MIT License

Copyright (c) 1999-2025 Arash Partow

https://www.partow.net/programming/exprtk/index.html

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
CLAIM, DAMAGES OR OTHER LIABILITY,  WHETHER IN AN ACTION OF  CONTRACT,
TORT OR  OTHERWISE, ARISING  FROM, OUT  OF OR  IN CONNECTION  WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.