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{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE ScopedTypeVariables #-}
module CO4.Example.Adder
where
import Language.Haskell.TH (runIO)
import qualified Satchmo.Core.SAT.Minisat
import qualified Satchmo.Core.Decode
import CO4
import CO4.Prelude
$( [d| halfAdder :: Bool -> Bool -> (Bool,Bool)
halfAdder a b = (xor2 a b, a && b)
fullAdder :: Bool -> Bool -> Bool -> (Bool,Bool)
fullAdder a b c = case halfAdder a b of
(s1,c1) -> case halfAdder s1 c of
(s2,c2) -> (s2, c1 || c2)
constraint :: Bool -> (Bool,Bool) -> Bool
constraint c (a,b) = not $ snd $ fullAdder a b c
|] >>= compile [ImportPrelude, Cache]
)
result = solveAndTestP True complete encConstraint constraint