You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: pp_settings.m
    path of file: ./repos/spm/toolbox/Spatial
    
    the code of the file until where you have to start completion: function sett = pp_settings(deg,bnd,ext)
% Settings for push/pull
% FORMAT sett = pp_settings(deg,bnd,ext)
% deg - interpolation degree in each dimension (3 elements)
%       0 - nearest neighbour
%       1 - trilinear
%       2 - cubic B-spline
%       3 - 3rd degree B-spline
%       4 - 4th degree B-spline
% bnd - boundary conditions in each dimension (3 elements)
%       0 - circulant
%       1 - reflected
%       2 - reflected negative
% ext - extrapolation flag 0/1
%__________________________________________________________________________

% John Ashburner
% Copyright (C) 2023 Wellcome Centre for Human Neuroimaging



    
function sett = pp_settings(deg,bnd,ext)
% Settings for push/pull
% FORMAT sett = pp_settings(deg,bnd,ext)
% deg - interpolation degree in each dimension (3 elements)
%       0 - nearest neighbour
%       1 - trilinear
%       2 - cubic B-spline
%       3 - 3rd degree B-spline
%       4 - 4th degree B-spline
% bnd - boundary conditions in each dimension (3 elements)
%       0 - circulant
%       1 - reflected
%       2 - reflected negative
% ext - extrapolation flag 0/1
%__________________________________________________________________________

% John Ashburner
% Copyright (C) 2023 Wellcome Centre for Human Neuroimaging


if true
    usize = @uint64;
else
    usize = @uint32;
end