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Diffstat (limited to 'testsuite/tests/simplCore/should_run/simplrun007.hs')
| -rw-r--r-- | testsuite/tests/simplCore/should_run/simplrun007.hs | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/testsuite/tests/simplCore/should_run/simplrun007.hs b/testsuite/tests/simplCore/should_run/simplrun007.hs new file mode 100644 index 0000000000..12bfb2d335 --- /dev/null +++ b/testsuite/tests/simplCore/should_run/simplrun007.hs @@ -0,0 +1,27 @@ +{-# LANGUAGE MagicHash #-} + +-- Actually, this exercises prelude/PrelRules, but this is the closest +-- place I could find to put it... + +import GHC.Exts +import Numeric +import Data.Bits + +main = do phex (I# (uncheckedIShiftL# (negateInt# 5#) 2#)) + phex (I# (uncheckedIShiftRA# (negateInt# 5#) 1#)) + phex (I# (uncheckedIShiftRL# (negateInt# 5#) 1#)) + phex (W# (uncheckedShiftL# (int2Word# (negateInt# 5#)) 2#)) + phex (W# (uncheckedShiftRL# (int2Word# (negateInt# 5#)) 1#)) + +phex x = putStrLn (showSigned (\x -> ("0x"++) . showHex x) 0 x "") + +{- Too wordsize-dependant +phex x = putStrLn (hex x) +hex x = "0x" ++ [onedigit (fromIntegral ((x `shiftR` (i*4)) .&. 0xF)) + | i <- [digits-1,digits-2..0]] + where + digits = bitSize x `div` 4 + onedigit n = "0123456789abcdef" !! n +-} + + |