/usr/include/gromacs/utility/basedefinitions.h is in libgromacs-dev 2018.1-1.
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* This file is part of the GROMACS molecular simulation package.
*
* Copyright (c) 1991-2000, University of Groningen, The Netherlands.
* Copyright (c) 2001-2004, The GROMACS development team.
* Copyright (c) 2013,2014,2015,2016,2017, by the GROMACS development team, led by
* Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
* and including many others, as listed in the AUTHORS file in the
* top-level source directory and at http://www.gromacs.org.
*
* GROMACS 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.
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/*! \file
* \brief
* Basic types and macros used throughout \Gromacs.
*
* \inpublicapi
* \ingroup module_utility
*/
#ifndef GMX_UTILITY_BASEDEFINITIONS_H
#define GMX_UTILITY_BASEDEFINITIONS_H
#include <stdint.h>
#ifndef _MSC_VER
#include <inttypes.h>
#endif
/*! \brief
* Boolean type for use in \Gromacs C code.
*
* There is no standard size for 'bool' in C++, so when
* we previously defined it to int for C code the data types
* (and structs) would have different size depending on your compiler,
* both at \Gromacs build time and when you use the library.
* The only way around this is to NOT assume anything about the C++ type,
* so we cannot use the name 'bool' in our C code anymore.
*/
typedef int gmx_bool;
#ifndef FALSE
/** False value for ::gmx_bool. */
# define FALSE 0
#endif
#ifndef TRUE
/** True value for ::gmx_bool. */
# define TRUE 1
#endif
/** Number of gmx_bool values. */
#define BOOL_NR 2
/*! \name Fixed-width integer types
*
* These types and macros provide the equivalent of 32- and 64-bit integer
* types from C99 headers `stdint.h` and `inttypes.h`. These headers are also
* there in C++11. The types and macros from here should be used instead of
* `int32_t` etc.
*
* (MSVC 2015 still doesn't support the format strings.)
*/
/*! \{ */
typedef int32_t gmx_int32_t;
typedef int64_t gmx_int64_t;
typedef uint32_t gmx_uint32_t;
typedef uint64_t gmx_uint64_t;
#ifdef _MSC_VER
#define GMX_PRId32 "I32d"
#define GMX_SCNd32 "I32d"
#define GMX_PRId64 "I64d"
#define GMX_SCNd64 "I64d"
#define GMX_PRIu32 "I32u"
#define GMX_SCNu32 "I32u"
#define GMX_PRIu64 "I64u"
#define GMX_SCNu64 "I64u"
#else
#define GMX_PRId32 PRId32
#define GMX_SCNd32 SCNd32
#define GMX_PRId64 PRId64
#define GMX_SCNd64 SCNd64
#define GMX_PRIu32 PRIu32
#define GMX_SCNu32 SCNu32
#define GMX_PRIu64 PRIu64
#define GMX_SCNu64 SCNu64
#endif
#define GMX_INT32_MAX INT32_MAX
#define GMX_INT32_MIN INT32_MIN
#define GMX_INT64_MAX INT64_MAX
#define GMX_INT64_MIN INT64_MIN
#define GMX_UINT32_MAX UINT32_MAX
#define GMX_UINT32_MIN UINT32_MIN
#define GMX_UINT64_MAX UINT64_MAX
#define GMX_UINT64_MIN UINT64_MIN
/*! \} */
/*! \def gmx_inline
* \brief
* Keyword to use in C code instead of C99 `inline`.
*
* Some of the C compilers we support do not recognize the C99 keyword
* `inline`. This macro should be used in C code and in shared C/C++ headers
* to indicate a function is inlined.
* C++ code should use plain `inline`, as that is already in C++98.
*/
#if !defined __cplusplus && defined _MSC_VER
#define gmx_inline __inline
#else
/* C++ or C99 */
#define gmx_inline inline
#endif
/* ICC, GCC, MSVC, Pathscale, PGI, XLC support __restrict.
