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Fix mapreduce on AdjOrTrans #46605

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merged 8 commits into from
Sep 16, 2022
Merged

Fix mapreduce on AdjOrTrans #46605

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26694b4
pass transpose's _mapreduce to parent
SobhanMP Sep 2, 2022
5e676e6
add hooks for `all`, `any` and `count`
dkarrasch Sep 6, 2022
858e4a9
restrict to commutative ops, extend tests
dkarrasch Sep 7, 2022
bfd33f9
Update stdlib/LinearAlgebra/src/adjtrans.jl
dkarrasch Sep 12, 2022
62e0d1a
include review comments
dkarrasch Sep 13, 2022
2edaae9
restrict *-mapreducedim
dkarrasch Sep 13, 2022
ee88096
include permutedims
dkarrasch Sep 13, 2022
d6deee2
fix typos
dkarrasch Sep 13, 2022
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include permutedims
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@dkarrasch
dkarrasch committed Sep 13, 2022
commit ee880962bc1638158edfc45c5f66ab7023da2149
14 changes: 12 additions & 2 deletions base/permuteddimsarray.jl
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Expand Up @@ -275,11 +275,21 @@ end
P
end

function Base._mapreduce_dim(f, op, init::Base._InitialValue, A::PermutedDimsArray, dims::Colon)
const CommutativeOps = Union{typeof(+),typeof(Base.add_sum),typeof(min),typeof(max),typeof(Base._extrema_rf),typeof(|),typeof(&)}

function Base._mapreduce_dim(f, op::CommutativeOps, init::Base._InitialValue, A::PermutedDimsArray, dims::Colon)
Base._mapreduce_dim(f, op, init, parent(A), dims)
end
function Base._mapreduce_dim(f::typeof(identity), op::Union{typeof(Base.mul_prod),typeof(*)}, init::Base._InitialValue, A::PermutedDimsArray{<:Union{Real,Complex}}, dims::Colon)
Base._mapreduce_dim(f, op, init, parent(A), dims)
end

function Base.mapreducedim!(f, op, B::AbstractArray{T,N}, A::PermutedDimsArray{T,N,perm,iperm}) where {T,N,perm,iperm}
function Base.mapreducedim!(f, op::CommutativeOps, B::AbstractArray{T,N}, A::PermutedDimsArray{T,N,perm,iperm}) where {T,N,perm,iperm}
C = PermutedDimsArray{T,N,iperm,perm,typeof(B)}(B) # make the inverse permutation for the output
Base.mapreducedim!(f, op, C, parent(A))
B
end
function Base.mapreducedim!(f::typeof(identity), op::Union{typeof(Base.mul_prod),typeof(*)}, B::AbstractArray{T,N}, A::PermutedDimsArray{<:Union{Real,Complex},N,perm,iperm}) where {N,perm,iperm}
C = PermutedDimsArray{T,N,iperm,perm,typeof(B)}(B) # make the inverse permutation for the output
Base.mapreducedim!(f, op, C, parent(A))
B
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1 change: 1 addition & 0 deletions stdlib/LinearAlgebra/src/LinearAlgebra.jl
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Expand Up @@ -20,6 +20,7 @@ using Base: IndexLinear, promote_eltype, promote_op, promote_typeof,
@propagate_inbounds, reduce, typed_hvcat, typed_vcat, require_one_based_indexing,
Splat
using Base.Broadcast: Broadcasted, broadcasted
using Base.PermutedDimsArrays: CommutativeOps
using OpenBLAS_jll
using libblastrampoline_jll
import Libdl
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3 changes: 1 addition & 2 deletions stdlib/LinearAlgebra/src/adjtrans.jl
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Expand Up @@ -378,8 +378,7 @@ Broadcast.broadcast_preserving_zero_d(f, tvs::Union{Number,TransposeAbsVec}...)


### reductions
# faster to sum the Array than to work through the wrapper (but only in commutative reduction ops)
const CommutativeOps = Union{typeof(+),typeof(Base.add_sum),typeof(min),typeof(max),typeof(Base._extrema_rf),typeof(|),typeof(&)}
# faster to sum the Array than to work through the wrapper (but only in commutative reduction ops as in Base/permuteddimsarray.jl)
Base._mapreduce_dim(f, op::CommutativeOps, init::Base._InitialValue, A::Transpose, dims::Colon) =
Base._mapreduce_dim(f∘transpose, op, init, parent(A), dims)
Base._mapreduce_dim(f, op::CommutativeOps, init::Base._InitialValue, A::Adjoint, dims::Colon) =
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6 changes: 5 additions & 1 deletion test/arrayops.jl
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Expand Up @@ -708,14 +708,18 @@ end
ap = PermutedDimsArray(Array(a), (2,1,3))
@test strides(ap) == (3,1,12)

for A in [rand(1,2,3,4),rand(2,2,2,2),rand(5,6,5,6),rand(1,1,1,1)]
for A in [rand(1,2,3,4),rand(2,2,2,2),rand(5,6,5,6),rand(1,1,1,1), [rand(ComplexF64, 2,2) for _ in 1:2, _ in 1:3, _ in 1:2, _ in 1:4]]
perm = randperm(4)
@test isequal(A,permutedims(permutedims(A,perm),invperm(perm)))
@test isequal(A,permutedims(permutedims(A,invperm(perm)),perm))

@test sum(permutedims(A,perm)) ≈ sum(PermutedDimsArray(A,perm))
@test sum(permutedims(A,perm), dims=2) ≈ sum(PermutedDimsArray(A,perm), dims=2)
@test sum(permutedims(A,perm), dims=(2,4)) ≈ sum(PermutedDimsArray(A,perm), dims=(2,4))

@test prod(permutedims(A,perm)) ≈ prod(PermutedDimsArray(A,perm))
@test prod(permutedims(A,perm), dims=2) ≈ prod(PermutedDimsArray(A,perm), dims=2)
@test prod(permutedims(A,perm), dims=(2,4)) ≈ prod(PermutedDimsArray(A,perm), dims=(2,4))
end

m = [1 2; 3 4]
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