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Re: [PATCH 5/9] ldbl-128ibm-compat: Provide ISO C functions not provided by the _Float128 API
Joseph Myers <joseph@codesourcery.com> writes:
> On Wed, 6 Jun 2018, Tulio Magno Quites Machado Filho wrote:
>
>> These functions do not exist in the float128 api, but they need to be
>> provided for long double (*l api) because they are part of ISO C.
>
> They're not part of ISO C; they are part of *the long double API provided
> by glibc* (and thus need to be provided for any alternative long double
> format just like any other semi-obsolescent but still-available long
> double interface, e.g. qecvt).
Indeed.
> Is it possible to provide these particular functions in the API without
> adding extra ABIs for them? For example, if the relevant case in math.h
> had #defines of __dremieee128 or __ieee128_dreml or whatever it ends up
> being to the corresponding name for remainder, and likewise for gamma /
> lgamma, would that work correctly with __REDIRECT to get calls to dreml
> and gammal working for -mabi=ieeelongdouble without needing to add two new
> ABIs and two new source files?
Yes, it is.
I'm dropping this patch.
--
Tulio Magno