# polexpr – A parser for polynomial expressions

The package provides a parser `\poldef` of algebraic polynomial
expressions. As it is based on xintexpr,
the coefficients are allowed to be arbitrary rational numbers.

Once defined, a polynomial is usable by its name either as a numerical
function in `\xintexpr`/`\xinteval`, or for additional
polynomial definitions, or as argument to the package macros.
The localization of real roots to arbitrary precision as well as the
determination of all rational roots is implemented via such macros.

Since release 0.8, polexpr extends the xintexpr
syntax to recognize polynomials as a new variable type (and not only as functions).
Functionality which previously was implemented via macros such as the
computation of a greatest common divisor is now available directly in
`\xintexpr`, `\xinteval` or `\poldef`
via infix or functional syntax.

Sources | `/macros/generic/polexpr` |

Documentation | |

Version | 0.8.7a 2022-05-19 |

Licenses | The LaTeX Project Public License 1.3c |

Copyright | 2018–2022 Jean-François Burnol |

Maintainer | Jean-François Burnol |

Contained in | TeX Live as polexpr MiKTeX as polexpr |

Topics | Calculation Arithmetic Generic Macros e-TeX Maths |

See also | polynom |

Download the contents of this package in one zip archive (199.9k).

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