From ccdc71286ca2224a596ac5c5cb350d61d59b7686 Mon Sep 17 00:00:00 2001
From: Ilya Lavrenov <ilya.lavrenov@itseez.com>
Date: Sun, 12 Oct 2014 04:54:27 -0700
Subject: [PATCH] cv::polarToCart

---
 modules/core/src/mathfuncs.cpp | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/modules/core/src/mathfuncs.cpp b/modules/core/src/mathfuncs.cpp
index 50212e3234..d21ff0e9b5 100644
--- a/modules/core/src/mathfuncs.cpp
+++ b/modules/core/src/mathfuncs.cpp
@@ -892,11 +892,24 @@ void polarToCart( InputArray src1, InputArray src2,
 
                 SinCos_32f( angle, y, x, len, angleInDegrees );
                 if( mag )
-                    for( k = 0; k < len; k++ )
+                {
+                    k = 0;
+
+                    #if CV_NEON
+                    for( ; k <= len - 4; k += 4 )
+                    {
+                        float32x4_t v_m = vld1q_f32(mag + k);
+                        vst1q_f32(x + k, vmulq_f32(vld1q_f32(x + k), v_m));
+                        vst1q_f32(y + k, vmulq_f32(vld1q_f32(y + k), v_m));
+                    }
+                    #endif
+
+                    for( ; k < len; k++ )
                     {
                         float m = mag[k];
                         x[k] *= m; y[k] *= m;
                     }
+                }
             }
             else
             {