diff options
| -rw-r--r-- | absl/time/time.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/absl/time/time.h b/absl/time/time.h index 01b55322..89b1b2af 100644 --- a/absl/time/time.h +++ b/absl/time/time.h @@ -187,7 +187,12 @@ class Duration { Duration& operator%=(Duration rhs); // Overloads that forward to either the int64_t or double overloads above. - // Integer operands must be representable as int64_t. + // Integer operands must be representable as int64_t. Integer division is + // truncating, so values less than the resolution will be returned as zero. + // Floating-point multiplication and division is rounding (halfway cases + // rounding away from zero), so values less than the resolution may be + // returned as either the resolution or zero. In particular, `d / 2.0` + // can produce `d` when it is the resolution and "even". template <typename T, time_internal::EnableIfIntegral<T> = 0> Duration& operator*=(T r) { int64_t x = r; |