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| author | Dan Albert <danalbert@google.com> | 2014-11-20 10:47:55 -0800 |
|---|---|---|
| committer | Dan Albert <danalbert@google.com> | 2014-11-20 10:47:55 -0800 |
| commit | e4c649c9fca659fda908b0d4608feedd434b5656 (patch) | |
| tree | 976fd5c97560c95dbe4ab9128116bc3637190888 /include/utils | |
| parent | 606bb5f2e5f2913d5cb30ed87dd18da23dda1705 (diff) | |
| download | system_core-e4c649c9fca659fda908b0d4608feedd434b5656.zip system_core-e4c649c9fca659fda908b0d4608feedd434b5656.tar.gz system_core-e4c649c9fca659fda908b0d4608feedd434b5656.tar.bz2 | |
Add a pre-C++11 constexpr compatibility macro.
Needed for cases where something should be constexpr if possible, but
not being constexpr is fine if in pre-C++11 code (such as a const
static float member variable).
Bug: 18466763
Change-Id: I635d062575ba2fbc4cbe3a89f730128c404d95e1
Diffstat (limited to 'include/utils')
| -rw-r--r-- | include/utils/Compat.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/utils/Compat.h b/include/utils/Compat.h index 20a6920..0df40a1 100644 --- a/include/utils/Compat.h +++ b/include/utils/Compat.h @@ -44,6 +44,17 @@ static inline ssize_t pread64(int fd, void* buf, size_t nbytes, off64_t offset) #endif /* + * Needed for cases where something should be constexpr if possible, but not + * being constexpr is fine if in pre-C++11 code (such as a const static float + * member variable). + */ +#if __cplusplus >= 201103L +#define CONSTEXPR constexpr +#else +#define CONSTEXPR +#endif + +/* * TEMP_FAILURE_RETRY is defined by some, but not all, versions of * <unistd.h>. (Alas, it is not as standard as we'd hoped!) So, if it's * not already defined, then define it here. |