20 General utilities library [utilities]

20.11 Time utilities [time]

20.11.6 Class template time_point [time.point]

20.11.6.3 time_point arithmetic [time.point.arithmetic]

time_point& operator+=(const duration& d);

1

Effects: d_ += d.

2

Returns: *this.

time_point& operator-=(const duration& d);

3

Effects: d_ -= d.

4

Returns: *this.