Remove gcd function from core headers

modules/core/include/opencv2/core/operations.hpp

@@ -1036,18 +1036,7 @@ inline FileNode FileStorage::getFirstTopLevelNode() const
 
 //////////////////////////////////////// Various algorithms ////////////////////////////////////
 
-template<typename _Tp> static inline _Tp gcd(_Tp a, _Tp b)
-{
-    if( a < b )
-        std::swap(a, b);
-    while( b > 0 )
-    {
-        _Tp r = a % b;
-        a = b;
-        b = r;
-    }
-    return a;
-}
+
 
 // This function splits the input sequence or set into one or more equivalence classes and
 // returns the vector of labels - 0-based class indexes for each element.

modules/objdetect/src/hog.cpp

@@ -362,27 +362,27 @@ void HOGDescriptor::computeGradient(const Mat& img, Mat& grad, Mat& qangle,
         __m128 fhalf = _mm_set1_ps(0.5f), fzero = _mm_setzero_ps();
         __m128 _angleScale = _mm_set1_ps(angleScale), fone = _mm_set1_ps(1.0f);
         __m128i ione = _mm_set1_epi32(1), _nbins = _mm_set1_epi32(nbins), izero = _mm_setzero_si128();
-        
+
         for ( ; x <= width - 4; x += 4)
         {
             int x2 = x << 1;
             __m128 _mag = _mm_loadu_ps(dbuf + x + (width << 1));
             __m128 _angle = _mm_loadu_ps(dbuf + x + width * 3);
             _angle = _mm_sub_ps(_mm_mul_ps(_angleScale, _angle), fhalf);
-            
+
             __m128 sign = _mm_and_ps(fone, _mm_cmplt_ps(_angle, fzero));
             __m128i _hidx = _mm_cvttps_epi32(_angle);
             _hidx = _mm_sub_epi32(_hidx, _mm_cvtps_epi32(sign));
             _angle = _mm_sub_ps(_angle, _mm_cvtepi32_ps(_hidx));
-            
+
             __m128 ft0 = _mm_mul_ps(_mag, _mm_sub_ps(fone, _angle));
             __m128 ft1 = _mm_mul_ps(_mag, _angle);
             __m128 ft2 = _mm_unpacklo_ps(ft0, ft1);
             __m128 ft3 = _mm_unpackhi_ps(ft0, ft1);
-            
+
             _mm_storeu_ps(gradPtr + x2, ft2);
             _mm_storeu_ps(gradPtr + x2 + 4, ft3);
-            
+
             __m128i mask0 = _mm_sub_epi32(izero, _mm_srli_epi32(_hidx, 31));
             __m128i it0 = _mm_and_si128(mask0, _nbins);
             mask0 = _mm_cmplt_epi32(_hidx, _nbins);
@@ -428,7 +428,7 @@ struct HOGCache
         BlockData() :
             histOfs(0), imgOffset()
         { }
-        
+
         int histOfs;
         Point imgOffset;
     };
@@ -455,7 +455,7 @@ struct HOGCache
 
     const float* getBlock(Point pt, float* buf);
     virtual void normalizeBlockHistogram(float* histogram) const;
-    
+
     std::vector<PixData> pixData;
     std::vector<BlockData> blockData;
 
@@ -540,7 +540,7 @@ void HOGCache::init(const HOGDescriptor* _descriptor,
         __m128i idx = _mm_loadu_si128((__m128i*)a);
         __m128 _bw = _mm_set1_ps(bw), _bh = _mm_set1_ps(bh);
         __m128i ifour = _mm_set1_epi32(4);
-        
+
         for (; i <= blockSize.height - 4; i += 4)
         {
             __m128 t = _mm_sub_ps(_mm_cvtepi32_ps(idx), _bh);
@@ -617,7 +617,7 @@ void HOGCache::init(const HOGDescriptor* _descriptor,
             int icellX1 = icellX0 + 1, icellY1 = icellY0 + 1;
             cellX -= icellX0;
             cellY -= icellY0;
-            
+
             if( (unsigned)icellX0 < (unsigned)ncells.width &&
                (unsigned)icellX1 < (unsigned)ncells.width )
             {
@@ -657,7 +657,7 @@ void HOGCache::init(const HOGDescriptor* _descriptor,
                     icellX1 = icellX0;
                     cellX = 1.f - cellX;
                 }
-                
+
                 if( (unsigned)icellY0 < (unsigned)ncells.height &&
                    (unsigned)icellY1 < (unsigned)ncells.height )
                 {
@@ -687,7 +687,7 @@ void HOGCache::init(const HOGDescriptor* _descriptor,
             data->qangleOfs = (qangle.cols*i + j)*2;
             data->gradWeight = weights(i,j);
         }
-    
+
     assert( count1 + count2 + count4 == rawBlockSize );
     // defragment pixData
     for( j = 0; j < count2; j++ )
@@ -696,7 +696,7 @@ void HOGCache::init(const HOGDescriptor* _descriptor,
         pixData[j + count1 + count2] = pixData[j + rawBlockSize*2];
     count2 += count1;
     count4 += count2;
-    
+
     // initialize blockData
     for( j = 0; j < nblocks.width; j++ )
         for( i = 0; i < nblocks.height; i++ )
@@ -744,9 +744,9 @@ const float* HOGCache::getBlock(Point pt, float* buf)
 
