How can I convert matrix<double> to Matrix<float>?

Question

I want to calculate something like: Matrix<float> * Matrix<double>

the Matrix<float> has about 6M*3 elements , how can I convert the Matrix<double> to Matrix<float> so that I can get a Matrix<float> result.

Answer 1

You can convert your double matrix argument to a float matrix using the Map function:

Matrix<double> m1 = Matrix<double>.Build.Random(6000000,3);
Matrix<float> m2 = m1.Map(x => (float)x);

Or alternatively

Matrix<float> m2 = m1.Map(Convert.ToSingle);