/usr/share/octave/site/m/sundialsTB/nvector/N_VMaxNorm.m is in octave-sundials 2.5.0-3+b1.
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 | function ret = N_VMaxNorm(x, comm)
%N_VMaxNorm returns the L-infinity norm of x
%
% Usage: RET = N_VMaxNorm ( X [, COMM] )
%
%If COMM is not present, N_VMaxNorm returns the L-infinity norm
%of the local portion of X. Otherwise, it returns the global
%L-infinity norm..
% Radu Serban <radu@llnl.gov>
% Copyright (c) 2005, The Regents of the University of California.
% $Revision: 1.1 $Date: 2006/01/06 19:00:10 $
if nargin == 1
ret = norm(x,'inf');
else
lnrm = norm(x,'inf');
gnrm = 0.0;
MPI_Allreduce(lnrm,gnrm,'MAX',comm);
ret = gnrm;
end
|