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Broadcast arithmetic operators for OneElement #331

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Merged
dlfivefifty merged 1 commit into from
Jan 3, 2024
Merged

Broadcast arithmetic operators for OneElement #331

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23 changes: 23 additions & 0 deletions src/oneelement.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -151,3 +151,26 @@ end

adjoint(A::OneElementMatrix) = OneElement(adjoint(A.val), reverse(A.ind), reverse(A.axes))
transpose(A::OneElementMatrix) = OneElement(transpose(A.val), reverse(A.ind), reverse(A.axes))

# broadcast
function broadcasted(::DefaultArrayStyle{N}, ::typeof(conj), r::OneElement{<:Any,N}) where {N}
OneElement(conj(r.val), r.ind, axes(r))
end
function broadcasted(::DefaultArrayStyle{N}, ::typeof(real), r::OneElement{<:Any,N}) where {N}
OneElement(real(r.val), r.ind, axes(r))
end
function broadcasted(::DefaultArrayStyle{N}, ::typeof(imag), r::OneElement{<:Any,N}) where {N}
OneElement(imag(r.val), r.ind, axes(r))
end
function broadcasted(::DefaultArrayStyle{N}, ::typeof(^), r::OneElement{<:Any,N}, x::Number) where {N}
OneElement(r.val^x, r.ind, axes(r))
end
function broadcasted(::DefaultArrayStyle{N}, ::typeof(*), r::OneElement{<:Any,N}, x::Number) where {N}
OneElement(r.val*x, r.ind, axes(r))
end
function broadcasted(::DefaultArrayStyle{N}, ::typeof(/), r::OneElement{<:Any,N}, x::Number) where {N}
OneElement(r.val/x, r.ind, axes(r))
end
function broadcasted(::DefaultArrayStyle{N}, ::typeof(\), x::Number, r::OneElement{<:Any,N}) where {N}
OneElement(x \ r.val, r.ind, axes(r))
end
14 changes: 14 additions & 0 deletions test/runtests.jl
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Expand Up @@ -2218,6 +2218,20 @@ end
@test A * (2 + 3.0im) === OneElement(val * (2 + 3.0im), (2,2), (3,4)) == B * (2 + 3.0im)
@test A / (2 + 3.0im) === OneElement(val / (2 + 3.0im), (2,2), (3,4)) == B / (2 + 3.0im)
end

@testset "broadcasting" begin
for v in (OneElement(2, 3, 4), OneElement(2im, (1,2), (3,4)))
w = Array(v)
n = 2
@test real.(v) == real.(w)
@test imag.(v) == imag.(w)
@test conj.(v) == conj.(w)
@test v .^ n == w .^ n
@test v .* n == w .* n
@test v ./ n == w ./ n
@test n .\ v == n .\ w
end
end
end

@testset "repeat" begin
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