### Describe the feature you would like to be implemented. Currently in eigen 3.4.0 Array supports only +, -, *, and / by scalar, but no %: ```cpp auto m = Eigen::ArrayXXi(1, 5); m << 1, 2, 3, 4, 5; std::cout << m / 2 << '\n'; // 0 1 1 2 2 std::cout << m * 2 << '\n'; // 2 4 6 8 10 std::cout << m % 2 << '\n'; // error ``` Numpy for example do have modulus: ```python >>> a = numpy.array([1,2,3,4,5,10,15], dtype=int) >>> a array([ 1, 2, 3, 4, 5, 10, 15]) >>> a % 2 array([1, 0, 1, 0, 1, 0, 1]) ``` For now I'm using a workaround with ranges: `std::ranges::for_each(m, [](auto &x) { x %= 2; })`. Are there any plans to add a modulus operator? ### Would such a feature be useful for other users? Why? It would be useful for matrix arithmetic in a finite filed Z/2. I also noticed Array<bool> has a xor operator with another Array, but not with a scalar bool. Any other Array's arithmetic operation has version with scalars.