calc - 2.15.0.4-1+b2 main

Calc is an arbitrary precision arithmetic system that uses a C-like
language. Calc is useful as a calculator, an algorithm prototyper and as a
mathematical research tool. More importantly, calc provides one with a
machine independent means of computation. Calc comes with a rich set of
builtin mathematical and programmatic functions.
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Calc is built on top of the library libcalc that represents numeric values
as fractions reduced to their lowest terms. This library can also be used
to add arbitrary precision capabilities to your own programs and is
available in the Debian package `calc-dev'.