{-
Copyright (C) 2011 Dr. Alistair Ward
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see .
-}
{- |
[@AUTHOR@] Dr. Alistair Ward
[@DESCRIPTION@]
* Whilst this particular function is the subject of many introductory examples to Haskell,
the simple algorithms appropriate for that forum, leave a large margin for performance-improvement.
This module provides the interface for alternative algorithms.
* .
-}
module Factory.Math.Factorial(
-- * Type-classes
Algorithmic(..)
) where
-- | Defines the methods expected of a /factorial/-algorithm.
class Algorithmic algorithm where
factorial :: (Integral i, Show i) => algorithm -> i -> i