From e07c3dee7235496b71a89233106d93f6cc94ada1 Mon Sep 17 00:00:00 2001
From: Alberto Ruiz <aruiz@um.es>
Date: Wed, 21 May 2014 09:57:03 +0200
Subject: Numeric.Container and Numeric.LinearAlgebra moved to base

---
 packages/hmatrix/src/Numeric/GSL/Vector.hs | 107 +++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 packages/hmatrix/src/Numeric/GSL/Vector.hs

(limited to 'packages/hmatrix/src/Numeric/GSL/Vector.hs')

diff --git a/packages/hmatrix/src/Numeric/GSL/Vector.hs b/packages/hmatrix/src/Numeric/GSL/Vector.hs
new file mode 100644
index 0000000..af79f32
--- /dev/null
+++ b/packages/hmatrix/src/Numeric/GSL/Vector.hs
@@ -0,0 +1,107 @@
+-----------------------------------------------------------------------------
+-- |
+-- Module      :  Numeric.GSL.Vector
+-- Copyright   :  (c) Alberto Ruiz 2007-14
+-- License     :  GPL
+-- Maintainer  :  Alberto Ruiz
+-- Stability   :  provisional
+--
+-----------------------------------------------------------------------------
+
+module Numeric.GSL.Vector (
+    randomVector,
+    saveMatrix,
+    fwriteVector, freadVector, fprintfVector, fscanfVector
+) where
+
+import Data.Packed
+import Numeric.LinearAlgebra(RandDist(..))
+import Numeric.GSL.Internal hiding (TV,TM,TCV,TCM)
+
+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
+
+-----------------------------------------------------------------------
+
+-- | 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_GSL (fi seed) ((fi.fromEnum) dist)) vec r "randomVectorGSL"
+    return r
+
+foreign import ccall unsafe "random_vector_GSL" c_random_vector_GSL :: 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 PD = Ptr Double                            --
+type TV = CInt -> PD -> IO CInt                 --
+type TM = CInt -> CInt -> PD -> IO CInt         --
+
-- 
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