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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> | 2026-02-18 14:23:02 +0100 |
| commit | b146be9b503c034438fe63423f5b2d1912686a34 (patch) | |
| tree | f49b0598fb57666d8683e1f1d48f29cdcfdbad1f /src/Data/Array/Nested/Shaped | |
| parent | bf9b6b8f147c1cb26bba4459d760723648f72b9d (diff) | |
De-triplicate ix?ToLinear
Diffstat (limited to 'src/Data/Array/Nested/Shaped')
| -rw-r--r-- | src/Data/Array/Nested/Shaped/Shape.hs | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/src/Data/Array/Nested/Shaped/Shape.hs b/src/Data/Array/Nested/Shaped/Shape.hs index 39be729..634c854 100644 --- a/src/Data/Array/Nested/Shaped/Shape.hs +++ b/src/Data/Array/Nested/Shaped/Shape.hs @@ -311,11 +311,10 @@ ixsPermutePrefix = coerce (listsPermutePrefix @(Const i)) -- index into the buffer. {-# INLINEABLE ixsToLinear #-} ixsToLinear :: Num i => ShS sh -> IxS sh i -> i -ixsToLinear = \sh i -> go sh i 0 - where - go :: Num i => ShS sh -> IxS sh i -> i -> i - go ZSS ZIS a = a - go (n :$$ sh) (i :.$ ix) a = go sh ix (fromIntegral (fromSNat' n) * a + i) +ixsToLinear (ShS sh) ix = ixxToLinear sh (ixxFromIxS ix) + +ixxFromIxS :: IxS sh i -> IxX (MapJust sh) i +ixxFromIxS = unsafeCoerce {-# INLINEABLE ixsFromLinear #-} ixsFromLinear :: Num i => ShS sh -> Int -> IxS sh i |