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-rw-r--r--boost/chrono/floor.hpp4
1 files changed, 3 insertions, 1 deletions
diff --git a/boost/chrono/floor.hpp b/boost/chrono/floor.hpp
index e133e49c8a..eb85fa7446 100644
--- a/boost/chrono/floor.hpp
+++ b/boost/chrono/floor.hpp
@@ -24,7 +24,9 @@ namespace boost
template <class To, class Rep, class Period>
To floor(const duration<Rep, Period>& d)
{
- return duration_cast<To>(d);
+ To t = duration_cast<To>(d);
+ if (t>d) --t;
+ return t;
}