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39 * Basic types and macros used throughout \Gromacs.
42 * \ingroup module_utility
44 #ifndef GMX_UTILITY_BASEDEFINITIONS_H
45 #define GMX_UTILITY_BASEDEFINITIONS_H
47 /* Information about integer data type sizes */
49 #define __STDC_LIMIT_MACROS
52 #define __STDC_FORMAT_MACROS
57 * Boolean type for use in \Gromacs C code.
59 * There is no standard size for 'bool' in C++, so when
60 * we previously defined it to int for C code the data types
61 * (and structs) would have different size depending on your compiler,
62 * both at \Gromacs build time and when you use the library.
63 * The only way around this is to NOT assume anything about the C++ type,
64 * so we cannot use the name 'bool' in our C code anymore.
69 /** False value for ::gmx_bool. */
73 /** True value for ::gmx_bool. */
76 /** Number of gmx_bool values. */
79 /*! \name Fixed-width integer types
81 * These types and macros provide the equivalent of 32- and 64-bit integer
82 * types from C99 headers `stdint.h` and `inttypes.h`. These headers are also
83 * there in C++11. The types and macros from here should be used instead of
85 * MSVC doesn't support these before Visual Studio 2013.
89 typedef __int32 gmx_int32_t;
90 #define GMX_PRId32 "I32d"
91 #define GMX_SCNd32 "I32d"
93 typedef __int64 gmx_int64_t;
94 #define GMX_PRId64 "I64d"
95 #define GMX_SCNd64 "I64d"
97 typedef unsigned __int32 gmx_uint32_t;
98 #define GMX_PRIu32 "I32u"
99 #define GMX_SCNu32 "I32u"
101 typedef unsigned __int64 gmx_uint64_t;
102 #define GMX_PRIu64 "I64u"
103 #define GMX_SCNu64 "I64u"
105 typedef int32_t gmx_int32_t;
106 #define GMX_PRId32 PRId32
107 #define GMX_SCNd32 SCNd32
109 typedef int64_t gmx_int64_t;
110 #define GMX_PRId64 PRId64
111 #define GMX_SCNd64 SCNd64
113 typedef uint32_t gmx_uint32_t;
114 #define GMX_PRIu32 PRIu32
115 #define GMX_SCNu32 SCNu32
117 typedef uint64_t gmx_uint64_t;
118 #define GMX_PRIu64 PRIu64
119 #define GMX_SCNu64 SCNu64
122 #define GMX_INT32_MAX INT32_MAX
123 #define GMX_INT32_MIN INT32_MIN
125 #define GMX_INT64_MAX INT64_MAX
126 #define GMX_INT64_MIN INT64_MIN
128 #define GMX_UINT32_MAX UINT32_MAX
129 #define GMX_UINT32_MIN UINT32_MIN
131 #define GMX_UINT64_MAX UINT64_MAX
132 #define GMX_UINT64_MIN UINT64_MIN
137 * Keyword to use in C code instead of C99 `inline`.
139 * Some of the C compilers we support do not recognize the C99 keyword
140 * `inline`. This macro should be used in C code and in shared C/C++ headers
141 * to indicate a function is inlined.
142 * C++ code should use plain `inline`, as that is already in C++98.
144 #if !defined __cplusplus && _MSC_VER
145 #define gmx_inline __inline
148 #define gmx_inline inline
151 /* ICC, GCC, MSVC, Pathscale, PGI, XLC support __restrict.
152 * Any other compiler can be added here. */
154 * Keyword to use in instead of C99 `restrict`.
156 * We cannot use `restrict` because it is only in C99, but not in C++.
157 * This macro should instead be used to allow easily supporting different
160 #define gmx_restrict __restrict
162 /*! \def gmx_cxx_const
164 * Keyword to work around C/C++ differences in possible const keyword usage.
166 * Some functions that do not modify their input parameters cannot declare
167 * those parameters as `const` and compile warning/error-free on both C and C++
168 * compilers because of differences in `const` semantics. This macro can be
169 * used in cases where C++ allows `const`, but C does not like it, to make the
170 * same declaration work for both.
173 #define gmx_cxx_const const
175 #define gmx_cxx_const
180 * Attribute to suppress compiler warnings about unused function parameters.
182 * This attribute suppresses compiler warnings about unused function arguments
183 * by marking them as possibly unused. Some arguments are unused but
184 * have to be retained to preserve a function signature
185 * that must match that of another function.
186 * Some arguments are only used in *some* conditional compilation code paths
191 /* GCC, clang, and some ICC pretending to be GCC */
192 # define gmx_unused __attribute__ ((unused))
193 #elif (defined(__INTEL_COMPILER) || defined(__ECC)) && !defined(_MSC_VER)
195 # define gmx_unused __attribute__ ((unused))
197 /* Portland group compilers */
198 # define gmx_unused __attribute__ ((unused))
199 #elif defined _MSC_VER
201 # define gmx_unused /*@unused@*/
202 #elif defined(__xlC__)
204 # define gmx_unused __attribute__ ((unused))