New Post: Sign(M) - No function available?

Hi all,

I have a matrix M defined (for example) as

Matrix M = new DenseMatrix(3)

A whole bunch of computation happens with regards to rotation matrices and in the end my M is a full matrix.

I now need to find the sign of the matrix M, so

double signScalarValue = Sign(M)

I'm unable to find any functions that do this, and have no idea how to implement this myself, despite looking around for ages.

Could anyone help with this?

Thank you!