matrix-unwind contains functions for computing the scalar unwinding number
and the matrix unwinding function, based on the paper
Mary Aprahamian and Nicholas J. Higham, "[The matrix unwinding function, with an application to computing the matrix exponential]", SIAM J. Matrix Anal. Appl. 35 (1): 88--109, 2014.
The main functions are
*unwind: scalar unwinding number.
*unwindm: matrix unwinding function.
See license.txt for licensing information.