 +666,6 @@ void exp64f( const double *_x, double *y, int n )
 #define LOGTAB_SCALE        8
 #define LOGTAB_MASK         ((1 << LOGTAB_SCALE) - 1)

-static const double CV_DECL_ALIGNED(16) logTab[] = {
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-    .01165061721997527263705585198749759001657,    .9884169884169884169884169884169884169884,
-    .01550418653596525274396267235488267033361,    .9846153846153846153846153846153846153846,
-    .01934296284313093139406447562578250654042,    .9808429118773946360153256704980842911877,
-    .02316705928153437593630670221500622574241,    .9770992366412213740458015267175572519084,
-    .02697658769820207233514075539915211265906,    .9733840304182509505703422053231939163498,
-    .03077165866675368732785500469617545604706,    .9696969696969696969696969696969696969697,
-    .03455238150665972812758397481047722976656,    .9660377358490566037735849056603773584906,
-    .03831886430213659461285757856785494368522,    .9624060150375939849624060150375939849624,
-    .04207121392068705056921373852674150839447,    .9588014981273408239700374531835205992509,
-    .04580953603129420126371940114040626212953,    .9552238805970149253731343283582089552239,
-    .04953393512227662748292900118940451648088,    .9516728624535315985130111524163568773234,
-    .05324451451881227759255210685296333394944,    .9481481481481481481481481481481481481481,
-    .05694137640013842427411105973078520037234,    .9446494464944649446494464944649446494465,
-    .06062462181643483993820353816772694699466,    .9411764705882352941176470588235294117647,
-    .06429435070539725460836422143984236754475,    .9377289377289377289377289377289377289377,
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-    .07159365318700880442825962290953611955044,    .9309090909090909090909090909090909090909,
-    .07522342123758751775142172846244648098944,    .9275362318840579710144927536231884057971,
-    .07884006170777602129362549021607264876369,    .9241877256317689530685920577617328519856,
-    .08244366921107458556772229485432035289706,    .9208633093525179856115107913669064748201,
-    .08603433734180314373940490213499288074675,    .9175627240143369175627240143369175627240,
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-    .09317722485418328259854092721070628613231,    .9110320284697508896797153024911032028470,
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-};
-
-static float logTab_f[(LOGTAB_MASK+1)*2];
-static volatile bool logTab_f_initialized = false;
-
 #define LOGTAB_TRANSLATE(tab, x, h) (((x) - 1.f)*tab[(h)+1])
 static const double ln_2 = 0.69314718055994530941723212145818;

@@ -1006,15 +673,10 @@ void log32f( const float *_x, float *y, int n )
 {
    CV_INSTRUMENT_REGION()

-    if( !logTab_f_initialized )
-    {
-        for( int j = 0; j < (LOGTAB_MASK+1)*2; j++ )
-            logTab_f[j] = (float)logTab[j];
-        logTab_f_initialized = true;
-    }
+    const float* const logTab_f = cv::details::getLogTab32f();

-    static const int LOGTAB_MASK2_32F = (1 << (23 - LOGTAB_SCALE)) - 1;
-    static const float
+    const int LOGTAB_MASK2_32F = (1 << (23 - LOGTAB_SCALE)) - 1;
+    const float
    A0 = 0.3333333333333333333333333f,
    A1 = -0.5f,
    A2 = 1.f;
@@ -1082,8 +744,10 @@ void log64f( const double *x, double *y, int n )
 {
    CV_INSTRUMENT_REGION()

-    static const int64 LOGTAB_MASK2_64F = ((int64)1 << (52 - LOGTAB_SCALE)) - 1;
-    static const double
+    const double* const logTab = cv::details::getLogTab64f();
+
+    const int64 LOGTAB_MASK2_64F = ((int64)1 << (52 - LOGTAB_SCALE)) - 1;
+    const double
    A7 = 1.0,
    A6 = -0.5,
    A5 = 0.333333333333333314829616256247390992939472198486328125,