CTAN update: bnumexpr

CTAN Announcements ctan-ann at ctan.org
Tue May 18 09:23:43 CEST 2021

Jean-François Burnol submitted an update to the



Version number: 1.5 2021-05-17
License type: lppl1.3c

Summary description: Extends eTeX’s \numexpr...\relax construct to big 

Announcement text:

- breaking: power operators ^ and ** now right-associative.

- bugfixes: two bugs related to hexadecimal input and
  inherited from usptream xintexpr were fixed.

- customizability and extendibility now total: added \bnumdefinfix and
  \bnumdefpostfix to extend or modify the existing syntax.

Already with \bnumsetup (new name of \bnumexprsetup) it was possible, as
is now done in the documentation, to let \bnumeval become for example a
calculator operating on fractions.

With the added \bnumdefinfix and \bnumdefpostfix it is possible to
redefine or extend arbitrarily the implemented syntax.  For example to
add support for numbers in scientific notation via new infix operators
`.' and `e' or `E'.  Of course, it would then also be needed to map via
\bnumsetup the arithmetic operations to suitable macros.


This package is located at 

More information is at


   Thanks for the upload.

     For the CTAN Team
    Erik Braun


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