Apache Commons Numbers
Copyright 2001-2020 The Apache Software Foundation

This product includes software developed at
The Apache Software Foundation (http://www.apache.org/).

For portions of the Commons Numbers Complex component
The org.apache.commons.numbers.complex package contains derivative
work originating from the "Freely Distributable Math Library".
https://www.netlib.org/fdlibm/
Copyright 1993 Sun Microsystems, Inc.

The org.apache.commons.numbers.complex package contains derivative
work originating from the "Boost C++ Libraries" <boost/math/complex>.
https://www.boost.org/
Copyright 2005 John Maddock 2005.