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| author | John Firebaugh <john.firebaugh@gmail.com> | 2016-01-21 13:03:03 -0800 |
|---|---|---|
| committer | John Firebaugh <john.firebaugh@gmail.com> | 2016-01-22 18:41:54 -0800 |
| commit | fa894d7cbc7e27a64fa7e466fa56e718079da24c (patch) | |
| tree | 8ab4c23e1ed7becacb72c20d4809e4ad6cc39589 /include/mbgl/util/chrono.hpp | |
| parent | cef5c331fe6ab827e71aed1e4e0387983083c88e (diff) | |
| download | qtlocation-mapboxgl-fa894d7cbc7e27a64fa7e466fa56e718079da24c.tar.gz | |
[core] Polyfill std::chrono::abs
Diffstat (limited to 'include/mbgl/util/chrono.hpp')
| -rw-r--r-- | include/mbgl/util/chrono.hpp | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/mbgl/util/chrono.hpp b/include/mbgl/util/chrono.hpp index dd228df977..219b827536 100644 --- a/include/mbgl/util/chrono.hpp +++ b/include/mbgl/util/chrono.hpp @@ -53,6 +53,14 @@ std::string iso8601(SystemTimePoint); SystemTimePoint parseTimePoint(const char *); +// C++17 polyfill +template <class Rep, class Period, class = std::enable_if_t< + std::chrono::duration<Rep, Period>::min() < std::chrono::duration<Rep, Period>::zero()>> +constexpr std::chrono::duration<Rep, Period> abs(std::chrono::duration<Rep, Period> d) +{ + return d >= d.zero() ? d : -d; +} + } // namespace util } // namespace mbgl |