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view main/optim/inst/__bracket_min.m @ 9930:d30cfca46e8a octave-forge
optim: upgrade license to GPLv3+ and mention on DESCRIPTION the other package licenses
author | carandraug |
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date | Fri, 30 Mar 2012 15:14:48 +0000 |
parents | 6234c457a66d |
children | f82660cf7dee |
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## Copyright (C) 2002 Etienne Grossmann <etienne@isr.ist.utl.pt> ## Copyright (C) 2009 Levente Torok <TorokLev@gmail.com> ## ## 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/>. ## [a, b, ga, gb, nev] = semi_bracket (f, dx, a, narg, args) ## ## Find an interval containing a local minimum of the function ## g : h in reals ---> f (x+h*dx) where x = args{narg} ## ## a < b. ## nev is the number of function evaluations function [a, b, ga, gb, n] = __bracket_min (f, dx, narg, args) [a,b, ga,gb, n] = __semi_bracket (f, dx, 0, narg, args); if a != 0, return; end [a2,b2, ga2,gb2, n2] = __semi_bracket (f, -dx, 0, narg, args); n += n2; if a2 == 0, a = -b2; ga = gb2; else a = -b2; b = -a2; ga = gb2; gb = ga2; end