 //    CV_Assert( blockHist != 0 );
     memset(blockHist, 0, sizeof(float) * blockHistogramSize);
-    
+
     const PixData* _pixData = &pixData[0];
-    
+
     for( k = 0; k < C1; k++ )
     {
         const PixData& pk = _pixData[k];
@@ -754,7 +754,7 @@ const float* HOGCache::getBlock(Point pt, float* buf)
         float w = pk.gradWeight*pk.histWeights[0];
         const uchar* h = qanglePtr + pk.qangleOfs;
         int h0 = h[0], h1 = h[1];
-        
+
         float* hist = blockHist + pk.histOfs[0];
         float t0 = hist[h0] + a[0]*w;
         float t1 = hist[h1] + a[1]*w;
@@ -769,19 +769,19 @@ const float* HOGCache::getBlock(Point pt, float* buf)
         const float* const a = gradPtr + pk.gradOfs;
         const uchar* const h = qanglePtr + pk.qangleOfs;
         int h0 = h[0], h1 = h[1];
-        
+
         __m128 _a0 = _mm_set1_ps(a[0]), _a1 = _mm_set1_ps(a[1]);
         __m128 _w = _mm_mul_ps(_mm_set1_ps(pk.gradWeight), _mm_loadu_ps(pk.histWeights));
         __m128 _t0 = _mm_mul_ps(_a0, _w), _t1 = _mm_mul_ps(_a1, _w);
-        
+
         _mm_storeu_ps(hist0, _t0);
         _mm_storeu_ps(hist1, _t1);
-        
+
         float* hist = blockHist + pk.histOfs[0];
         float t0 = hist[h0] + hist0[0];
         float t1 = hist[h1] + hist1[0];
         hist[h0] = t0; hist[h1] = t1;
-        
+
         hist = blockHist + pk.histOfs[1];
         t0 = hist[h0] + hist0[1];
         t1 = hist[h1] + hist1[1];
@@ -795,13 +795,13 @@ const float* HOGCache::getBlock(Point pt, float* buf)
         float w, t0, t1, a0 = a[0], a1 = a[1];
         const uchar* const h = qanglePtr + pk.qangleOfs;
         int h0 = h[0], h1 = h[1];
-        
+
         float* hist = blockHist + pk.histOfs[0];
         w = pk.gradWeight*pk.histWeights[0];
         t0 = hist[h0] + a0*w;
         t1 = hist[h1] + a1*w;
         hist[h0] = t0; hist[h1] = t1;
-        
+
         hist = blockHist + pk.histOfs[1];
         w = pk.gradWeight*pk.histWeights[1];
         t0 = hist[h0] + a0*w;
@@ -809,7 +809,7 @@ const float* HOGCache::getBlock(Point pt, float* buf)
         hist[h0] = t0; hist[h1] = t1;
     }
 #endif
-    
+
 #if CV_SSE2
     for( ; k < C4; k++ )
     {
@@ -817,34 +817,34 @@ const float* HOGCache::getBlock(Point pt, float* buf)
         const float* const a = gradPtr + pk.gradOfs;
         const uchar* const h = qanglePtr + pk.qangleOfs;
         int h0 = h[0], h1 = h[1];
-        
+
         __m128 _a0 = _mm_set1_ps(a[0]), _a1 = _mm_set1_ps(a[1]);
 		__m128 _w = _mm_mul_ps(_mm_set1_ps(pk.gradWeight), _mm_loadu_ps(pk.histWeights));
         __m128 _t0 = _mm_mul_ps(_a0, _w), _t1 = _mm_mul_ps(_a1, _w);
-        
+
         _mm_storeu_ps(hist0, _t0);
         _mm_storeu_ps(hist1, _t1);
-        
+
         float* hist = blockHist + pk.histOfs[0];
         float t0 = hist[h0] + hist0[0];
         float t1 = hist[h1] + hist1[0];
         hist[h0] = t0; hist[h1] = t1;
-        
+
         hist = blockHist + pk.histOfs[1];
         t0 = hist[h0] + hist0[1];
         t1 = hist[h1] + hist1[1];
