Source: bnumexpr.dtx Version: v1.1b, 2014/10/28 (doc: 2014/11/04) Author: Jean-Francois Burnol Info: Expressions with big integers License: LPPL 1.3c or later README: USAGE, INSTALLATION, LICENSE Usage \usepackage{bnumexpr} Then \thebnumexpr \relax is like \the\numexpr \relax with the difference of accepting or producing arbitrarily big integers. For example, \thebnumexpr 2*1234567890\relax outputs 2469135780 which would have created an arithmetic overflow in \numexpr as it exceeds the maximal allowed TeX integer 2147483647. \bnumexpr...\relax is a scaled down version of \xintiiexpr...\relax from package xintexpr.[1] - by default, bnumexpr loads xintcore [2] for its arithmetic macros doing addition, subtraction, multiplication, division (and powers). - option _allowpower_ enables ^ as power operator, for example: \thebnumexpr 2^31\relax % smallest integer exceeding the TeX bound - option _bigintcalc_ loads package bigintcalc [3] and uses its arithmetic macros rather than those from xintcore. - option _l3bigint_ loads package l3bigint [4], from the experimental trunk of the on-going LaTeX3 project. - with option _custom_, no extra package is loaded and it is up to the user to define suitably expandable macros \bnumexprAdd, \bnumexprSub, \bnumexprMul, and \bnumexprDiv doing the basic arithmetic operations. Installation Obtain bnumexpr.dtx (and possibly, bnumexpr.ins and the README) from CTAN: http://www.ctan.org/pkg/bnumexpr Both "tex bnumexpr.ins" and "tex bnumexpr.dtx" extract from bnumexpr.dtx the following files: bnumexpr.sty this is the style file. bnumexprReadme.md reconstitutes this README. bnumexpr.changes lists changes from the initial version. bnumexpr.tex can be used to generate the documentation: - with latex+dvipdfmx: "latex bnumexpr.tex" (thrice) then "dvipdfmx bnumexpr.dvi". Ignore dvipdfmx warnings, but if the pdf file has problems with fonts (possibly from an old dvipdfmx), use then rather pdflatex. - with pdflatex: "pdflatex bnumexpr.tex" (thrice). In both cases files bnumexprReadme.md and bnumexpr.changes must be present in the same repertory. without bnumexpr.tex: "pdflatex bnumexpr.dtx" (thrice) extracts all files and simultaneously generates the pdf documentation. Finishing the installation: bnumexpr.sty --> TDS:tex/latex/bnumexpr/ bnumexpr.dtx --> TDS:source/latex/bnumexpr/ bnumexpr.ins --> TDS:source/latex/bnumexpr/ bnumexpr.pdf --> TDS:doc/latex/bnumexpr/ README --> TDS:doc/latex/bnumexpr/ Files bnumexpr.tex, bnumexpr.changes, bnumexprReadme.md may be discarded. License Copyright (C) 2014 by Jean-Francois Burnol This Work may be distributed and/or modified under the conditions of the LaTeX Project Public License, either version 1.3c of this license or (at your option) any later version. This version of this license is in http://www.latex-project.org/lppl/lppl-1-3c.txt and the latest version of this license is in http://www.latex-project.org/lppl.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 "maintained". The Current Maintainer of this Work is Jean-Francois Burnol. This Work consists of the main source file bnumexpr.dtx and the derived files bnumexpr.sty, bnumexpr.pdf, bnumexpr.ins, bnumexpr.tex, bnumexpr.changes, bnumexprReadme.md [1] http://www.ctan.org/pkg/xint [2] http://www.ctan.org/pkg/xint [3] http://www.ctan.org/pkg/bigintcalc [4] http://latex-project.org/svnroot/experimental/trunk/l3trial/l3bigint, or from https://github.com/latex3/svn-mirror.