hmpfr-0.1: Data/Number/MPFR/Internal.hs
{-# INCLUDE <mpfr.h> #-}
{-# INCLUDE <chsmpfr.h> #-}
{-# LANGUAGE BangPatterns #-}
module Data.Number.MPFR.Internal (
module FFIhelper,
withMPFRsBA, withMPFRBAui, withMPFRBAiu, withMPFRBAsi, withMPFRBAis,
withMPFRB, withMPFRP, withMPFR, withMPFRBB, withMPFRC,
withMPFRF, withMPFRUI, withMPFRR, checkPrec, getMantissa', binprec,
unsafePerformIO, peek, Ptr, nullPtr, mallocForeignPtrBytes, with,
withForeignPtr, CInt, CLong, CULong, withCString, peekCString, alloca,
peekArray, shiftL, Word, minPrec,
Precision
)
where
import Data.Number.MPFR.FFIhelper as FFIhelper
import Foreign.C(CInt, CLong, CULong, withCString, peekCString)
import Foreign.Marshal(alloca, peekArray)
import Foreign(unsafePerformIO, peek, Ptr, nullPtr, mallocForeignPtrBytes, with, withForeignPtr)
import Data.Bits(shiftL)
import Data.Word(Word)
type Precision = Word
-- these are helper functions, only for internal use
{-# INLINE withMPFRsBA #-}
withMPFRsBA :: RoundMode -> Precision -> MPFR -> MPFR
-> (Ptr MPFR -> Ptr MPFR -> Ptr MPFR -> CRoundMode -> IO CInt)
-> (MPFR, Int)
withMPFRsBA r p !mp1 !mp2 f = unsafePerformIO go
where go = do ls <- mpfr_custom_get_size (fromIntegral p)
fp <- mallocForeignPtrBytes (fromIntegral ls)
let dummy = MP (fromIntegral p) 0 0 fp
with dummy $! \p1 -> do
with mp1 $! \p2 -> do
with mp2 $! \p3 -> do
r2 <- f p1 p2 p3 ((fromIntegral . fromEnum) r)
r1 <- peekP p1 fp
return (r1, fromIntegral r2)
{-# INLINE withMPFRBAui #-}
withMPFRBAui :: RoundMode -> Precision -> MPFR -> CULong
-> (Ptr MPFR -> Ptr MPFR -> CULong -> CRoundMode -> IO CInt)
-> (MPFR, Int)
withMPFRBAui r p !mp1 d f = unsafePerformIO go
where go = do ls <- mpfr_custom_get_size (fromIntegral p)
fp <- mallocForeignPtrBytes (fromIntegral ls)
let dummy = MP (fromIntegral p) 0 0 fp
with dummy $! \p1 -> do
with mp1 $! \p2 -> do
r2 <- f p1 p2 d ((fromIntegral . fromEnum) r)
r1 <- peekP p1 fp
return (r1, fromIntegral r2)
{-# INLINE withMPFRBAsi #-}
withMPFRBAsi :: RoundMode -> Precision -> MPFR -> CLong
-> (Ptr MPFR -> Ptr MPFR -> CLong -> CRoundMode -> IO CInt)
-> (MPFR, Int)
withMPFRBAsi r p !mp1 d f = unsafePerformIO go
where go = do ls <- mpfr_custom_get_size (fromIntegral p)
fp <- mallocForeignPtrBytes (fromIntegral ls)
let dummy = MP (fromIntegral p) 0 0 fp
with dummy $! \p1 -> do
with mp1 $! \p2 -> do
r2 <- f p1 p2 d ((fromIntegral . fromEnum) r)
r1 <- peekP p1 fp
return (r1, fromIntegral r2)
{-# INLINE withMPFRBAiu #-}
withMPFRBAiu :: RoundMode -> Precision -> CULong -> MPFR
-> (Ptr MPFR -> CULong -> Ptr MPFR -> CRoundMode -> IO CInt)
-> (MPFR, Int)
withMPFRBAiu r p d !mp1 f = unsafePerformIO go
where go = do ls <- mpfr_custom_get_size (fromIntegral p)
fp <- mallocForeignPtrBytes (fromIntegral ls)
let dummy = MP (fromIntegral p) 0 0 fp
with dummy $! \p1 -> do
with mp1 $! \p2 -> do
r2 <- f p1 d p2 ((fromIntegral . fromEnum) r)
r1 <- peekP p1 fp
return (r1, fromIntegral r2)
{-# INLINE withMPFRBAis #-}
withMPFRBAis :: RoundMode -> Precision -> CLong -> MPFR
-> (Ptr MPFR -> CLong -> Ptr MPFR -> CRoundMode -> IO CInt)
-> (MPFR, Int)
withMPFRBAis r p d !mp1 f = unsafePerformIO go
where go = do ls <- mpfr_custom_get_size (fromIntegral p)
fp <- mallocForeignPtrBytes (fromIntegral ls)
