calcNormDiff      544 modules/cudaarithm/include/opencv2/cudaarithm.hpp CV_EXPORTS void calcNormDiff(InputArray src1, InputArray src2, OutputArray dst, int normType=NORM_L2, Stream& stream = Stream::Null());
calcNormDiff      157 modules/cudaarithm/test/test_reductions.cpp     cv::cuda::calcNormDiff(loadMat(src1, useRoi), loadMat(src2, useRoi), dst, normCode, stream);