gather! misses the multi index method #626
Description
For gather you have the multi-index version
julia> using SparseArray, NNlin
julia> s = [1, 2, 3];
julia> t = [2, 3, 1];
julia> A = collect(sparse(s, t, [1.0, 1.0, 1.0], 3, 3))
3×3 Matrix{Float64}:
0.0 1.0 0.0
0.0 0.0 1.0
1.0 0.0 0.0
julia> w = NNlib.gather(A, s, t)
3-element Vector{Float64}:
1.0
1.0
1.0For the mutating version gather! instead, the method is missing
w = [0.0, 0.0, 0.0]
NNlib.gather!(w, A, s, t) # method ERROR