From c674d3cf49fb3df15f518a64dd783a583cd8d791 Mon Sep 17 00:00:00 2001
From: Ilya Lavrenov <ilya.lavrenov@itseez.com>
Date: Wed, 30 Oct 2013 16:48:12 +0400
Subject: [PATCH] fixed ocl::norm (with NORM_RELATIVE specified) when
 norm(src2) == 0

---
 modules/ocl/src/arithm.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/modules/ocl/src/arithm.cpp b/modules/ocl/src/arithm.cpp
index ea2eff63fc..9b24b16b0b 100644
--- a/modules/ocl/src/arithm.cpp
+++ b/modules/ocl/src/arithm.cpp
@@ -688,7 +688,7 @@ double cv::ocl::norm(const oclMat &src1, const oclMat &src2, int normType)
         break;
     }
     if (isRelative)
-        r = r / norm(src2, normType);
+        r = r / (norm(src2, normType) + DBL_EPSILON);
 
     return r;
 }