let dummy = MP (fromIntegral p) 0 0 fp
with dummy $! \p1 -> do
with mp1 $! \p2 -> do
r2 <- f p1 d p2 ((fromIntegral . fromEnum) r)
r1 <- peekP p1 fp
return (r1, fromIntegral r2)
{-# INLINE withMPFRB #-}
withMPFRB :: MPFR -> (Ptr MPFR -> IO CInt) -> CInt
withMPFRB mp1 !f = unsafePerformIO go
where go = with mp1 $! \p1 -> f p1
withMPFRP :: MPFR -> (Ptr MPFR -> IO CPrecision) -> CPrecision
withMPFRP mp1 !f = unsafePerformIO go
where go = with mp1 $! \p1 -> f p1
{-# INLINE withMPFR #-}
withMPFR :: RoundMode -> Precision -> MPFR
-> (Ptr MPFR -> Ptr MPFR -> CRoundMode -> IO CInt)
-> (MPFR, Int)
withMPFR r p !mp1 f = unsafePerformIO go
where go = do ls <- mpfr_custom_get_size (fromIntegral p)
fp <- mallocForeignPtrBytes (fromIntegral ls)
let dummy = MP (fromIntegral p) 0 0 fp
with dummy $! \p1 -> do
with mp1 $! \p2 -> do
r2 <- f p1 p2 ((fromIntegral . fromEnum) r)
r1 <- peekP p1 fp
return (r1, fromIntegral r2)
{-# INLINE withMPFRBB #-}
withMPFRBB :: MPFR -> MPFR
-> (Ptr MPFR -> Ptr MPFR -> IO CInt)
-> CInt
withMPFRBB mp1 mp2 f = unsafePerformIO go
where go = do with mp1 $! \p1 -> do
with mp2 $! \p2 -> do
f p1 p2
{-# INLINE withMPFRC #-}
withMPFRC :: RoundMode -> Precision ->
(Ptr MPFR -> CRoundMode -> IO CInt) -> (MPFR, Int)
withMPFRC r p f = unsafePerformIO go
where go = do ls <- mpfr_custom_get_size (fromIntegral p)
fp <- mallocForeignPtrBytes (fromIntegral ls)
let dummy = MP (fromIntegral p) 0 0 fp
with dummy $! \p1 -> do
r2 <- f p1 ((fromIntegral . fromEnum) r)
r1 <- peekP p1 fp
return (r1, fromIntegral r2)
withMPFRF :: MPFR -> RoundMode
-> (Ptr MPFR -> CRoundMode -> IO CInt)
-> Int
withMPFRF !mp1 r f = (fromIntegral . unsafePerformIO) go
where go = do with mp1 $! \p1 -> f p1 ((fromIntegral . fromEnum) r)
{-# INLINE withMPFRUI #-}
withMPFRUI :: RoundMode -> Precision -> Word
-> (Ptr MPFR -> CULong -> CRoundMode -> IO CInt)
-> (MPFR, Int)
withMPFRUI r p d f = unsafePerformIO go
where go = do ls <- mpfr_custom_get_size (fromIntegral p)
fp <- mallocForeignPtrBytes (fromIntegral ls)
let dummy = MP (fromIntegral p) 0 0 fp
with dummy $! \p1 -> do
r2 <- f p1 (fromIntegral d) ((fromIntegral . fromEnum) r)
r1 <- peekP p1 fp
return (r1, fromIntegral r2)
{-# INLINE withMPFRR #-}
withMPFRR :: Precision -> MPFR
-> (Ptr MPFR -> Ptr MPFR -> IO CInt)
-> (MPFR, Int)
withMPFRR p d f = unsafePerformIO go
where go = do ls <- mpfr_custom_get_size (fromIntegral p)
fp <- mallocForeignPtrBytes (fromIntegral ls)
let dummy = MP (fromIntegral p) 0 0 fp
with dummy $! \p1 -> do
with d $! \p2 -> do
r2 <- f p1 p2
r1 <- peekP p1 fp
return (r1, fromIntegral r2)
checkPrec :: Precision -> Precision
checkPrec = max minPrec
getMantissa' :: MPFR -> [Limb]
getMantissa' (MP p _ _ p1) = unsafePerformIO go
where go = do withForeignPtr p1 $! \pt -> do
arr <- peekArray (Prelude.ceiling ((fromIntegral p ::Double) / fromIntegral bitsPerMPLimb)) pt ;
return arr
{- TODO: this is inefficient
binprec :: Integer -> Precision
binprec i = length (takeWhile (/= 0) (iterate (flip shiftR 1) i)
-}
-- TODO
binprec :: Integer -> Precision
binprec d = Prelude.floor (logBase 2 (fromInteger (if d >= 0 then d else -d)) :: Double) + 1
--one :: MPFR
--one = fromWord Near minPrec 1
--zero :: MPFR
--ggzero = fromWord Near minPrec 0
minPrec :: Precision
minPrec = 32