diff options
| -rw-r--r-- | Python/pytime.c | 11 |
1 files changed, 8 insertions, 3 deletions
diff --git a/Python/pytime.c b/Python/pytime.c index 243f756f3d..9470636fdc 100644 --- a/Python/pytime.c +++ b/Python/pytime.c @@ -75,12 +75,17 @@ _PyTime_RoundHalfEven(double x) static double _PyTime_Round(double x, _PyTime_round_t round) { + /* volatile avoids optimization changing how numbers are rounded */ + volatile double d; + + d = x; if (round == _PyTime_ROUND_HALF_EVEN) - return _PyTime_RoundHalfEven(x); + d = _PyTime_RoundHalfEven(d); else if (round == _PyTime_ROUND_CEILING) - return ceil(x); + d = ceil(d); else - return floor(x); + d = floor(d); + return d; } static int |