For the included TNC library (files "tnc.h" and "tnc.c")

Copyright (c) 2002-2005, Jean-Sebastien Roy (js@jeannot.org)

Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

This software is a C implementation of TNBC, a truncated newton minimization
package originally developed by Stephen G. Nash in Fortran.
The original source code can be found at :
http://iris.gmu.edu/~snash/nash/software/software.html
Copyright for the original TNBC fortran routines:
  TRUNCATED-NEWTON METHOD:  SUBROUTINES
    WRITTEN BY:  STEPHEN G. NASH
          SCHOOL OF INFORMATION TECHNOLOGY & ENGINEERING
          GEORGE MASON UNIVERSITY
          FAIRFAX, VA 22030
Conversion into C by Elisabeth Nguyen & Jean-Sebastien Roy
Modifications by Jean-Sebastien Roy, 2001-2002
SciPy version derived from TNC 1.3:
$Jeannot: tnc.c,v 1.205 2005/01/28 18:27:31 js Exp $

Modifications by David Cortes for inclusion in poismf library (2020)