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geant4/source/externals/clhep/include/CLHEP/Utility/use_atomic.h
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2016-06-30 14:12:05 +02:00

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616 B
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#ifndef CLHEP_USE_ATOMIC_GUARD_H
#define CLHEP_USE_ATOMIC_GUARD_H
// ======================================================================
//
// Use std::atomic when the compiler declares it uses the C++11 standard
//
// ======================================================================
#if (defined (G4MULTITHREADED))
#if __cplusplus >= 201103L
#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 7)
#include <atomic>
#define CLHEP_USE_ATOMIC
#elif __clang__
#if __has_feature(c_atomic)
#include <atomic>
#define CLHEP_USE_ATOMIC
#endif
#endif
#endif
#endif
#endif