1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
/*
* cynapses libc functions
*
* Copyright (c) 2008-2013 by Andreas Schneider <asn@cryptomilk.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file c_macro.h
*
* @brief cynapses libc macro definitions
*
* @defgroup cynMacroInternals cynapses libc macro definitions
* @ingroup cynLibraryAPI
*
* @{
*/
#ifndef _C_MACRO_H
#define _C_MACRO_H
#include <stdint.h>
#include <string.h>
#define INT_TO_POINTER(i) (void *) i
#define POINTER_TO_INT(p) *((int *) (p))
/** Zero a structure */
#define ZERO_STRUCT(x) memset((char *)&(x), 0, sizeof(x))
/** Zero a structure given a pointer to the structure */
#define ZERO_STRUCTP(x) do { if ((x) != NULL) memset((char *)(x), 0, sizeof(*(x))); } while(0)
/** Free memory and zero the pointer */
#define SAFE_FREE(x) do { if ((x) != NULL) {free((void*)x); x=NULL;} } while(0)
/** Get the smaller value */
#define MIN(a,b) ((a) < (b) ? (a) : (b))
/** Get the bigger value */
#define MAX(a,b) ((a) < (b) ? (b) : (a))
/** Get the size of an array */
#define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
/**
* This is a hack to fix warnings. The idea is to use this everywhere that we
* get the "discarding const" warning by the compiler. That doesn't actually
* fix the real issue, but marks the place and you can search the code for
* discard_const.
*
* Please use this macro only when there is no other way to fix the warning.
* We should use this function in only in a very few places.
*
* Also, please call this via the discard_const_p() macro interface, as that
* makes the return type safe.
*/
#define discard_const(ptr) ((void *)((uintptr_t)(ptr)))
/**
* Type-safe version of discard_const
*/
#define discard_const_p(type, ptr) ((type *)discard_const(ptr))
#if (__GNUC__ >= 3)
# ifndef likely
# define likely(x) __builtin_expect(!!(x), 1)
# endif
# ifndef unlikely
# define unlikely(x) __builtin_expect(!!(x), 0)
# endif
#else /* __GNUC__ */
# ifndef likely
# define likely(x) (x)
# endif
# ifndef unlikely
# define unlikely(x) (x)
# endif
#endif /* __GNUC__ */
/**
* }@
*/
#ifdef _WIN32
/* missing errno codes on mingw */
#ifndef ENOTBLK
#define ENOTBLK 15
#endif
#ifndef ETXTBSY
#define ETXTBSY 26
#endif
#ifndef ENOBUFS
#define ENOBUFS WSAENOBUFS
#endif
#endif /* _WIN32 */
#endif /* _C_MACRO_H */
|
