diff --git a/ghc/lib/ghc/PrelBase.lhs b/ghc/lib/ghc/PrelBase.lhs index 87fd4d0462443c5b99aa4c3f68c2a8e8a193acab..891d45c964bb212874f26ea9ec8d66eabdc8d907 100644 --- a/ghc/lib/ghc/PrelBase.lhs +++ b/ghc/lib/ghc/PrelBase.lhs @@ -345,10 +345,6 @@ instance Enum () where enumFromTo () () = [()] enumFromThenTo () () () = [()] -instance Bounded () where - minBound = () - maxBound = () - instance Show () where showsPrec p () = showString "()" showList ls = showList__ (showsPrec 0) ls @@ -399,10 +395,6 @@ efttCh now step done go now | done now = [] | otherwise = C# (chr# now) : go (now +# step) -instance Bounded Char where - minBound = '\0' - maxBound = '\255' - instance Show Char where showsPrec p '\'' = showString "'\\''" showsPrec p c = showChar '\'' . showLitChar c . showChar '\'' @@ -532,10 +524,6 @@ eftInt now step go now = I# now : go (now +# step) -instance Bounded Int where - minBound = -2147483647 -- ********************** - maxBound = 2147483647 -- ********************** - instance Num Int where (+) x y = plusInt x y (-) x y = minusInt x y diff --git a/ghc/lib/ghc/PrelBounded.lhs b/ghc/lib/ghc/PrelBounded.lhs new file mode 100644 index 0000000000000000000000000000000000000000..240f27781ecd2984eb941847c52f1a275afd4701 --- /dev/null +++ b/ghc/lib/ghc/PrelBounded.lhs @@ -0,0 +1,28 @@ +% +% (c) The GRASP/AQUA Project, Glasgow University, 1992-1996 +% +\section[PrelBounded]{Module @PrelBounded@} + +Instances of Bounded for various datatypes. + +\begin{code} +{-# OPTIONS -fno-implicit-prelude #-} + +module PrelBounded where + +import PrelBase +import CCall -- for the dependency analyser, + -- due to the use of litlits below. + +instance Bounded () where + minBound = () + maxBound = () + +instance Bounded Char where + minBound = '\0' + maxBound = '\255' + +instance Bounded Int where + minBound = ``-2147483648'' -- GHC <= 2.09 had this at -2147483647 + maxBound = 2147483647 +\end{code} diff --git a/ghc/lib/required/Prelude.lhs b/ghc/lib/required/Prelude.lhs index 92d173f321213f532b17b267dd0b621df764dffd..7f0dcc1861d487fb238a1a285e7577acc4ebf745 100644 --- a/ghc/lib/required/Prelude.lhs +++ b/ghc/lib/required/Prelude.lhs @@ -69,6 +69,7 @@ import PrelNum import PrelTup import PrelMaybe import PrelEither +import PrelBounded import Monad import Maybe import Error ( error )