non-negative

Non-negative numbers http://code.haskell.org/~thielema/non-negative/

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LicenseRef-GPL licensed and maintained by Henning Thielemann

Provides a class for non-negative numbers, a wrapper which can turn any ordered numeric type into a member of that class, and a lazy number type for non-negative numbers (a generalization of Peano numbers). This library is used by the event-list package.