function testcode
warning('off', 'MATLAB:timeit:HighOverhead');
nrows = 10;
niter = 1;
asdf = rand(nrows,2);

shift = zeros(niter, 3);
for ii = 1:niter
    fh_A = @() A(asdf);
    shift(ii, 1) = timeit(fh_A);

    fh_B = @() B(asdf);
    shift(ii, 2) = timeit(fh_B);

    fh_C = @() C(asdf);
    shift(ii, 3) = timeit(fh_C);
end
fprintf('Current:   %f seconds\ncircshift: %f seconds\ninline:    %f seconds\n\n', mean(shift, 1))

idx = 5;
row = [NaN, NaN];

insert = zeros(niter, 3);
for ii = 1:niter
    fh_D = @() D(asdf, idx, row);
    insert(ii, 1) = timeit(fh_D);

    fh_E = @() E(asdf, idx, row);
    insert(ii, 2) = timeit(fh_E);

    fh_F = @() F(asdf, idx, row);
    insert(ii, 3) = timeit(fh_F);
end
fprintf('Current: %f seconds\nInline:  %f seconds\nFEX:     %f seconds\n\n', mean(insert, 1))

warning('on', 'MATLAB:timeit:HighOverhead');
end

function in = A(in)
in = [ in(2:end,:) ; [ Inf Inf ] ];
end

function in = B(in)
in = circshift(in, -1, 1);
in(end,:) = Inf;
end

function in = C(in)
in(1:end-1) = in(2:end);
in(end,:) = Inf;
end

function in = D(in, idx, row)
in = [ in(1:(idx - 1),:) ; row ; in(idx:(end - 1),:) ];
end

function in = E(in, idx, row)
in((idx + 1):end, :) = in(idx:(end-1), :);
in(idx, :) = row;
end

function in = F(in, idx, row)
ind = [1:size(in, 1) idx-1];
[~, ind] = sort(ind);
in = [in; row];
in = in(ind,:);
in(end,:) = [];
end