/usr/share/octave/packages/quaternion-2.2.2/@quaternion/get.m is in octave-quaternion 2.2.2-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 | ## Copyright (C) 2010-2014 Lukas F. Reichlin
##
## This program is free software: you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program. If not, see <http://www.gnu.org/licenses/>.
## -*- texinfo -*-
## @deftypefn {Function File} {} get (@var{q})
## @deftypefnx {Function File} {@var{value} =} get (@var{q}, @var{"key"})
## @deftypefnx {Function File} {[@var{val1}, @var{val2}, @dots{}] =} get (@var{q}, @var{"key1"}, @var{"key2"}, @dots{})
## Access key values of quaternion objects.
##
## @strong{Keys}
## @table @var
## @item w
## Return scalar part @var{w} of quaternion @var{q} as a built-in type.
##
## @item x, y, z
## Return component @var{x}, @var{y} or @var{z} of the vector part of
## quaternion @var{q} as a built-in type.
##
## @item s
## Return scalar part of quaternion @var{q}. The vector part of @var{q}
## is set to zero.
##
## @item v
## Return vector part of quaternion @var{q}. The scalar part of @var{q}
## is set to zero.
## @end table
## @end deftypefn
## Author: Lukas Reichlin <lukas.reichlin@gmail.com>
## Created: April 2014
## Version: 0.1
function varargout = get (q, varargin)
if (! isa (q, "quaternion"))
error ("quaternion: get: first argument must be a quaternion");
endif
if (! all (cellfun (@ischar, varargin)))
error ("quaternion: get: key names must be strings");
endif
if (nargin == 1)
[keys, vals] = keys_vals (q);
nrows = numel (keys);
str = strjust (strvcat (keys), "right");
str = horzcat (repmat (" ", nrows, 1), str, repmat (": ", nrows, 1), strvcat (vals));
disp (str);
else
for k = 1 : (nargin-1)
key = varargin{k};
idx = substruct (".", key);
varargout{k} = subsref (q, idx);
endfor
endif
endfunction
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