add vec method for RowVector (#23701)

JuliaLang · Sep 15, 2017 · 3477b88 · 3477b88
1 parent ac714a1
commit 3477b88
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Showing 3 changed files with 5 additions and 1 deletion.
diff --git a/base/linalg/linalg.jl b/base/linalg/linalg.jl
@@ -9,7 +9,7 @@ import Base: USE_BLAS64, abs, big, broadcast, ceil, conj, convert, copy, copy!,
     adjoint, eltype, exp, eye, findmax, findmin, fill!, floor, full, getindex,
     hcat, imag, indices, inv, isapprox, isone, IndexStyle, kron, length, log, map,
     ndims, oneunit, parent, power_by_squaring, print_matrix, promote_rule, real, round,
-    setindex!, show, similar, size, sqrt, transpose, trunc, typed_hcat
+    setindex!, show, similar, size, sqrt, transpose, trunc, typed_hcat, vec
 using Base: hvcat_fill, iszero, IndexLinear, _length, promote_op, promote_typeof,
     @propagate_inbounds, @pure, reduce, typed_vcat
 # We use `_length` because of non-1 indices; releases after julia 0.5

diff --git a/base/linalg/rowvector.jl b/base/linalg/rowvector.jl
@@ -83,6 +83,7 @@ julia> transpose(v)
 @inline adjoint(rowvec::RowVector{<:Real}) = rowvec.vec
 
 parent(rowvec::RowVector) = rowvec.vec
+vec(rowvec::RowVector) = rowvec.vec
 
 """
     conj(v::RowVector)

diff --git a/test/linalg/rowvector.jl b/test/linalg/rowvector.jl
@@ -49,6 +49,9 @@
 
     y = rand(Complex{Float64},3)
     @test sum(abs2, imag.(diag(y .+ y'))) < 1e-20
+
+    @test parent(rv) === v
+    @test vec(rv) === v
 end
 
 @testset "Diagonal ambiguity methods" begin