“…-the principal matrix logarithm, available in SciPy as scipy.linalg.logm, computed using inverse scaling and squaring [3]; -the matrix sine, scipy.linalg.sinm, computed using the Schur-Parlett algorithm [8]; -the matrix cosine, scipy.linalg.cosm, also computed using the SchurParlett algorithm; -the matrix square root, scipy.linalg.sqrtm, computed using a blocked version of the Björck-Hammarling algorithm [5], [12]; -the matrix cube root, scipy.linalg.fractional matrix power, computed using the Schur-Padé algorithm [21].…”