Safe Haskell	None
Language	Haskell98

Data.Array.Repa.Stencil.Dim2

Contents

Stencil creation
Stencil operators

Synopsis

makeStencil2 :: Num a => Int -> Int -> (DIM2 -> Maybe a) -> Stencil DIM2 a
stencil2 :: QuasiQuoter
type PC5 = P C (P (S D) (P (S D) (P (S D) (P (S D) X))))
mapStencil2 :: Source r a => Boundary a -> Stencil DIM2 a -> Array r DIM2 a -> Array PC5 DIM2 a
forStencil2 :: Source r a => Boundary a -> Array r DIM2 a -> Stencil DIM2 a -> Array PC5 DIM2 a

Stencil creation

makeStencil2 Source #

Arguments

:: Num a
=> Int
-> Int	extent of stencil
-> (DIM2 -> Maybe a)	Get the coefficient at this index.
-> Stencil DIM2 a

Wrapper for makeStencil that requires a DIM2 stencil.

stencil2 :: QuasiQuoter Source #

QuasiQuoter for producing a static stencil defintion.

A definition like

    [stencil2|  0 1 0
                1 0 1
                0 1 0 |]

Is converted to:

    makeStencil2 (Z:.3:.3)
       (\ix -> case ix of
                 Z :. -1 :.  0  -> Just 1
                 Z :.  0 :. -1  -> Just 1
                 Z :.  0 :.  1  -> Just 1
                 Z :.  1 :.  0  -> Just 1
                 _              -> Nothing)

Stencil operators

type PC5 = P C (P (S D) (P (S D) (P (S D) (P (S D) X)))) Source #

mapStencil2 Source #

Arguments

:: Source r a
=> Boundary a	How to handle the boundary of the array.
-> Stencil DIM2 a	Stencil to apply.
-> Array r DIM2 a	Array to apply stencil to.
-> Array PC5 DIM2 a

Apply a stencil to every element of a 2D array.

forStencil2 :: Source r a => Boundary a -> Array r DIM2 a -> Stencil DIM2 a -> Array PC5 DIM2 a Source #

Like mapStencil2 but with the parameters flipped.