[PATCH] libstdc++: Don't fail if math_errhandling is not defined

[Jonathan Wakely]

On Mon, 17 Jan 2022 at 10:22, Matthias Kretz <m.kretz@gsi.de> wrote:

> Tested on x86_64-linux and powerpc64le-linux. This fixes the
> powerpc64le-linux
> failure Jonathan reported. OK for trunk?
>

OK, thanks.



>
> Older glibc does not define math_errhandling with -ffast-math, in which
> case floating-point exceptions are not used.
>
> Signed-off-by: Matthias Kretz <m.kretz@gsi.de>
>
> libstdc++-v3/ChangeLog:
>
>         * include/experimental/bits/simd.h (__floating_point_flags): Do
>         not rely on the presence of the math_errhandling macro.
> ---
>  libstdc++-v3/include/experimental/bits/simd.h | 11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)
>
>
> --
> ──────────────────────────────────────────────────────────────────────────
>  Dr. Matthias Kretz                           https://mattkretz.github.io
>  GSI Helmholtz Centre for Heavy Ion Research               https://gsi.de
>  stdₓ::simd
> ──────────────────────────────────────────────────────────────────────────