This directory contains tests for a modernized and improved Fortran implementation of Powell's
derivative-free optimization solvers.

N.B.: The scripts in this directory are written for testing and developing purposes. They do NOT
intend to illustrate the usage of the package. For such illustrations, see the "examples" directory.

Coded by Zaikun ZHANG (www.zhangzk.net).

Dedicated to late Professor M. J. D. Powell FRS (1936--2015).

Started in October 2021.
