[Bug c/79128] export unsafe-math-optimization cpp defintion

[jtaylor.debian at googlemail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79128

Julian Taylor <jtaylor.debian at googlemail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|---                         |FIXED

--- Comment #1 from Julian Taylor <jtaylor.debian at googlemail dot com> ---
looking into the source you actually are already providing __FINITE_MATH_ONLY__
and __NO_MATH_ERRNO__ since gcc 5, that is probably good enough.

It would be great if you would document new stuff better, I do read all the
changes files but never saw this.