Copyright	[2016..2020] The Accelerate Team
License	BSD3
Maintainer	Trevor L. McDonell <trevor.mcdonell@gmail.com>
Stability	experimental
Portability	non-portable (GHC extensions)
Safe Haskell	None
Language	Haskell2010

Data.Array.Accelerate.IO.Data.Array.Unboxed

Description

Efficient conversion between immutable unboxed IArrays and Accelerate Arrays.

Synopsis

type family IxShapeRepr e where ...
fromUArray :: forall ix sh e. (HasCallStack, IxShapeRepr (EltR ix) ~ EltR sh, IArray UArray e, Ix ix, Shape sh, Elt ix, Elt e) => UArray ix e -> Array sh e
toUArray :: forall ix sh e. (HasCallStack, IxShapeRepr (EltR ix) ~ EltR sh, IArray UArray e, Ix ix, Shape sh, Elt e, Elt ix) => Maybe ix -> Array sh e -> UArray ix e

Documentation

type family IxShapeRepr e where ... Source #

Equations

IxShapeRepr () = ()
IxShapeRepr Int = ((), Int)
IxShapeRepr (t, h) = (IxShapeRepr t, h)

fromUArray :: forall ix sh e. (HasCallStack, IxShapeRepr (EltR ix) ~ EltR sh, IArray UArray e, Ix ix, Shape sh, Elt ix, Elt e) => UArray ix e -> Array sh e Source #

O(n). Convert an unboxed UArray into an Accelerate array.

See fromIArray for more information about the array index type.

If the underlying vectors are pinned then this can be done without copying.

since 0.1.0.0

Arguments

:: (HasCallStack, IxShapeRepr (EltR ix) ~ EltR sh, IArray UArray e, Ix ix, Shape sh, Elt e, Elt ix)
=> Maybe ix	if `Just` this is the index lower bound, otherwise the array is indexed from zero
-> Array sh e
-> UArray ix e

O(1) (typically). Convert an Accelerate Array to an unboxed UArray.

See fromIArray for more information about the array index type.

If the array data was allocated by Accelerate, this can typically be done without copying.

since 0.1.0.0