summaryrefslogtreecommitdiff
path: root/include/mbgl/math/wrap.hpp
diff options
context:
space:
mode:
Diffstat (limited to 'include/mbgl/math/wrap.hpp')
-rw-r--r--include/mbgl/math/wrap.hpp11
1 files changed, 9 insertions, 2 deletions
diff --git a/include/mbgl/math/wrap.hpp b/include/mbgl/math/wrap.hpp
index 16dc598c22..3076225384 100644
--- a/include/mbgl/math/wrap.hpp
+++ b/include/mbgl/math/wrap.hpp
@@ -9,8 +9,15 @@ namespace util {
// arithmetic.
template <typename T>
T wrap(T value, T min, T max) {
- T d = max - min;
- return std::fmod((std::fmod((value - min), d) + d), d) + min;
+ if (value >= min && value < max) {
+ return value;
+ } else if (value == max) {
+ return min;
+ }
+
+ const T delta = max - min;
+ const T wrapped = min + std::fmod(value - min, delta);
+ return value < min ? wrapped + delta : wrapped;
}
} // namespace util