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|
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE TypeFamilies #-}
-- |
-- Module : Internal.Devel
-- Copyright : (c) Alberto Ruiz 2007-15
-- License : BSD3
-- Maintainer : Alberto Ruiz
-- Stability : provisional
--
module Internal.Devel where
import Control.Monad ( when )
import Foreign.C.Types ( CInt )
--import Foreign.Storable.Complex ()
import Foreign.Ptr(Ptr)
import Control.Exception as E ( SomeException, catch )
import Internal.Vector(Vector,avec)
import Foreign.Storable(Storable)
-- | postfix function application (@flip ($)@)
(//) :: x -> (x -> y) -> y
infixl 0 //
(//) = flip ($)
-- GSL error codes are <= 1024
-- | error codes for the auxiliary functions required by the wrappers
errorCode :: CInt -> String
errorCode 2000 = "bad size"
errorCode 2001 = "bad function code"
errorCode 2002 = "memory problem"
errorCode 2003 = "bad file"
errorCode 2004 = "singular"
errorCode 2005 = "didn't converge"
errorCode 2006 = "the input matrix is not positive definite"
errorCode 2007 = "not yet supported in this OS"
errorCode n = "code "++show n
-- | clear the fpu
foreign import ccall unsafe "asm_finit" finit :: IO ()
-- | check the error code
check :: String -> IO CInt -> IO ()
check msg f = do
-- finit
err <- f
when (err/=0) $ error (msg++": "++errorCode err)
return ()
-- | postfix error code check
infixl 0 #|
(#|) = flip check
-- | Error capture and conversion to Maybe
mbCatch :: IO x -> IO (Maybe x)
mbCatch act = E.catch (Just `fmap` act) f
where f :: SomeException -> IO (Maybe x)
f _ = return Nothing
--------------------------------------------------------------------------------
type CM b r = CInt -> CInt -> Ptr b -> r
type CV b r = CInt -> Ptr b -> r
type OM b r = CInt -> CInt -> CInt -> CInt -> Ptr b -> r
type CIdxs r = CV CInt r
type Ok = IO CInt
infixr 5 :>, ::>, ..>
type (:>) t r = CV t r
type (::>) t r = OM t r
type (..>) t r = CM t r
class TransArray c
where
type Trans c b
type TransRaw c b
apply :: (Trans c b) -> c -> b
applyRaw :: (TransRaw c b) -> c -> b
infixl 1 `apply`, `applyRaw`
instance Storable t => TransArray (Vector t)
where
type Trans (Vector t) b = CInt -> Ptr t -> b
type TransRaw (Vector t) b = CInt -> Ptr t -> b
apply = avec
{-# INLINE apply #-}
applyRaw = avec
{-# INLINE applyRaw #-}
|
