Weird behavior of transposes and TriangularToeplitz

[riccardosven]

Multiplying a vector by a lower triangular Toeplitz matrix gives weird results when associated with transposition:

g = [1.; 2.; 3.]
u = TriangularToeplitz([1.; 1.; 1.], :L)

then

g'*u
1×3 RowVector{Float64,Array{Float64,1}}:
 6.0  5.0  3.0

but

g'*u
1×3 RowVector{Float64,Array{Float64,1}}:
 3.0  2.0  0.0

Similarly

u.'*g
3-element Array{Float64,1}:
 3.0
 2.0
 0.0

u*g
3-element Array{Float64,1}:
 1.0
 3.0
 6.0

[andreasnoack]

Thanks for reporting. The methods here predates the RowVector so I'm not sure what this dispatches to. I'll take a look.

[riccardosven]

I've tried following the chain of calls, but I'm just a Julia beginner :)
I believe it is something in A_mul_B! as it also happens in conjunction to normal vector-matrix multiplication (not only with RowVector.

[dkarrasch]

I couldn't find an issue even with the currently released version, even more so since I don't understand where the issue should come from: two different results are reported for the exact same call g'*u. So I think this can be closed.