         hist[h0] = t0; hist[h1] = t1;
-        
+
         hist = blockHist + pk.histOfs[2];
         t0 = hist[h0] + hist0[2];
         t1 = hist[h1] + hist1[2];
         hist[h0] = t0; hist[h1] = t1;
-        
+
         hist = blockHist + pk.histOfs[3];
         t0 = hist[h0] + hist0[3];
         t1 = hist[h1] + hist1[3];
         hist[h0] = t0; hist[h1] = t1;
-        
+
 //        __m128 _hist0 = _mm_set_ps((blockHist + pk.histOfs[3])[h0], (blockHist + pk.histOfs[2])[h0],
 //            (blockHist + pk.histOfs[1])[h0], (blockHist + pk.histOfs[0])[h0]);
 //        __m128 _hist1 = _mm_set_ps((blockHist + pk.histOfs[3])[h1], (blockHist + pk.histOfs[2])[h1],
@@ -860,7 +860,7 @@ const float* HOGCache::getBlock(Point pt, float* buf)
 //        (pk.histOfs[1] + blockHist)[h0] = hist0[1];
 //        (pk.histOfs[2] + blockHist)[h0] = hist0[2];
 //        (pk.histOfs[3] + blockHist)[h0] = hist0[3];
-//        
+//
 //        (pk.histOfs[0] + blockHist)[h1] = hist1[0];
 //        (pk.histOfs[1] + blockHist)[h1] = hist1[1];
 //        (pk.histOfs[2] + blockHist)[h1] = hist1[2];
@@ -874,25 +874,25 @@ const float* HOGCache::getBlock(Point pt, float* buf)
         float w, t0, t1, a0 = a[0], a1 = a[1];
         const uchar* h = qanglePtr + pk.qangleOfs;
         int h0 = h[0], h1 = h[1];
-        
+
         float* hist = blockHist + pk.histOfs[0];
         w = pk.gradWeight*pk.histWeights[0];
         t0 = hist[h0] + a0*w;
         t1 = hist[h1] + a1*w;
         hist[h0] = t0; hist[h1] = t1;
-        
+
         hist = blockHist + pk.histOfs[1];
         w = pk.gradWeight*pk.histWeights[1];
         t0 = hist[h0] + a0*w;
         t1 = hist[h1] + a1*w;
         hist[h0] = t0; hist[h1] = t1;
-        
+
         hist = blockHist + pk.histOfs[2];
         w = pk.gradWeight*pk.histWeights[2];
         t0 = hist[h0] + a0*w;
         t1 = hist[h1] + a1*w;
         hist[h0] = t0; hist[h1] = t1;
-        
+
         hist = blockHist + pk.histOfs[3];
         w = pk.gradWeight*pk.histWeights[3];
         t0 = hist[h0] + a0*w;
@@ -1015,6 +1015,19 @@ Rect HOGCache::getWindow(const Size& imageSize, const Size& winStride, int idx)
     return Rect( x*winStride.width, y*winStride.height, winSize.width, winSize.height );
 }
 
+static inline int gcd(int a, int b)
+{
+    if( a < b )
+        std::swap(a, b);
+    while( b > 0 )
+    {
+        int r = a % b;
+        a = b;
+        b = r;
+    }
+    return a;
+}
+
 void HOGDescriptor::compute(const Mat& img, std::vector<float>& descriptors,
     Size winStride, Size padding, const std::vector<Point>& locations) const
 {

modules/objdetect/test/test_cascadeandhog.cpp

@@ -995,6 +995,8 @@ inline bool HOGDescriptorTester::is_failed() const
     return failed;
 }
 
+static inline int gcd(int a, int b) { return (a % b == 0) ? b : gcd (b, a % b); }
+
 void HOGDescriptorTester::detect(const Mat& img,
     vector<Point>& hits, vector<double>& weights, double hitThreshold,
     Size winStride, Size padding, const vector<Point>& locations) const