X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=GHC%2FInt.hs;h=9f53937cc7ce9effc51bf6b7426f364e5c20fce5;hb=487b9d4571a847ee0273b4627aaa135c46a51b8d;hp=b5e4b73048815e28c55be85ee0a99ed8dadf72bb;hpb=10de2c656f74562b662c22928be85e1b3ccda796;p=ghc-base.git diff --git a/GHC/Int.hs b/GHC/Int.hs index b5e4b73..9f53937 100644 --- a/GHC/Int.hs +++ b/GHC/Int.hs @@ -37,6 +37,7 @@ import GHC.Num import GHC.Real import GHC.Read import GHC.Arr +import GHC.Err import GHC.Word hiding (uncheckedShiftL64#, uncheckedShiftRL64#) import GHC.Show @@ -117,9 +118,9 @@ instance Bounded Int8 where maxBound = 0x7F instance Ix Int8 where - range (m,n) = [m..n] - unsafeIndex b@(m,_) i = fromIntegral i - fromIntegral m - inRange (m,n) i = m <= i && i <= n + range (m,n) = [m..n] + unsafeIndex (m,_) i = fromIntegral i - fromIntegral m + inRange (m,n) i = m <= i && i <= n instance Read Int8 where readsPrec p s = [(fromIntegral (x::Int), r) | (x, r) <- readsPrec p s] @@ -141,8 +142,8 @@ instance Bits Int8 where = I8# (narrow8Int# (word2Int# ((x'# `uncheckedShiftL#` i'#) `or#` (x'# `uncheckedShiftRL#` (8# -# i'#))))) where - x'# = narrow8Word# (int2Word# x#) - i'# = word2Int# (int2Word# i# `and#` int2Word# 7#) + !x'# = narrow8Word# (int2Word# x#) + !i'# = word2Int# (int2Word# i# `and#` int2Word# 7#) bitSize _ = 8 isSigned _ = True @@ -229,9 +230,9 @@ instance Bounded Int16 where maxBound = 0x7FFF instance Ix Int16 where - range (m,n) = [m..n] - unsafeIndex b@(m,_) i = fromIntegral i - fromIntegral m - inRange (m,n) i = m <= i && i <= n + range (m,n) = [m..n] + unsafeIndex (m,_) i = fromIntegral i - fromIntegral m + inRange (m,n) i = m <= i && i <= n instance Read Int16 where readsPrec p s = [(fromIntegral (x::Int), r) | (x, r) <- readsPrec p s] @@ -253,11 +254,12 @@ instance Bits Int16 where = I16# (narrow16Int# (word2Int# ((x'# `uncheckedShiftL#` i'#) `or#` (x'# `uncheckedShiftRL#` (16# -# i'#))))) where - x'# = narrow16Word# (int2Word# x#) - i'# = word2Int# (int2Word# i# `and#` int2Word# 15#) + !x'# = narrow16Word# (int2Word# x#) + !i'# = word2Int# (int2Word# i# `and#` int2Word# 15#) bitSize _ = 16 isSigned _ = True + {-# RULES "fromIntegral/Word8->Int16" fromIntegral = \(W8# x#) -> I16# (word2Int# x#) "fromIntegral/Int8->Int16" fromIntegral = \(I8# x#) -> I16# x# @@ -390,6 +392,7 @@ instance Bits Int32 where bitSize _ = 32 isSigned _ = True + {-# RULES "fromIntegral/Int->Int32" fromIntegral = \(I# x#) -> I32# (intToInt32# x#) "fromIntegral/Word->Int32" fromIntegral = \(W# x#) -> I32# (word32ToInt32# (wordToWord32# x#)) @@ -494,8 +497,8 @@ instance Bits Int32 where = I32# (narrow32Int# (word2Int# ((x'# `uncheckedShiftL#` i'#) `or#` (x'# `uncheckedShiftRL#` (32# -# i'#))))) where - x'# = narrow32Word# (int2Word# x#) - i'# = word2Int# (int2Word# i# `and#` int2Word# 31#) + !x'# = narrow32Word# (int2Word# x#) + !i'# = word2Int# (int2Word# i# `and#` int2Word# 31#) bitSize _ = 32 isSigned _ = True @@ -519,9 +522,9 @@ instance Bounded Int32 where maxBound = 0x7FFFFFFF instance Ix Int32 where - range (m,n) = [m..n] - unsafeIndex b@(m,_) i = fromIntegral i - fromIntegral m - inRange (m,n) i = m <= i && i <= n + range (m,n) = [m..n] + unsafeIndex (m,_) i = fromIntegral i - fromIntegral m + inRange (m,n) i = m <= i && i <= n ------------------------------------------------------------------------ -- type Int64 @@ -617,7 +620,7 @@ x# `modInt64#` y# = if r# `neInt64#` intToInt64# 0# then r# `plusInt64#` y# else intToInt64# 0# | otherwise = r# where - r# = x# `remInt64#` y# + !r# = x# `remInt64#` y# instance Read Int64 where readsPrec p s = [(fromInteger x, r) | (x, r) <- readsPrec p s] @@ -639,12 +642,11 @@ instance Bits Int64 where = I64# (word64ToInt64# ((x'# `uncheckedShiftL64#` i'#) `or64#` (x'# `uncheckedShiftRL64#` (64# -# i'#)))) where - x'# = int64ToWord64# x# - i'# = word2Int# (int2Word# i# `and#` int2Word# 63#) + !x'# = int64ToWord64# x# + !i'# = word2Int# (int2Word# i# `and#` int2Word# 63#) bitSize _ = 64 isSigned _ = True - -- give the 64-bit shift operations the same treatment as the 32-bit -- ones (see GHC.Base), namely we wrap them in tests to catch the -- cases when we're shifting more than 64 bits to avoid unspecified @@ -753,8 +755,8 @@ instance Bits Int64 where = I64# (word2Int# ((x'# `uncheckedShiftL#` i'#) `or#` (x'# `uncheckedShiftRL#` (64# -# i'#)))) where - x'# = int2Word# x# - i'# = word2Int# (int2Word# i# `and#` int2Word# 63#) + !x'# = int2Word# x# + !i'# = word2Int# (int2Word# i# `and#` int2Word# 63#) bitSize _ = 64 isSigned _ = True @@ -763,7 +765,10 @@ instance Bits Int64 where "fromIntegral/Int64->a" fromIntegral = \(I64# x#) -> fromIntegral (I# x#) #-} +uncheckedIShiftL64# :: Int# -> Int# -> Int# uncheckedIShiftL64# = uncheckedIShiftL# + +uncheckedIShiftRA64# :: Int# -> Int# -> Int# uncheckedIShiftRA64# = uncheckedIShiftRA# #endif @@ -775,6 +780,6 @@ instance Bounded Int64 where maxBound = 0x7FFFFFFFFFFFFFFF instance Ix Int64 where - range (m,n) = [m..n] - unsafeIndex b@(m,_) i = fromIntegral i - fromIntegral m - inRange (m,n) i = m <= i && i <= n + range (m,n) = [m..n] + unsafeIndex (m,_) i = fromIntegral i - fromIntegral m + inRange (m,n) i = m <= i && i <= n