cpp/coroutine/coroutine handle/done

Checks if a suspended coroutine is suspended at its final suspended point.

@1@ Returns if the coroutine to which  refers is suspended at its final suspend point, or  if the coroutine is suspended at other suspend points. The behavior is undefined if does not refer to a suspended coroutine.

@2@ Always returns.

Parameters
(none)

Return value
@1@ if the coroutine is suspended at its final suspend point,  if the coroutine is suspended at other suspend points.

@2@.