Petr Olšák submitted the
apnum
package.
Version number: 1.0 <Nov. 2014> License type: pd
Summary description: Arbitrary precision numbers implemented by TeX macros
Announcement text: ----------------------------------------------------------------------
The basic operations (addition, subtraction, multiplication, division, power to an INT) are implemented by TeX macros in this package. Operands can be numbers with arbitrary number of digits (or scientific notation is allowed). The expression scanner is provided too. The exhaustive documentation (including detailed TeXnical documentation) is included. The macro includes many optimizations and uses only TeX primitives (from classic TeX) and ewcount macro.
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This package is located at http://mirror.ctan.org/macros/generic/
More information is at http://www.ctan.org/pkg/apnum
We are supported by the TeX Users Group http://www.tug.org . Please join a users group; see http://www.tug.org/usergroups.html .
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Thanks for the upload.
For the CTAN Team Petra Rübe-Pugliese