CLHEP
2.4.7.1
C++ Class Library for High Energy Physics
CLHEP
Utility
atomic_int.h
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#ifndef CLHEP_ATOMIC_INT_H
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#define CLHEP_ATOMIC_INT_H
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// ======================================================================
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//
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// Use std::atomic when the compiler declares it uses the C++11 standard
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//
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// on macOS, atomic is available starting with Sierra (Darwin 16)
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// ======================================================================
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#if _WIN32
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#include <atomic>
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#define CLHEP_ATOMIC_INT_TYPE std::atomic<int>
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#else
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#if __cplusplus >= 201103L
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#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ > 7) || __clang__
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#include <atomic>
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#define CLHEP_ATOMIC_INT_TYPE std::atomic<int>
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#else
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#define CLHEP_ATOMIC_INT_TYPE int
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#endif
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#else
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#define CLHEP_ATOMIC_INT_TYPE int
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#endif
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#endif
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#endif
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