{-
	Copyright (C) 2018 Dr. Alistair Ward

	This file is part of WeekDaze.

	WeekDaze 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.

	WeekDaze 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 WeekDaze.  If not, see <http://www.gnu.org/licenses/>.
-}
{- |
 [@AUTHOR@]	Dr. Alistair Ward

 [@DESCRIPTION@]
-}

module BishBosh.Data.Num (
-- * Functions
	inClosedUnitInterval
) where

import	Control.Arrow((&&&))

-- | Whether the specified number lies within the closed unit-interval, @[0,1]@; <https://en.wikipedia.org/wiki/Unit_interval>.
inClosedUnitInterval :: (Num n, Ord n) => n -> Bool
inClosedUnitInterval :: n -> Bool
inClosedUnitInterval	= (Bool -> Bool -> Bool) -> (Bool, Bool) -> Bool
forall a b c. (a -> b -> c) -> (a, b) -> c
uncurry Bool -> Bool -> Bool
(&&) ((Bool, Bool) -> Bool) -> (n -> (Bool, Bool)) -> n -> Bool
forall b c a. (b -> c) -> (a -> b) -> a -> c
. ((n -> n -> Bool
forall a. Ord a => a -> a -> Bool
>= n
0) (n -> Bool) -> (n -> Bool) -> n -> (Bool, Bool)
forall (a :: * -> * -> *) b c c'.
Arrow a =>
a b c -> a b c' -> a b (c, c')
&&& (n -> n -> Bool
forall a. Ord a => a -> a -> Bool
<= n
1))