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annotate src/display-available.h @ 21213:f7d1050b9b53

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maint: Clean up various usages of #ifdef. * randmtzig.c: Use #ifdef rather than just #if. * EditControl.h : Use '#if ! defined' rather than '#ifndef' in guard block to match Octave style. * dialog.cc, settings-dialog.cc: Add FIXME notes about questionable use of #if mechanism. * file-editor-tab.cc, Array-b.cc, Array-ch.cc, Array-d.cc, Array-f.cc, Array-i.cc, Array-s.cc, MatrixType.h, quit.h, lo-sysdep.cc, lo-cutils.c, oct-alloc.h, oct-shlib.cc, sparse-sort.h: #define HAVE_XXX macros to 1, not just empty but defined. * octave-txt-lexer.h, octave-cmd.h, octave-preserve-stream-state.h, txt-eng.h, zfstream.h, oct-conf-features.h, oct-conf.h: Use octave_ namespace prefix on name of #define used to prevent multiple inclusion of headers. * parser.h, webinfo.h, ov-oncleanup.h, op-int.h, display-available.h, shared-fcns.h: Add #define guard to prevent multiple inclusion. * quadcc.cc: use all capitals for #define MIN_CQUAD_HEAPSIZE. * ov-intx.h: Add note that this file must not use guard #define. * eigs-base.h, randmtzig.h: Write '! defined' rather than '!defined'. * file-ops.cc, oct-sparse.h: Use parentheses around complex #if tests. * oct-syscalls.cc, oct-base64.cc, statdefs.h: Indent #ifdef blocks correctly. * oct-conf-post.in.h: Use "! defined". Define macros to 1, not just empty but defined.
author Rik <rik@octave.org>
date Sat, 06 Feb 2016 18:22:32 -0800
parents f7121e111991
children aba2e6293dd8
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2
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3 Copyright (C) 2012-2015 John W. Eaton
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 3 of the License, or (at your
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10 option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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15 for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 #if ! defined (octave_display_available_h)
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24 #define octave_display_available_h 1
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25
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26 #ifdef __cplusplus
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27 # include <new>
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28 extern "C" {
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29 #endif
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30
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31 extern const char *display_available (int *dpy_avail);
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32
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33 #ifdef __cplusplus
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34 }
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35 #endif
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36
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37 #endif