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3 * Copyright 2007-2013 VMware, Inc.
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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 * To avoid this the _ALLOW_KEYWORD_MACROS must be set.
42 # if (_MSC_VER >= 1700) && !defined(_ALLOW_KEYWORD_MACROS)
43 # define _ALLOW_KEYWORD_MACROS
47 * XXX: MSVC has a `__restrict` keyword, but it also has a
48 * `__declspec(restrict)` modifier, so it is impossible to define a
49 * `restrict` macro without interfering with the latter. Furthermore the
50 * MSVC standard library uses __declspec(restrict) under the _CRTRESTRICT
51 * macro. For now resolve this issue by redefining _CRTRESTRICT, but going
52 * forward we should probably should stop using restrict, especially
53 * considering that our code does not obbey strict aliasing rules any way.
66 /* C++ supports inline keyword */
67 # elif defined(__GNUC__)
68 # define inline __inline__
69 # elif defined(_MSC_VER)
70 # define inline __inline
72 # define inline __inline
73 # elif defined(__INTEL_COMPILER)
74 /* Intel compiler supports inline keyword */
75 # elif defined(__WATCOMC__) && (__WATCOMC__ >= 1100)
76 # define inline __inline
77 # elif defined(__SUNPRO_C) && defined(__C99FEATURES__)
78 /* C99 supports inline keyword */
79 # elif (__STDC_VERSION__ >= 199901L)
80 /* C99 supports inline keyword */
88 * C99 restrict keyword
91 * - http://cellperformance.beyond3d.com/articles/2006/05/demystifying-the-restrict-keyword.html
94 # if (__STDC_VERSION__ >= 199901L)
96 # elif defined(__SUNPRO_C) && defined(__C99FEATURES__)
98 # elif defined(__GNUC__)
99 # define restrict __restrict__
100 # elif defined(_MSC_VER)
101 # define restrict __restrict
103 # define restrict /* */
112 # if (__STDC_VERSION__ >= 199901L)
114 # elif defined(__SUNPRO_C) && defined(__C99FEATURES__)
116 # elif defined(__GNUC__)
118 # define __func__ __FUNCTION__
120 # define __func__ "<unknown>"
122 # elif defined(_MSC_VER)
123 # if _MSC_VER >= 1300
124 # define __func__ __FUNCTION__
126 # define __func__ "<unknown>"
129 # define __func__ "<unknown>"
134 /* Simple test case for debugging */
136 static inline const char *
137 test_c99_compat_h(const void * restrict a,
138 const void * restrict b)
145 #endif /* _C99_COMPAT_H_ */