trying to fix the custom AVX2 builder test failures (false alarms)

vpisarev · vpisarev · commit d1b8e38e45a7 · 2018-09-06T00:32:56.000+03:00
diff --git a/modules/xfeatures2d/src/surf.cpp b/modules/xfeatures2d/src/surf.cpp
@@ -847,7 +847,7 @@ struct SURFInvoker : ParallelLoopBody
 
             // unit vector is essential for contrast invariance
             vec = descriptors->ptr<float>(k);
-            float scale = (float)(1./(std::sqrt(square_mag) + DBL_EPSILON));
+            float scale = (float)(1./(std::sqrt(square_mag) + FLT_EPSILON));
             for( kk = 0; kk < dsize; kk++ )
                 vec[kk] *= scale;
         }

Original file line number	Diff line number	Diff line change
`@@ -847,7 +847,7 @@ struct SURFInvoker : ParallelLoopBody`
`847`	`847`
`848`	`848`	`// unit vector is essential for contrast invariance`
`849`	`849`	`vec = descriptors->ptr<float>(k);`
`850`		`- float scale = (float)(1./(std::sqrt(square_mag) + DBL_EPSILON));`
	`850`	`+ float scale = (float)(1./(std::sqrt(square_mag) + FLT_EPSILON));`
`851`	`851`	`for( kk = 0; kk < dsize; kk++ )`
`852`	`852`	`vec[kk] *= scale;`
`853`	`853`	`}`