Thank you for your response.

Jonathan Wakely <jwakely.gcc@gmail.com> 于2022年12月9日周五 22:40写道：

> This question belongs on the gcc-help mailing list, not here.
>
> On Fri, 9 Dec 2022 at 12:01, hongjie wu via Gcc <gcc@gcc.gnu.org> wrote:
> >
> > Dear Sir or Madam，
> >         I want to know how to obtain optimal level of the value of the
>
> What do you mean by optimal?
>
> They have pros and cons.
>
> > specific compiler options, for example  - fexcess - precision = [fast |
> > standard] [default], including the default represent？Or how to determine?
>
> gcc -Q --help=optim
>
> >         I am looking forward to your favorable replay.
>