On Wed, 4 Nov 2020, Raoni Fassina Firmino via Gcc-patches wrote:

> IMHO, It seems like it is not necessary if there not a libc that have
> different values for the FE_* macros. I didn't check other archs, but if
> is the case for some other arch I think it could be changed if and when
> some other arch implements expands for these builtins.

SPARC is the case I know of where the FE_* values vary depending on target 
libc (see the SPARC_LOW_FE_EXCEPT_VALUES target macro).

-- 
Joseph S. Myers
jos...@codesourcery.com

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