From 2749f4ef144cbc8541d70434f46abf312a1bb42e Mon Sep 17 00:00:00 2001
From: Alberto Ruiz <aruiz@um.es>
Date: Sun, 28 Jun 2015 14:18:25 +0200
Subject: copy slice

---
 packages/base/src/Internal/Matrix.hs | 17 +++--------------
 packages/base/src/Internal/ST.hs     | 11 +++++------
 2 files changed, 8 insertions(+), 20 deletions(-)

(limited to 'packages/base/src')

diff --git a/packages/base/src/Internal/Matrix.hs b/packages/base/src/Internal/Matrix.hs
index bdf2785..8597dcb 100644
--- a/packages/base/src/Internal/Matrix.hs
+++ b/packages/base/src/Internal/Matrix.hs
@@ -142,10 +142,9 @@ a # b = apply a b
 
 --------------------------------------------------------------------------------
 
-extractAll ord m = unsafePerformIO $
-    extractR ord m
-             0 (idxs[0,rows m-1])
-             0 (idxs[0,cols m-1])
+copy ord m = extractR ord m 0 (idxs[0,rows m-1]) 0 (idxs[0,cols m-1])
+
+extractAll ord m = unsafePerformIO (copy ord m)
 
 {- | Creates a vector by concatenation of rows. If the matrix is ColumnMajor, this operation requires a transpose.
 
@@ -204,16 +203,6 @@ toRows m
     sub k = subVector (k*xRow m) (cols m) (xdat m)
     ext k = xdat $ unsafePerformIO $ extractR RowMajor m 1 (idxs[k]) 0 (idxs[0,cols m-1])
 
-{-
-    | c == 0    = replicate r (fromList[])
-    | otherwise = toRows' 0
-  where
-    v = flatten m
-    r = rows m
-    c = cols m
-    toRows' k | k == r*c  = []
-              | otherwise = subVector k c v : toRows' (k+c)
--}
 
 -- | Creates a matrix from a list of vectors, as columns
 fromColumns :: Element t => [Vector t] -> Matrix t
diff --git a/packages/base/src/Internal/ST.hs b/packages/base/src/Internal/ST.hs
index 23fda99..91c2a11 100644
--- a/packages/base/src/Internal/ST.hs
+++ b/packages/base/src/Internal/ST.hs
@@ -119,7 +119,7 @@ ioWriteM m r c val = ioWriteV (xdat m)  (r * xRow m + c * xCol m) val
 
 newtype STMatrix s t = STMatrix (Matrix t)
 
-thawMatrix :: Storable t => Matrix t -> ST s (STMatrix s t)
+thawMatrix :: Element t => Matrix t -> ST s (STMatrix s t)
 thawMatrix = unsafeIOToST . fmap STMatrix . cloneMatrix
 
 unsafeThawMatrix :: Storable t => Matrix t -> ST s (STMatrix s t)
@@ -140,18 +140,17 @@ unsafeWriteMatrix  (STMatrix x) r c = unsafeIOToST . ioWriteM x r c
 modifyMatrix :: (Storable t) => STMatrix s t -> Int -> Int -> (t -> t) -> ST s ()
 modifyMatrix x r c f = readMatrix x r c >>= return . f >>= unsafeWriteMatrix x r c
 
-liftSTMatrix :: (Storable t) => (Matrix t -> a) -> STMatrix s t -> ST s a
+liftSTMatrix :: (Element t) => (Matrix t -> a) -> STMatrix s t -> ST s a
 liftSTMatrix f (STMatrix x) = unsafeIOToST . fmap f . cloneMatrix $ x
 
 unsafeFreezeMatrix :: (Storable t) => STMatrix s t -> ST s (Matrix t)
 unsafeFreezeMatrix (STMatrix x) = unsafeIOToST . return $ x
 
 
-freezeMatrix :: (Storable t) => STMatrix s t -> ST s (Matrix t)
+freezeMatrix :: (Element t) => STMatrix s t -> ST s (Matrix t)
 freezeMatrix m = liftSTMatrix id m
 
--- FIXME
-cloneMatrix m = cloneVector (xdat m) >>= return . (\d' -> m{xdat = d'})
+cloneMatrix m = copy (orderOf m) m
 
 {-# INLINE safeIndexM #-}
 safeIndexM f (STMatrix m) r c
@@ -242,7 +241,7 @@ gemmm beta (slice->(r,pr)) alpha (slice->(a,pa)) (slice->(b,pb)) = res
     v = vjoin[pa,pb,pr]
     
 
-mutable :: Storable t => (forall s . (Int, Int) -> STMatrix s t -> ST s u) -> Matrix t -> (Matrix t,u)
+mutable :: Element t => (forall s . (Int, Int) -> STMatrix s t -> ST s u) -> Matrix t -> (Matrix t,u)
 mutable f a = runST $ do
    x <- thawMatrix a
    info <- f (rows a, cols a) x
-- 
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