tuple_element.h
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1 /*
2  * This file is part of ArmarX.
3  *
4  * Copyright (C) 2011-2016, High Performance Humanoid Technologies (H2T), Karlsruhe Institute of Technology (KIT), all rights reserved.
5  *
6  * ArmarX is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2 as
8  * published by the Free Software Foundation.
9  *
10  * ArmarX is distributed in the hope that it will be useful, but
11  * WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with this program. If not, see <http://www.gnu.org/licenses/>.
17  *
18  * @package ArmarXCore
19  * @author Raphael Grimm ( raphael dot grimm at kit dot edu)
20  * @date 2016
21  * @copyright http://www.gnu.org/licenses/gpl-2.0.txt
22  * GNU General Public License
23  */
24 #pragma once
25 
26 /**
27  * @brief Expands the given parameters and returns the first
28  * \ingroup CPreprocessor
29  */
30 #define ARMARX_FIRST_PARAMETER(...) ARMARX_FIRST_PARAMETER_IMPL(__VA_ARGS__, )
31 #define ARMARX_FIRST_PARAMETER_IMPL(x1, ...) x1
32 
33 /**
34  * @brief Expands the given parameters and returns the second
35  * \ingroup CPreprocessor
36  */
37 #define ARMARX_SECOND_PARAMETER(...) ARMARX_SECOND_PARAMETER_IMPL(__VA_ARGS__, )
38 #define ARMARX_SECOND_PARAMETER_IMPL(x1, x2, ...) x2
39 
40 /**
41  * @brief Expands the given parameters and returns the third
42  * \ingroup CPreprocessor
43  */
44 #define ARMARX_THIRD_PARAMETER(...) ARMARX_THIRD_PARAMETER_IMPL(__VA_ARGS__, , )
45 #define ARMARX_THIRD_PARAMETER_IMPL(x1, x2, x3, ...) x3