Mercurial > octave
view scripts/linear-algebra/orth.m @ 31222:1a0756f7c90a
disable experimental terminal widget when building without qscintilla
* command-widget.cc: inlcude into #if defined (HAVE_QSCINTILLA)
* main-window.cc: include command-widget.h only if HAVE_QSCINTILLA
* module.mk: only build moc-command-widget.cc if HAVE_QSCINTILLA
* octave-qobject.cc: include command-widget.h only if HAVE_QSCINTILLA,
(base_qobject::terminal_widget): use conditional compilation where
referring to new terminal widget
* terminal-dock-widget.cc: include command-widget.h only if HAVE_QSCINTILLA,
(terminal_dock_widget, init_command_prompt): use conditional compilation
where referring to new terminal widget
* terminal-dock-widget.h: use conditional compilation where referring to
new terminal widget Thu Sep 01 02:34:37 2022 +0200
* octave.cc (cmdline_options): only return true on experimental terminal
widget option if built with scintilla
author | Torsten Lilge <ttl-octave@mailbox.org> |
---|---|
date | Sat, 03 Sep 2022 00:18:49 +0200 |
parents | 5d3faba0342e |
children | 597f3ee61a48 |
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######################################################################## ## ## Copyright (C) 1994-2022 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this ## distribution or <https://octave.org/copyright/>. ## ## This file is part of Octave. ## ## Octave 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. ## ## Octave 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 Octave; see the file COPYING. If not, see ## <https://www.gnu.org/licenses/>. ## ######################################################################## ## -*- texinfo -*- ## @deftypefn {} {@var{B} =} orth (@var{A}) ## @deftypefnx {} {@var{B} =} orth (@var{A}, @var{tol}) ## Return an orthonormal basis of the range space of @var{A}. ## ## The dimension of the range space is taken as the number of singular values ## of @var{A} greater than @var{tol}. If the argument @var{tol} is missing, it ## is computed as ## ## @example ## max (size (@var{A})) * max (svd (@var{A})) * eps ## @end example ## @seealso{null} ## @end deftypefn function B = orth (A, tol) if (nargin < 1) print_usage (); endif if (isempty (A)) B = []; return; endif [U, S, V] = svd (A); [rows, cols] = size (A); [S_nr, S_nc] = size (S); if (S_nr == 1 || S_nc == 1) s = S(1); else s = diag (S); endif if (nargin == 1) if (isa (A, "single")) tol = max (size (A)) * s (1) * eps ("single"); else tol = max (size (A)) * s (1) * eps; endif endif rank = sum (s > tol); if (rank > 0) B = -U(:, 1:rank); else B = zeros (rows, 0); endif endfunction %!test %! for i = 1:20 %! A = rand (10, 10); %! V = orth (A); %! if (det (A) != 0) %! assert (V'*V, eye (10), 100*eps); %! endif %! endfor