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author | David Terei <davidterei@gmail.com> | 2011-07-20 11:09:03 -0700 |
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committer | David Terei <davidterei@gmail.com> | 2011-07-20 11:26:35 -0700 |
commit | 16514f272fb42af6e9c7674a9bd6c9dce369231f (patch) | |
tree | e4f332b45fe65e2a7a2451be5674f887b42bf199 /testsuite/tests/lib/Numeric/num009.hs | |
parent | ebd422aed41048476aa61dd4c520d43becd78682 (diff) | |
download | haskell-16514f272fb42af6e9c7674a9bd6c9dce369231f.tar.gz |
Move tests from tests/ghc-regress/* to just tests/*
Diffstat (limited to 'testsuite/tests/lib/Numeric/num009.hs')
-rw-r--r-- | testsuite/tests/lib/Numeric/num009.hs | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/testsuite/tests/lib/Numeric/num009.hs b/testsuite/tests/lib/Numeric/num009.hs new file mode 100644 index 0000000000..6910f2f840 --- /dev/null +++ b/testsuite/tests/lib/Numeric/num009.hs @@ -0,0 +1,39 @@ +-- trac #2059 + +{-# LANGUAGE ForeignFunctionInterface #-} + +module Main(main) where + +import Control.Monad +import Foreign.C + +main = do let d = 1e20 :: Double + f = 1e20 :: Float + test "sind" sind sin d + test "sinf" sinf sin f + test "cosd" cosd cos d + test "cosf" cosf cos f + test "tand" tand tan d + test "tanf" tanf tan f + putStrLn "Done" + +test :: (RealFloat a, Floating a, RealFloat b, Floating b) + => String -> (a -> a) -> (b -> b) -> b -> IO () +test s f g x = do let y = realToFrac (f (realToFrac x)) + z = g x + unless (y == z) $ do + putStrLn s + print y + print z + print $ decodeFloat y + print $ decodeFloat z + +foreign import ccall "math.h sin" sind :: CDouble -> CDouble +foreign import ccall "math.h sinf" sinf :: CFloat -> CFloat + +foreign import ccall "math.h cos" cosd :: CDouble -> CDouble +foreign import ccall "math.h cosf" cosf :: CFloat -> CFloat + +foreign import ccall "math.h tan" tand :: CDouble -> CDouble +foreign import ccall "math.h tanf" tanf :: CFloat -> CFloat + |