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Package polexpr README
======================

License
-------

Copyright (C) 2018 Jean-François Burnol

See documentation of package [xint](http://www.ctan.org/pkg/xint) for
contact information.

This Work may be distributed and/or modified under the conditions of the
LaTeX Project Public License version 1.3c. This version of this license
is in

> <http://www.latex-project.org/lppl/lppl-1-3c.txt>

and version 1.3 or later is part of all distributions of LaTeX version
2005/12/01 or later.

This Work has the LPPL maintenance status author-maintained.

The Author of this Work is Jean-François Burnol.

This Work consists of the package file polexpr.sty, this README.md and the
documentation file polexpr.txt.

Abstract
--------

The package provides `\poldef`. This a parser of polynomial expressions
based upon the `\xintdeffunc` mechanism of xintexpr.

The parsed expressions use the operations of algebra (inclusive of
composition of functions) with standard operators, fractional numbers
(possibly in scientific notation) and previously defined polynomial
functions or other constructs as recognized by the `\xintexpr` numerical
parser.

The polynomials are then not only genuine `\xintexpr` numerical
functions but additionally are also known to the package via their
coefficients. This allows dedicated macros to implement polynomial
algorithmics.

CHANGE LOG
----------

- v0.1 (2018/01/11): initial release. Features:
  - The `\poldef` parser itself,
  - Differentiation and anti-differentiation,
  - Euclidean division and GCDs,
  - Various utilities such as `\PolFromCSV`, `\PolMapCoeffs`,
      `\PolToCSV`, `\PolToExpr`, ...
  Only one-variable polynomials so far.

- v0.2 (2018/01/14)
  - Fix: `"README thinks \numexpr recognizes ^ operator"`.
  - Convert README to reStructuredText markup.
  - Move main documentation from README to separate `polexpr.txt`
      file.
  - Provide `polexpr.html` as obtained via
      [DocUtils](http://docutils.sourceforge.net/docs/index.html)
      `rst2html.py`.
  - Convert README to (CTAN compatible) Markdown markup.
  Due to lack of available time the test suite might not be extensive
  enough. Bug reports are very welcome!