libghc-numbers-dev - 3000.2.0.2-6+b1 main

It contains instances of the numerical classes for a variety of
different numbers: (computable) real numbers, arbitrary precision fixed
numbers, arbitrary precision floating point numbers, differentiable
numbers, symbolic numbers, natural numbers, interval arithmetic.
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This package provides a library for the Haskell programming language.
See http://www.haskell.org/ for more information on Haskell.