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|
{-# OPTIONS_GHC -fglasgow-exts #-}
-----------------------------------------------------------------------------
-- |
-- Module : Numeric.GSL.Vector
-- Copyright : (c) Alberto Ruiz 2007
-- License : GPL-style
--
-- Maintainer : Alberto Ruiz <aruiz@um.es>
-- Stability : provisional
-- Portability : portable (uses FFI)
--
-- Low level interface to vector operations.
--
-----------------------------------------------------------------------------
module Numeric.GSL.Vector (
FunCodeS(..), toScalarR,
FunCodeV(..), vectorMapR, vectorMapC,
FunCodeSV(..), vectorMapValR, vectorMapValC,
FunCodeVV(..), vectorZipR, vectorZipC
) where
import Data.Packed.Internal.Common
import Data.Packed.Internal.Vector
import Complex
import Foreign
import Foreign.C.Types(CInt)
fromei x = fromIntegral (fromEnum x)
data FunCodeV = Sin
| Cos
| Tan
| Abs
| ASin
| ACos
| ATan
| Sinh
| Cosh
| Tanh
| ASinh
| ACosh
| ATanh
| Exp
| Log
| Sign
| Sqrt
deriving Enum
data FunCodeSV = Scale
| Recip
| AddConstant
| Negate
| PowSV
| PowVS
deriving Enum
data FunCodeVV = Add
| Sub
| Mul
| Div
| Pow
| ATan2
deriving Enum
data FunCodeS = Norm2
| AbsSum
| MaxIdx
| Max
| MinIdx
| Min
deriving Enum
------------------------------------------------------------------
toScalarAux fun code v = unsafePerformIO $ do
r <- createVector 1
app2 (fun (fromei code)) vec v vec r "toScalarAux"
return (r `at` 0)
vectorMapAux fun code v = unsafePerformIO $ do
r <- createVector (dim v)
app2 (fun (fromei code)) vec v vec r "vectorMapAux"
return r
vectorMapValAux fun code val v = unsafePerformIO $ do
r <- createVector (dim v)
pval <- newArray [val]
app2 (fun (fromei code) pval) vec v vec r "vectorMapValAux"
free pval
return r
vectorZipAux fun code u v = unsafePerformIO $ do
r <- createVector (dim u)
app3 (fun (fromei code)) vec u vec v vec r "vectorZipAux"
return r
---------------------------------------------------------------------
-- | obtains different functions of a vector: norm1, norm2, max, min, posmax, posmin, etc.
toScalarR :: FunCodeS -> Vector Double -> Double
toScalarR oper = toScalarAux c_toScalarR (fromei oper)
foreign import ccall safe "gsl-aux.h toScalarR" c_toScalarR :: CInt -> TVV
------------------------------------------------------------------
-- | map of real vectors with given function
vectorMapR :: FunCodeV -> Vector Double -> Vector Double
vectorMapR = vectorMapAux c_vectorMapR
foreign import ccall safe "gsl-aux.h mapR" c_vectorMapR :: CInt -> TVV
-- | map of complex vectors with given function
vectorMapC :: FunCodeV -> Vector (Complex Double) -> Vector (Complex Double)
vectorMapC oper = vectorMapAux c_vectorMapC (fromei oper)
foreign import ccall safe "gsl-aux.h mapC" c_vectorMapC :: CInt -> TCVCV
-------------------------------------------------------------------
-- | map of real vectors with given function
vectorMapValR :: FunCodeSV -> Double -> Vector Double -> Vector Double
vectorMapValR oper = vectorMapValAux c_vectorMapValR (fromei oper)
foreign import ccall safe "gsl-aux.h mapValR" c_vectorMapValR :: CInt -> Ptr Double -> TVV
-- | map of complex vectors with given function
vectorMapValC :: FunCodeSV -> Complex Double -> Vector (Complex Double) -> Vector (Complex Double)
vectorMapValC = vectorMapValAux c_vectorMapValC
foreign import ccall safe "gsl-aux.h mapValC" c_vectorMapValC :: CInt -> Ptr (Complex Double) -> TCVCV
-------------------------------------------------------------------
-- | elementwise operation on real vectors
vectorZipR :: FunCodeVV -> Vector Double -> Vector Double -> Vector Double
vectorZipR = vectorZipAux c_vectorZipR
foreign import ccall safe "gsl-aux.h zipR" c_vectorZipR :: CInt -> TVVV
-- | elementwise operation on complex vectors
vectorZipC :: FunCodeVV -> Vector (Complex Double) -> Vector (Complex Double) -> Vector (Complex Double)
vectorZipC = vectorZipAux c_vectorZipC
foreign import ccall safe "gsl-aux.h zipC" c_vectorZipC :: CInt -> TCVCVCV
|
