/****Copyright (c) 1997-2020 All rights reserved
 ****    C. J. Siniolakis
 ****    A. V. Gerbessiotis 
 **** Permission to use, copy, modify, and distribute this 
 **** software, and to incorporate it, in whole or in part, 
 **** into other software,is hereby granted without fee, 
 **** provided that
 ****  (1) the above copyright notice and this permission
 ****      notice appear in all copies of the source code, 
 ****      and the above copyright notice appear in clearly 
 ****      visible form on all supporting documentation and 
 ****      distribution media, and
 ****     (2) any redistribution of the software, in original
 ****         or modified form, be without fee and subject to
 ****         these same conditions.
 ****   No guarantee, whatsoever, is offered that the code 
 ****   works as advertised or is absent of any, even 
 ****   damaging, side-effects. 
 ****  Use this code at your own personal risk.
 ****/
