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| author | Konstantin Käfer <mail@kkaefer.com> | 2018-05-29 14:07:32 +0200 |
|---|---|---|
| committer | Konstantin Käfer <mail@kkaefer.com> | 2018-06-04 10:43:21 +0200 |
| commit | d66251234d7c0feb875b9490ca945ee9d43306c1 (patch) | |
| tree | 3c661091edb98ac15a8711e93fde774a5e6e824a /include/mbgl/math | |
| parent | d232a7a6f30927cb7e9107c9357bc53e2b1ae0f9 (diff) | |
| download | qtlocation-mapboxgl-d66251234d7c0feb875b9490ca945ee9d43306c1.tar.gz | |
[core] don't use floating point versions of pow/log
GLIBC 2.27 added new versioned symbols of powf and logf, while the double versions of pow and log remained stable.
Prefer the double version to avoid introducing a dependency on a newer version of GLIBC than strictly necessary.
See https://lists.gnu.org/archive/html/info-gnu/2018-02/msg00000.html
Diffstat (limited to 'include/mbgl/math')
| -rw-r--r-- | include/mbgl/math/log2.hpp | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/include/mbgl/math/log2.hpp b/include/mbgl/math/log2.hpp index 53d5e45545..6a1ba23ed9 100644 --- a/include/mbgl/math/log2.hpp +++ b/include/mbgl/math/log2.hpp @@ -2,7 +2,6 @@ #include <cmath> #include <cstdint> -#include <type_traits> namespace mbgl { namespace util { @@ -11,17 +10,5 @@ namespace util { // (== number of bits required to store x) uint32_t ceil_log2(uint64_t x); -template <typename T> -typename std::enable_if_t<std::is_floating_point<T>::value, T> log2(T x) -{ -// log2() is producing wrong results on ARMv5 binaries -// running on ARMv7+ CPUs. -#if defined(__ANDROID__) - return ::log(x) / M_LN2; -#else - return ::log2(x); -#endif -} - } // namespace util } // namespace mbgl |