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Add support for testing __STDC_WANT_IEC_60559_TYPES_EXT__

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This macro is defined by TS 18661-3 for supporting the _FloatN and
_FloatNx types, as well as the functions suffixed with fN.

	* bits/libc-header-start.h:
	(__GLIBC_USE_IEC_60559_TYPES_EXT): New macro.
	* include/features.h: Describe __STDC_WANT_IEC_60559_TYPES_EXT__.
	* manual/creature.texi: Likewise.
This commit is contained in:
Paul E. Murphy 2016-07-20 12:14:21 -05:00 committed by Gabriel F. T. Gomes
parent 26265c3bce
commit 4fc12f0eda
4 changed files with 28 additions and 0 deletions
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8
ChangeLog
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@ -1,3 +1,11 @@
2017-05-09 Paul E. Murphy <murphyp@linux.vnet.ibm.com>
Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com>
* bits/libc-header-start.h:
(__GLIBC_USE_IEC_60559_TYPES_EXT): New macro.
* include/features.h: Describe __STDC_WANT_IEC_60559_TYPES_EXT__.
* manual/creature.texi: Likewise.
2017-05-09 Paul E. Murphy <murphyp@linux.vnet.ibm.com>
Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com>

9
bits/libc-header-start.h
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@ -59,3 +59,12 @@
#else
# define __GLIBC_USE_IEC_60559_FUNCS_EXT 0
#endif
/* ISO/IEC TS 18661-3:2015 defines the
__STDC_WANT_IEC_60559_TYPES_EXT__ macro. */
#undef __GLIBC_USE_IEC_60559_TYPES_EXT
#if defined __USE_GNU || defined __STDC_WANT_IEC_60559_TYPES_EXT__
# define __GLIBC_USE_IEC_60559_TYPES_EXT 1
#else
# define __GLIBC_USE_IEC_60559_TYPES_EXT 0
#endif

2
include/features.h
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@ -30,6 +30,8 @@
Extensions to ISO C11 from TS 18661-1:2014.
__STDC_WANT_IEC_60559_FUNCS_EXT__
Extensions to ISO C11 from TS 18661-4:2015.
__STDC_WANT_IEC_60559_TYPES_EXT__
Extensions to ISO C11 from TS 18661-3:2015.
_POSIX_SOURCE IEEE Std 1003.1.
_POSIX_C_SOURCE If ==1, like _POSIX_SOURCE; if >=2 add IEEE Std 1003.2;

9
manual/creature.texi
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@ -191,6 +191,15 @@ enabled. Only some of the features from this TS are supported by
@theglibc{}.
@end defvr
@comment (none)
@comment ISO
@defvr Macro __STDC_WANT_IEC_60559_TYPES_EXT__
If you define this macro, features from ISO/IEC TS 18661-3:2015
(Floating-point extensions for C: Interchange and extended types) are
enabled. Only some of the features from this TS are supported by
@theglibc{}.
@end defvr
@comment (none)
@comment GNU
@defvr Macro _GNU_SOURCE