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1 /*
2  * Copyright (c) 2001-2017 The strace developers.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. The name of the author may not be used to endorse or promote products
14  *    derived from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  */
27 
28 #ifndef STRACE_MACROS_H
29 #define STRACE_MACROS_H
30 
31 #include "gcc_compat.h"
32 
33 #define ARRAY_SIZE(a_)	(sizeof(a_) / sizeof((a_)[0]) + MUST_BE_ARRAY(a_))
34 
35 #define STRINGIFY(...)		#__VA_ARGS__
36 #define STRINGIFY_VAL(...)	STRINGIFY(__VA_ARGS__)
37 
38 #ifndef MAX
39 # define MAX(a, b)		(((a) > (b)) ? (a) : (b))
40 #endif
41 #ifndef MIN
42 # define MIN(a, b)		(((a) < (b)) ? (a) : (b))
43 #endif
44 #define CLAMP(val, min, max)	MIN(MAX(min, val), max)
45 
46 #ifndef offsetofend
47 # define offsetofend(type_, member_)	\
48 	(offsetof(type_, member_) + sizeof(((type_ *)0)->member_))
49 #endif
50 
51 #endif /* !STRACE_MACROS_H */
52