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-rw-r--r--lib/Data/Packed/Foreign.hs13
1 files changed, 10 insertions, 3 deletions
diff --git a/lib/Data/Packed/Foreign.hs b/lib/Data/Packed/Foreign.hs
index a94a979..efa51ca 100644
--- a/lib/Data/Packed/Foreign.hs
+++ b/lib/Data/Packed/Foreign.hs
@@ -6,7 +6,12 @@
6-- @ glUniformMatrix4fv 0 1 (fromIntegral gl_TRUE) \`appMatrix\` perspective 0.01 100 (pi\/2) (4\/3) 6-- @ glUniformMatrix4fv 0 1 (fromIntegral gl_TRUE) \`appMatrix\` perspective 0.01 100 (pi\/2) (4\/3)
7-- @ 7-- @
8-- 8--
9module Data.Packed.Foreign where 9module Data.Packed.Foreign
10 ( app
11 , appVector, appVectorLen
12 , appMatrix, appMatrixLen, appMatrixRaw, appMatrixRawLen
13 , unsafeMatrixToVector, unsafeMatrixToForeignPtr
14 ) where
10import Data.Packed.Internal 15import Data.Packed.Internal
11import qualified Data.Vector.Storable as S 16import qualified Data.Vector.Storable as S
12import Foreign (Ptr, ForeignPtr, Storable) 17import Foreign (Ptr, ForeignPtr, Storable)
@@ -14,6 +19,8 @@ import Foreign.C.Types (CInt)
14import GHC.Base (IO(..), realWorld#) 19import GHC.Base (IO(..), realWorld#)
15 20
16{-# INLINE unsafeInlinePerformIO #-} 21{-# INLINE unsafeInlinePerformIO #-}
22-- | If we use unsafePerformIO, it may not get inlined, so in a function that returns IO (which are all safe uses of app* in this module), there would be
23-- unecessary calls to unsafePerformIO or its internals.
17unsafeInlinePerformIO :: IO a -> a 24unsafeInlinePerformIO :: IO a -> a
18unsafeInlinePerformIO (IO f) = case f realWorld# of 25unsafeInlinePerformIO (IO f) = case f realWorld# of
19 (# _, x #) -> x 26 (# _, x #) -> x
@@ -65,8 +72,8 @@ appMatrixLen f x = unsafeInlinePerformIO (S.unsafeWith (flatten x) (return . f r
65 c = fromIntegral (cols x) 72 c = fromIntegral (cols x)
66 73
67{-# INLINE appMatrixRaw #-} 74{-# INLINE appMatrixRaw #-}
68appMatrixRaw :: Storable a => Matrix a -> (Ptr a -> b) -> b 75appMatrixRaw :: Storable a => (Ptr a -> b) -> Matrix a -> b
69appMatrixRaw x f = unsafeInlinePerformIO (S.unsafeWith (xdat x) (return . f)) 76appMatrixRaw f x = unsafeInlinePerformIO (S.unsafeWith (xdat x) (return . f))
70 77
71{-# INLINE appMatrixRawLen #-} 78{-# INLINE appMatrixRawLen #-}
72appMatrixRawLen :: Element a => (CInt -> CInt -> Ptr a -> b) -> Matrix a -> b 79appMatrixRawLen :: Element a => (CInt -> CInt -> Ptr a -> b) -> Matrix a -> b