* Any other compiler can be added here. */
/*! \brief
* Keyword to use in instead of C99 `restrict`.
*
* We cannot use `restrict` because it is only in C99, but not in C++.
* This macro should instead be used to allow easily supporting different
* compilers.
*/
#define gmx_restrict __restrict
/*! \def GMX_CXX11_COMPILATION
* \brief
* Defined to 1 when compiling as C++11.
*
* While \Gromacs only supports C++11 compilation, there are some parts of the
* code that are compiled with other tools than the actual C++ compiler, and
* these may not support C++11. Most notable such case is all of CUDA code
* (with CUDA versions older than 6.5), but other types of kernels might also
* have similar limitations in the future.
*
* The define is intended for conditional compilation in low-level headers that
* need to support inclusion from such non-C++11 files, but get significant
* benefit (e.g., for correctness checking or more convenient use) from C++11.
* It should only be used for features that do not influence the ABI of the
* header; e.g., static_asserts or additional helper methods.
*/
#if defined __cplusplus && __cplusplus >= 201103L
# define GMX_CXX11_COMPILATION 1
#else
# define GMX_CXX11_COMPILATION 0
#endif
/*! \def gmx_unused
* \brief
* Attribute to suppress compiler warnings about unused function parameters.
*
* This attribute suppresses compiler warnings about unused function arguments
* by marking them as possibly unused. Some arguments are unused but
* have to be retained to preserve a function signature
* that must match that of another function.
* Some arguments are only used in *some* conditional compilation code paths
* (e.g. MPI).
*/
#ifndef gmx_unused
#ifdef __GNUC__
/* GCC, clang, and some ICC pretending to be GCC */
# define gmx_unused __attribute__ ((unused))
#elif (defined(__INTEL_COMPILER) || defined(__ECC)) && !defined(_MSC_VER)
/* ICC on *nix */
# define gmx_unused __attribute__ ((unused))
#elif defined(__PGI)
/* Portland group compilers */
# define gmx_unused __attribute__ ((unused))
#elif defined _MSC_VER
/* MSVC */
# define gmx_unused /*@unused@*/
#elif defined(__xlC__)
/* IBM */
# define gmx_unused __attribute__ ((unused))
#else
# define gmx_unused
#endif
#endif
#ifndef __has_feature
/** For compatibility with non-clang compilers. */
#define __has_feature(x) 0
#endif
/*! \def gmx_noreturn
* \brief
* Indicate that a function is not expected to return.
*/
#ifndef gmx_noreturn
#if defined(__GNUC__) || __has_feature(attribute_analyzer_noreturn)
#define gmx_noreturn __attribute__((noreturn))
#elif defined (_MSC_VER)
#define gmx_noreturn __declspec(noreturn)
#else
#define gmx_noreturn
#endif
#endif
/*! \brief
* Macro to explicitly ignore an unused value.
*
* \ingroup module_utility
*/
#define GMX_UNUSED_VALUE(value) (void)value
#ifdef __cplusplus
namespace gmx
{
namespace internal
{
/*! \cond internal */
/*! \internal \brief
* Helper for ignoring values in macros.
*
* \ingroup module_utility
*/
template <typename T>
static inline void ignoreValueHelper(const T &)
{
}
//! \endcond
} // namespace internal
} // namespace gmx
/*! \brief
* Macro to explicitly ignore a return value of a call.
*
* Mainly meant for ignoring values of functions declared with
* `__attribute__((warn_unused_return))`. Makes it easy to find those places if
* they need to be fixed, and document the intent in cases where the return
* value really can be ignored. It also makes it easy to adapt the approach so
* that they don't produce warnings. A cast to void doesn't remove the warning
* in gcc, while adding a dummy variable can cause warnings about an unused
* variable.
*
* \ingroup module_utility
*/
#define GMX_IGNORE_RETURN_VALUE(call) \
::gmx::internal::ignoreValueHelper(call)
#endif
#endif
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