[Bug math/33422] catanh family inconsistent on errno

[adhemerval.zanella at linaro dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=33422

Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:

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                 CC|                            |adhemerval.zanella at linaro dot o
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--- Comment #1 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
It is because both float/double __ieee752_log implementations, called from
math/s_catanh_template.c, sets the errno for 0 input; different than x86 and
float28 versions.

Ideally it would be better adapt the SVID wrappers to compatibility symbol (as
we did for float/double) for logl/logf128 and assume MATH_ERRNO.

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