MATLAB: How gpuArray.randperm is implemented

randperm

I looked in to the docs but it doesn't have any reference to the algorithm.

Thank you.

randperm calls

   [~,p] = sort(rand(1,N))

but obviously does everything on the GPU.

None of MATLAB's build methods (the zeros, ones family) build complex arrays, so the nearest you can get is to do something like:

complex(zeros(3, 'gpuArray'))

which never allocates any host memory, and results in a complex gpuArray.