/usr/share/octave/packages/nurbs-1.3.10/vecmag.m is in octave-nurbs 1.3.10-1.
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 | function mag = vecmag(vec)
%
% VECMAG: Magnitude of the vectors.
%
% Calling Sequence:
%
% mvec = vecmag(vec)
%
% INPUT:
%
% vec : An array of column vectors represented by a matrix of
% size (dim,nv), where is the dimension of the vector and
% nv the number of vectors.
%
% OUTPUT:
%
% mvec : Magnitude of the vectors, vector of size (1,nv).
%
% Description:
%
% Determines the magnitude of the vectors.
%
% Examples:
%
% Find the magnitude of the two vectors (0.0,2.0,1.3) and (1.5,3.4,2.3)
%
% mvec = vecmag([0.0 1.5; 2.0 3.4; 1.3 2.3]);
%
% Copyright (C) 2000 Mark Spink
%
% 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/>.
mag = sqrt(sum(vec.^2));
end
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