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RFC: Allow cu to operate on Array types #522

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Dec 20, 2019
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RFC: Allow cu to operate on Array types #522

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fea9d56
Allow cu to operate on Array types
baggepinnen Nov 29, 2019
6410a82
Make cu return concrete type if possible
baggepinnen Nov 29, 2019
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2 changes: 2 additions & 0 deletions src/array.jl
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Original file line number Diff line number Diff line change
Expand Up @@ -286,6 +286,8 @@ end
## utilities

cu(xs) = adapt(CuArray{Float32}, xs)
cu(::Type{Array{T,N}}) where {T,N} = CuArray{T,N,Nothing}
cu(::Type{Array{T}}) where {T} = CuArray{T}
Base.getindex(::typeof(cu), xs...) = CuArray([xs...])

zeros(T::Type, dims...) = fill!(CuArray{T}(undef, dims...), 0)
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3 changes: 3 additions & 0 deletions test/base.jl
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Expand Up @@ -39,6 +39,9 @@ end
@test cu(1:3) === 1:3
@test Base.elsize(xs) == sizeof(Int)
@test CuArray{Int, 2}(xs) === xs
@test cu(Array{Float64,1}) == CuArray{Float64,1, Nothing}
@test cu(Array{Float64,4}) == CuArray{Float64,4, Nothing}
@test cu(Array{Float64}) == CuArray{Float64}

@test_throws ArgumentError Base.unsafe_convert(Ptr{Int}, xs)
@test_throws ArgumentError Base.unsafe_convert(Ptr{Float32}, xs)
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