CTAN update: polexpr
New feature: finding all rational roots. For example, the package has no problem determining that the rational roots of 1581755751184441 x^5 -14907697165025339 x^4 +48415668972339336 x^3 -63952057791306264 x^2 +46833913221154895 x -49044360626280925 are 833719/265381 < 165707065/52746197 < 355/113 (and that the remaining factor is simply x^2 + 1). There was also a bugfix or two and some changes, please checkout the html documentation for details (and examples).
This package is located at http://mirror.ctan.org/macros/latex/contrib/polexpr More information is at http://www.ctan.org/pkg/polexpr We are supported by the TeX User Groups. Please join a users group; see http://www.tug.org/usergroups.html .
Thanks for the upload. For the CTAN Team Ina Dau --
polexpr – A parser for polynomial expressions
The package provides \poldef: a parser for polynomial expressions based upon the \xintdeffunc mechanism of the package 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.
|Copyright||2018–2019 Jean-François Burnol|
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