cpp/chrono/time point/operator arith2

Performs add and subtract operations involving a.

@1-2@ Applies the offset to. Effectively returns, where is the return type.

@3@ Applies the offset to  in negative direction. Effectively returns, where is the return type.

@4@ Computes the difference between and.

Return value
@1-3@ The time point that resulted from applying the offset.

@4@ The duration between the time points.