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28 #ifndef _C99_COMPAT_H_
29 #define _C99_COMPAT_H_
37 * Visual Studio 2012 will complain if we define the `inline` keyword, but
38 * actually it only supports the keyword on C++.
40 * We could skip this check by defining _ALLOW_KEYWORD_MACROS, but there is
41 * probably value in checking this for other keywords. So simply include
42 * the checking before we define it below.
45 # include <xkeycheck.h>
49 * XXX: MSVC has a `__restrict` keyword, but it also has a
50 * `__declspec(restrict)` modifier, so it is impossible to define a
51 * `restrict` macro without interfering with the latter. Furthermore the
52 * MSVC standard library uses __declspec(restrict) under the _CRTRESTRICT
53 * macro. For now resolve this issue by redefining _CRTRESTRICT, but going
54 * forward we should probably should stop using restrict, especially
55 * considering that our code does not obbey strict aliasing rules any way.
68 /* C++ supports inline keyword */
69 # elif defined(__GNUC__)
70 # define inline __inline__
71 # elif defined(_MSC_VER)
72 # define inline __inline
74 # define inline __inline
75 # elif defined(__INTEL_COMPILER)
76 /* Intel compiler supports inline keyword */
77 # elif defined(__WATCOMC__) && (__WATCOMC__ >= 1100)
78 # define inline __inline
79 # elif defined(__SUNPRO_C) && defined(__C99FEATURES__)
80 /* C99 supports inline keyword */
81 # elif (__STDC_VERSION__ >= 199901L)
82 /* C99 supports inline keyword */
90 * C99 restrict keyword
93 * - http://cellperformance.beyond3d.com/articles/2006/05/demystifying-the-restrict-keyword.html
96 # if (__STDC_VERSION__ >= 199901L)
98 # elif defined(__SUNPRO_C) && defined(__C99FEATURES__)
100 # elif defined(__GNUC__)
101 # define restrict __restrict__
102 # elif defined(_MSC_VER)
103 # define restrict __restrict
105 # define restrict /* */
114 # if (__STDC_VERSION__ >= 199901L)
116 # elif defined(__SUNPRO_C) && defined(__C99FEATURES__)
118 # elif defined(__GNUC__)
120 # define __func__ __FUNCTION__
122 # define __func__ "<unknown>"
124 # elif defined(_MSC_VER)
125 # if _MSC_VER >= 1300
126 # define __func__ __FUNCTION__
128 # define __func__ "<unknown>"
131 # define __func__ "<unknown>"
136 /* Simple test case for debugging */
138 static inline const char *
139 test_c99_compat_h(const void * restrict a
,
140 const void * restrict b
)
147 #endif /* _C99_COMPAT_H_ */