Mercurial > octave
view libinterp/corefcn/display.cc @ 20909:03e4ddd49396
omit unnecessary nargout checks
* paramdemo.cc, __ichol__.cc, __ilu__.cc, balance.cc, dassl.cc,
eig.cc, ellipj.cc, filter.cc, givens.cc, hess.cc, lsode.cc, lu.cc,
mgorth.cc, nproc.cc, pr-output.cc, quad.cc, quadcc.cc, sylvester.cc,
urlwrite.cc, variables.cc, ccolamd.cc, colamd.cc, qr.cc: Don't call
print_usage based on value of nargout. If nargout doesn't alter
function behavior and returning extra values is inexpensive, simply
return them instead of checking nargout.
author | John W. Eaton <jwe@octave.org> |
---|---|
date | Wed, 16 Dec 2015 11:41:11 -0500 |
parents | 7ac907da9fba |
children | e74e617060cf |
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/* Copyright (C) 2009-2015 John W. Eaton 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 <http://www.gnu.org/licenses/>. */ #ifdef HAVE_CONFIG_H #include <config.h> #endif #include "singleton-cleanup.h" #include "cdisplay.h" #include "display.h" #include "error.h" display_info *display_info::instance = 0; void display_info::init (bool query) { if (query) { int avail = 0; const char *msg = octave_get_display_info (&ht, &wd, &dp, &rx, &ry, &avail); dpy_avail = avail; if (msg) err_msg = msg; } } bool display_info::instance_ok (bool query) { bool retval = true; if (! instance) { instance = new display_info (query); if (instance) singleton_cleanup_list::add (cleanup_instance); } if (! instance) { error ("unable to create display_info object!"); retval = false; } return retval; }