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+The bnumexpr package
+Version: 2014/09/21, v1.1
+Info: Expressions with big integers
+
+Copyright (C) 2014 by Jean-Francois Burnol <jfbu at free dot fr>
+
+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".
+
+This 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
+
+Usage
+=====
+
+\usepackage{bnumexpr}
+
+Then \thebnumexpr <expression with +,-,*,/,(,)> \relax is like
+ \the\numexpr <expression with +,-,*,/,(,)> \relax
+with the difference of accepting or producing arbitrarily big
+integers.
+
+Example:
+ \thebnumexpr 30*(21-43*(512-67*(6133-812*2897)))\relax
+outputs:
+ -202785405180
+which would create an arithmetic overflow in \numexpr.
+
+\bnumexpr...\relax is a scaled down version of \xintiiexpr...\relax
+from package xintexpr.
+
+By default, bnumexpr.sty loads xint.sty for its arithmetic macros
+doing addition, subtraction, multiplication, division.
+
+With option custom, xint.sty is not loaded and it is up to the user
+to define \bnumexprAdd, \bnumexprSub, \bnumexprMul, \bnumexprDiv
+
+Option bigintcalc maps them to the macros from package bigintcalc.
+
+Option allowpower enables ^ as power operator.
+
+Installation
+============
+
+obtain bnumexpr.dtx, bnumexpr.ins and the README from CTAN:
+ http://www.ctan.org/pkg/bnumexpr
+
+- "tex bnumexpr.ins" generates the style file
+(pre-existing file in the same repertory will be overwritten).
+
+- without bnumexpr.ins: "tex or latex or pdflatex or xelatex bnumexpr.dtx"
+will also generate the style files (and bnumexpr.ins).
+
+bnumexpr.tex is also extracted, use it for 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 or xelatex.
+
+- with pdflatex or xelatex: run it directly thrice on bnumexpr.dtx, or run
+it on bnumexpr.tex after having edited the suitable toggle therein.
+
+Finishing the installation: (on first installation the destination
+repertories may need to be created)
+
+ 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/
+