From a77f07da16d94b93340bc4fcc391da1e817735d9 Mon Sep 17 00:00:00 2001
From: Tom Smeding <tom@tomsmeding.com>
Date: Thu, 23 May 2024 09:17:56 +0200
Subject: Clean up commented-out code

---
 src/Data/Array/Nested/Internal.hs | 33 ++++++++-------------------------
 1 file changed, 8 insertions(+), 25 deletions(-)

(limited to 'src/Data/Array')

diff --git a/src/Data/Array/Nested/Internal.hs b/src/Data/Array/Nested/Internal.hs
index 831a9b5..a96a268 100644
--- a/src/Data/Array/Nested/Internal.hs
+++ b/src/Data/Array/Nested/Internal.hs
@@ -1001,20 +1001,6 @@ mliftPrim2 :: PrimElt a
 mliftPrim2 f (toPrimitive -> M_Primitive sh (X.XArray arr1)) (toPrimitive -> M_Primitive _ (X.XArray arr2)) =
   fromPrimitive $ M_Primitive sh (X.XArray (S.zipWithA f arr1 arr2))
 
-{-}
-instance (Num a, PrimElt a) => Num (Mixed sh a) where
-  (+) = mliftPrim2 (+)
-  (-) = mliftPrim2 (-)
-  (*) = mliftPrim2 (*)
-  negate = mliftPrim negate
-  abs = mliftPrim abs
-  signum = mliftPrim signum
-  fromInteger _ = error "Data.Array.Nested.fromIntegral: No singletons available, use explicit mreplicate"
-
-type NumConstr a = Num a
---}
-
-{--}
 mliftNumElt1 :: PrimElt a => (SNat (Rank sh) -> S.Array (Rank sh) a -> S.Array (Rank sh) a) -> Mixed sh a -> Mixed sh a
 mliftNumElt1 f (toPrimitive -> M_Primitive sh (XArray arr)) = fromPrimitive $ M_Primitive sh (XArray (f (srankSh sh) arr))
 
@@ -1025,9 +1011,6 @@ mliftNumElt2 f (toPrimitive -> M_Primitive sh1 (XArray arr1)) (toPrimitive -> M_
   | sh1 == sh2 = fromPrimitive $ M_Primitive sh1 (XArray (f (srankSh sh1) arr1 arr2))
   | otherwise = error $ "Data.Array.Nested: Shapes unequal in elementwise Num operation: " ++ show sh1 ++ " vs " ++ show sh2
 
--- TODO: Clean up this mess and remove NumConstr
-type NumConstr a = NumElt a
-
 instance (NumElt a, PrimElt a) => Num (Mixed sh a) where
   (+) = mliftNumElt2 numEltAdd
   (-) = mliftNumElt2 numEltSub
@@ -1038,12 +1021,12 @@ instance (NumElt a, PrimElt a) => Num (Mixed sh a) where
   fromInteger _ = error "Data.Array.Nested.fromIntegral: No singletons available, use explicit mreplicate"
 --}
 
-instance (Fractional a, PrimElt a, NumConstr a) => Fractional (Mixed sh a) where
+instance (NumElt a, PrimElt a, Fractional a) => Fractional (Mixed sh a) where
   fromRational _ = error "Data.Array.Nested.fromRational: No singletons available, use explicit mreplicate"
   recip = mliftPrim recip
   (/) = mliftPrim2 (/)
 
-instance (Floating a, PrimElt a, NumConstr a) => Floating (Mixed sh a) where
+instance (NumElt a, PrimElt a, Floating a) => Floating (Mixed sh a) where
   pi = error "Data.Array.Nested.pi: No singletons available, use explicit mreplicate"
   exp = mliftPrim exp
   log = mliftPrim log
@@ -1346,7 +1329,7 @@ arithPromoteRanked2 :: forall n a. PrimElt a
                     -> Ranked n a -> Ranked n a -> Ranked n a
 arithPromoteRanked2 = coerce
 
-instance (NumConstr a, PrimElt a) => Num (Ranked n a) where
+instance (NumElt a, PrimElt a) => Num (Ranked n a) where
   (+) = arithPromoteRanked2 (+)
   (-) = arithPromoteRanked2 (-)
   (*) = arithPromoteRanked2 (*)
@@ -1355,12 +1338,12 @@ instance (NumConstr a, PrimElt a) => Num (Ranked n a) where
   signum = arithPromoteRanked signum
   fromInteger _ = error "Data.Array.Nested.fromIntegral: No singletons available, use explicit rreplicate"
 
-instance (Fractional a, PrimElt a, NumConstr a) => Fractional (Ranked n a) where
+instance (NumElt a, PrimElt a, Fractional a) => Fractional (Ranked n a) where
   fromRational _ = error "Data.Array.Nested.fromRational: No singletons available, use explicit rreplicate"
   recip = arithPromoteRanked recip
   (/) = arithPromoteRanked2 (/)
 
-instance (Floating a, PrimElt a, NumConstr a) => Floating (Ranked n a) where
+instance (NumElt a, PrimElt a, Floating a) => Floating (Ranked n a) where
   pi = error "Data.Array.Nested.pi: No singletons available, use explicit rreplicate"
   exp = arithPromoteRanked exp
   log = arithPromoteRanked log
@@ -1646,7 +1629,7 @@ arithPromoteShaped2 :: forall sh a. PrimElt a
                     -> Shaped sh a -> Shaped sh a -> Shaped sh a
 arithPromoteShaped2 = coerce
 
-instance (NumConstr a, PrimElt a) => Num (Shaped sh a) where
+instance (NumElt a, PrimElt a) => Num (Shaped sh a) where
   (+) = arithPromoteShaped2 (+)
   (-) = arithPromoteShaped2 (-)
   (*) = arithPromoteShaped2 (*)
@@ -1655,12 +1638,12 @@ instance (NumConstr a, PrimElt a) => Num (Shaped sh a) where
   signum = arithPromoteShaped signum
   fromInteger _ = error "Data.Array.Nested.fromIntegral: No singletons available, use explicit sreplicate"
 
-instance (Fractional a, PrimElt a, NumConstr a) => Fractional (Shaped sh a) where
+instance (NumElt a, PrimElt a, Fractional a) => Fractional (Shaped sh a) where
   fromRational _ = error "Data.Array.Nested.fromRational: No singletons available, use explicit sreplicate"
   recip = arithPromoteShaped recip
   (/) = arithPromoteShaped2 (/)
 
-instance (Floating a, PrimElt a, NumConstr a) => Floating (Shaped sh a) where
+instance (NumElt a, PrimElt a, Floating a) => Floating (Shaped sh a) where
   pi = error "Data.Array.Nested.pi: No singletons available, use explicit sreplicate"
   exp = arithPromoteShaped exp
   log = arithPromoteShaped log
-- 
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