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| author | Mikolaj Konarski <mikolaj.konarski@funktory.com> | 2025-12-16 20:43:38 +0100 |
|---|---|---|
| committer | Mikolaj Konarski <mikolaj.konarski@funktory.com> | 2025-12-16 20:43:38 +0100 |
| commit | de187b9b7e9cbdb79429c505f1e0f9954593c76c (patch) | |
| tree | 67af6925ef466de2b4f87a8d47b4888e067be669 /src/Data/Array/Nested/Ranked/Shape.hs | |
| parent | d07632166f162bdfef2d7574ddcf2c1d95932d5c (diff) | |
De-triplicate ix?ToLinear
Diffstat (limited to 'src/Data/Array/Nested/Ranked/Shape.hs')
| -rw-r--r-- | src/Data/Array/Nested/Ranked/Shape.hs | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/src/Data/Array/Nested/Ranked/Shape.hs b/src/Data/Array/Nested/Ranked/Shape.hs index 0ac980e..74f4c5c 100644 --- a/src/Data/Array/Nested/Ranked/Shape.hs +++ b/src/Data/Array/Nested/Ranked/Shape.hs @@ -290,14 +290,10 @@ ixrPermutePrefix = coerce (listrPermutePrefix @i) -- index into the buffer. {-# INLINEABLE ixrToLinear #-} ixrToLinear :: Num i => IShR m -> IxR m i -> i -ixrToLinear = \sh i -> go sh i 0 - where - -- Additional argument: index, in the @m - m1@ dimensional array so far, - -- of the @m - m1 + n@ dimensional tensor pointed to by the current - -- @m - m1@ dimensional index prefix. - go :: Num i => IShR m1 -> IxR m1 i -> i -> i - go ZSR ZIR a = a - go (n :$: sh) (i :.: ix) a = go sh ix (fromIntegral n * a + i) +ixrToLinear (ShR sh) ix = ixxToLinear sh (ixxFromIxR ix) + +ixxFromIxR :: IxR n i -> IxX (Replicate n Nothing) i +ixxFromIxR = unsafeCoerce {-# INLINEABLE ixrFromLinear #-} ixrFromLinear :: forall i m. Num i => IShR m -> Int -> IxR m i |