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Re: [PATCH] AC_USE_SYSTEM_EXTENSIONS: port to recent ISO C
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From: |
Joseph Myers |
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Subject: |
Re: [PATCH] AC_USE_SYSTEM_EXTENSIONS: port to recent ISO C |
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Date: |
Wed, 14 Sep 2016 20:10:44 +0000 |
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User-agent: |
Alpine 2.20 (DEB 67 2015-01-07) |
On Wed, 14 Sep 2016, Paul Eggert wrote:
> > (There are other feature test macros for
> > ISO C extensions as well.)
>
> Thanks, is there a list of these new macros somewhere? I might as well add
> them all now.
ISO 24747 defines __STDC_WANT_MATH_SPEC_FUNCS__ (must be defined to expand
to the integer constant 1).
TR 24732 defines __STDC_WANT_DEC_FP__ (only needs to be defined, expansion
doesn't matter). This has since been superseded by TS 18661-2, which
defines __STDC_WANT_IEC_60559_DFP_EXT__ instead (again, expansion doesn't
matter).
TS 18661-5 defines __STDC_WANT_IEC_60559_ATTRIBS_EXT__ (expansion doesn't
matter).
TR 18037 does not define any feature test macros.
--
Joseph S. Myers
address@hidden