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|
-----------------------------------------------------------------------------
-- |
-- Module : Numeric.GSL.Vector
-- Copyright : (c) Alberto Ruiz 2007
-- License : GPL
-- Maintainer : Alberto Ruiz
-- Stability : provisional
--
-- Low level interface to vector operations.
--
-----------------------------------------------------------------------------
module Numeric.GSL.Vector (
RandDist(..), randomVector,
saveMatrix,
fwriteVector, freadVector, fprintfVector, fscanfVector
) where
import Data.Packed
import Numeric.GSL.Internal hiding (TV,TM,TCV,TCM)
import Data.Complex
import Foreign.Marshal.Alloc(free)
import Foreign.Ptr(Ptr)
import Foreign.C.Types
import Foreign.C.String(newCString)
import System.IO.Unsafe(unsafePerformIO)
fromei x = fromIntegral (fromEnum x) :: CInt
-----------------------------------------------------------------------
data RandDist = Uniform -- ^ uniform distribution in [0,1)
| Gaussian -- ^ normal distribution with mean zero and standard deviation one
deriving Enum
-- | Obtains a vector of pseudorandom elements from the the mt19937 generator in GSL, with a given seed. Use randomIO to get a random seed.
randomVector :: Int -- ^ seed
-> RandDist -- ^ distribution
-> Int -- ^ vector size
-> Vector Double
randomVector seed dist n = unsafePerformIO $ do
r <- createVector n
app1 (c_random_vector (fi seed) ((fi.fromEnum) dist)) vec r "randomVector"
return r
foreign import ccall unsafe "random_vector" c_random_vector :: CInt -> CInt -> TV
--------------------------------------------------------------------------------
-- | Saves a matrix as 2D ASCII table.
saveMatrix :: FilePath
-> String -- ^ format (%f, %g, %e)
-> Matrix Double
-> IO ()
saveMatrix filename fmt m = do
charname <- newCString filename
charfmt <- newCString fmt
let o = if orderOf m == RowMajor then 1 else 0
app1 (matrix_fprintf charname charfmt o) mat m "matrix_fprintf"
free charname
free charfmt
foreign import ccall unsafe "matrix_fprintf" matrix_fprintf :: Ptr CChar -> Ptr CChar -> CInt -> TM
--------------------------------------------------------------------------------
-- | Loads a vector from an ASCII file (the number of elements must be known in advance).
fscanfVector :: FilePath -> Int -> IO (Vector Double)
fscanfVector filename n = do
charname <- newCString filename
res <- createVector n
app1 (gsl_vector_fscanf charname) vec res "gsl_vector_fscanf"
free charname
return res
foreign import ccall unsafe "vector_fscanf" gsl_vector_fscanf:: Ptr CChar -> TV
-- | Saves the elements of a vector, with a given format (%f, %e, %g), to an ASCII file.
fprintfVector :: FilePath -> String -> Vector Double -> IO ()
fprintfVector filename fmt v = do
charname <- newCString filename
charfmt <- newCString fmt
app1 (gsl_vector_fprintf charname charfmt) vec v "gsl_vector_fprintf"
free charname
free charfmt
foreign import ccall unsafe "vector_fprintf" gsl_vector_fprintf :: Ptr CChar -> Ptr CChar -> TV
-- | Loads a vector from a binary file (the number of elements must be known in advance).
freadVector :: FilePath -> Int -> IO (Vector Double)
freadVector filename n = do
charname <- newCString filename
res <- createVector n
app1 (gsl_vector_fread charname) vec res "gsl_vector_fread"
free charname
return res
foreign import ccall unsafe "vector_fread" gsl_vector_fread:: Ptr CChar -> TV
-- | Saves the elements of a vector to a binary file.
fwriteVector :: FilePath -> Vector Double -> IO ()
fwriteVector filename v = do
charname <- newCString filename
app1 (gsl_vector_fwrite charname) vec v "gsl_vector_fwrite"
free charname
foreign import ccall unsafe "vector_fwrite" gsl_vector_fwrite :: Ptr CChar -> TV
type PF = Ptr Float --
type PD = Ptr Double --
type PQ = Ptr (Complex Float) --
type PC = Ptr (Complex Double) --
type TF = CInt -> PF -> IO CInt --
type TFF = CInt -> PF -> TF --
type TFV = CInt -> PF -> TV --
type TVF = CInt -> PD -> TF --
type TFFF = CInt -> PF -> TFF --
type TV = CInt -> PD -> IO CInt --
type TVV = CInt -> PD -> TV --
type TVVV = CInt -> PD -> TVV --
type TFM = CInt -> CInt -> PF -> IO CInt --
type TFMFM = CInt -> CInt -> PF -> TFM --
type TFMFMFM = CInt -> CInt -> PF -> TFMFM --
type TM = CInt -> CInt -> PD -> IO CInt --
type TMM = CInt -> CInt -> PD -> TM --
type TVMM = CInt -> PD -> TMM --
type TMVMM = CInt -> CInt -> PD -> TVMM --
type TMMM = CInt -> CInt -> PD -> TMM --
type TVM = CInt -> PD -> TM --
type TVVM = CInt -> PD -> TVM --
type TMV = CInt -> CInt -> PD -> TV --
type TMMV = CInt -> CInt -> PD -> TMV --
type TMVM = CInt -> CInt -> PD -> TVM --
type TMMVM = CInt -> CInt -> PD -> TMVM --
type TCM = CInt -> CInt -> PC -> IO CInt --
type TCVCM = CInt -> PC -> TCM --
type TCMCVCM = CInt -> CInt -> PC -> TCVCM --
type TMCMCVCM = CInt -> CInt -> PD -> TCMCVCM --
type TCMCMCVCM = CInt -> CInt -> PC -> TCMCVCM --
type TCMCM = CInt -> CInt -> PC -> TCM --
type TVCM = CInt -> PD -> TCM --
type TCMVCM = CInt -> CInt -> PC -> TVCM --
type TCMCMVCM = CInt -> CInt -> PC -> TCMVCM --
type TCMCMCM = CInt -> CInt -> PC -> TCMCM --
type TCV = CInt -> PC -> IO CInt --
type TCVCV = CInt -> PC -> TCV --
type TCVCVCV = CInt -> PC -> TCVCV --
type TCVV = CInt -> PC -> TV --
type TQV = CInt -> PQ -> IO CInt --
type TQVQV = CInt -> PQ -> TQV --
type TQVQVQV = CInt -> PQ -> TQVQV --
type TQVF = CInt -> PQ -> TF --
type TQM = CInt -> CInt -> PQ -> IO CInt --
type TQMQM = CInt -> CInt -> PQ -> TQM --
type TQMQMQM = CInt -> CInt -> PQ -> TQMQM --
type TCMCV = CInt -> CInt -> PC -> TCV --
type TVCV = CInt -> PD -> TCV --
type TCVM = CInt -> PC -> TM --
type TMCVM = CInt -> CInt -> PD -> TCVM --
type TMMCVM = CInt -> CInt -> PD -> TMCVM --
|
