System information (version)

• OpenCV => 3.3.0
• Operating System / Platform => Windows 64 Bit
• Compiler => Visual Studio 2015

Detailed description

Mat m1(1, 1, CV_32FC1);
m1.at<float>(0) = 1.f;

const float a = 0.1f;

cout << (Mat)(m1.mul((a / m1))) << endl;
cout << (Mat)(m1.mul((Mat)(a / m1))) << endl;

Both expressions m1.mul((a / m1)) and m1.mul((Mat)(a / m1)) are expected to give the same result (0.1), but only the second one works. the first gives 10.

Steps to reproduce