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-- This module describes utility functions.
module Utils where
import Data.Bits
-------------------------------------------------------------------------------
-- Bitwork
toBit :: Bool -> Int
toBit True = 1
toBit False = 0
toBits :: Bits a => a -> [Int] -> [Int]
toBits x r = map (toBit . testBit x) r
fromBits :: [Int] -> Int
fromBits = foldl (\a b -> 2 * a + b) 0 . reverse
extractBits :: Bits a => a -> [Int] -> Int
extractBits x r = fromBits $ toBits x r
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