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Re: [PATCH 28/31] Avoid compat symbols for totalorder in powerpc64le IEEE long double
- From: Joseph Myers <joseph at codesourcery dot com>
- To: "Gabriel F. T. Gomes" <gabriel at inconstante dot net dot br>
- Cc: <libc-alpha at sourceware dot org>
- Date: Mon, 21 Oct 2019 14:59:12 +0000
- Subject: Re: [PATCH 28/31] Avoid compat symbols for totalorder in powerpc64le IEEE long double
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- References: <20191015190529.11559-1-gabriel@inconstante.net.br> <20191015190529.11559-29-gabriel@inconstante.net.br> <alpine.DEB.2.21.1910152102200.15545@digraph.polyomino.org.uk> <20191020224946.0b3666a3@tereshkova>
On Sun, 20 Oct 2019, Gabriel F. T. Gomes wrote:
> Hi, Joseph,
>
> On Tue, 15 Oct 2019, Joseph Myers wrote:
>
> >This needs more explanation (in a comment in the relevant files).
>
> How about the following paragraph?
>
> /* On platforms that reuse the _Float128 implementation for IEEE long
> double (powerpc64le), the libm_alias_float128_other_r_ldbl macro
> (which is called by the libm_alias_ldouble macro) is used to create
> aliases between *f128 (_Float128 API) and __*ieee128 functions.
> However, this compat version of totalorderl is older than the
> availability of __ieee*128 symbols, thus, the compat alias is not
> required, nor desired. */
> #undef libm_alias_float128_other_r_ldbl
> #define libm_alias_float128_other_r_ldbl(from, to, r)
Yes, that seems reasonable.
--
Joseph S. Myers
joseph@codesourcery.com