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made HashFnv functions constexpr (#4640)

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* added FLATBUFFERS_CONSTEXPR_CPP14 define for C++14 and above constexpr

* made HashFnv functions constexpr (depending on FLATBUFFERS_CONSTEXPR)
This commit is contained in:
Christian Helmich
2018-03-03 02:13:55 +09:00
committed by Wouter van Oortmerssen
parent 48d8232584
commit ec74f58b94
2 changed files with 11 additions and 4 deletions
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7
include/flatbuffers/base.h
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@@ -121,6 +121,13 @@
#define FLATBUFFERS_CONSTEXPR
#endif
#if (defined(__cplusplus) && __cplusplus >= 201402L) || \
(defined(__cpp_constexpr) && __cpp_constexpr >= 201304)
#define FLATBUFFERS_CONSTEXPR_CPP14 FLATBUFFERS_CONSTEXPR
#else
#define FLATBUFFERS_CONSTEXPR_CPP14
#endif
#if defined(__GXX_EXPERIMENTAL_CXX0X__) && __GNUC__ * 10 + __GNUC_MINOR__ >= 46 || \
defined(_MSC_FULL_VER) && _MSC_FULL_VER >= 190023026
#define FLATBUFFERS_NOEXCEPT noexcept