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| author | Sudarsana Babu Nagineni <sudarsana.babu@mapbox.com> | 2018-08-09 17:13:05 +0300 |
|---|---|---|
| committer | Sudarsana Babu Nagineni <sudarsana.babu@mapbox.com> | 2018-08-10 13:43:05 +0300 |
| commit | d1f1ef922f329f3a5f729c34dde615d5afeb5ac6 (patch) | |
| tree | 6723114e41ac03fc27ab02de508aaa6fcdd345b2 /include | |
| parent | 0130c58fdd74edbbfe668f3125a9377554d7d605 (diff) | |
| download | qtlocation-mapboxgl-d1f1ef922f329f3a5f729c34dde615d5afeb5ac6.tar.gz | |
Fix Android build
Cherry picked from commit fc0745a699a0ef60c080e9c2ff5eaecde9cb5306
Diffstat (limited to 'include')
| -rw-r--r-- | include/mbgl/math/log2.hpp | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/mbgl/math/log2.hpp b/include/mbgl/math/log2.hpp index 6a1ba23ed9..3136ac22b4 100644 --- a/include/mbgl/math/log2.hpp +++ b/include/mbgl/math/log2.hpp @@ -2,6 +2,11 @@ #include <cmath> #include <cstdint> +#include <type_traits> + +#if defined(__ANDROID__) +#include <android/api-level.h> +#endif namespace mbgl { namespace util { @@ -12,3 +17,14 @@ uint32_t ceil_log2(uint64_t x); } // namespace util } // namespace mbgl + +// log2 is not available on Android before API 18. +#if defined(__ANDROID__) && defined(__GNUC__) && \ + defined(__ANDROID_API__) && __ANDROID_API__ < 18 + +template <typename T> +typename std::enable_if_t<std::is_floating_point<T>::value, T> log2(T x) { + return ::log(x) / M_LN2; +} + +#endif |