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float128: Extend __MATH_TG for float128 support

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* math/math.h (__MATH_TG): Extend the conditions to add
	_Float128 support.
	* misc/sys/cdefs.h (__HAVE_GENERIC_SELECTION): New macro.
This commit is contained in:
Gabriel F. T. Gomes 2016-12-09 11:41:55 -02:00
parent b2980e3c54
commit 477bf19a59
3 changed files with 44 additions and 0 deletions
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7
ChangeLog
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@ -1,3 +1,10 @@
2017-05-17 Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com>
Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
* math/math.h (__MATH_TG): Extend the conditions to add
_Float128 support.
* misc/sys/cdefs.h (__HAVE_GENERIC_SELECTION): New macro.
2017-05-17 Paul A. Clarke <pc@us.ibm.com>
* sysdeps/powerpc/powerpc64/fpu/multiarch/Makefile

21
math/math.h
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@ -340,6 +340,27 @@ extern int signgam;
#ifdef __NO_LONG_DOUBLE_MATH
# define __MATH_TG(TG_ARG, FUNC, ARGS) \
(sizeof (TG_ARG) == sizeof (float) ? FUNC ## f ARGS : FUNC ARGS)
#elif __HAVE_DISTINCT_FLOAT128
# if __HAVE_GENERIC_SELECTION
# define __MATH_TG(TG_ARG, FUNC, ARGS) \
_Generic ((TG_ARG), \
float: FUNC ## f ARGS, \
default: FUNC ARGS, \
long double: FUNC ## l ARGS, \
_Float128: FUNC ## f128 ARGS)
# else
# define __MATH_TG(TG_ARG, FUNC, ARGS) \
__builtin_choose_expr \
(__builtin_types_compatible_p (__typeof (TG_ARG), float), \
FUNC ## f ARGS, \
__builtin_choose_expr \
(__builtin_types_compatible_p (__typeof (TG_ARG), double), \
FUNC ARGS, \
__builtin_choose_expr \
(__builtin_types_compatible_p (__typeof (TG_ARG), long double), \
FUNC ## l ARGS, \
FUNC ## f128 ARGS)))
# endif
#else
# define __MATH_TG(TG_ARG, FUNC, ARGS) \
(sizeof (TG_ARG) == sizeof (float) \

16
misc/sys/cdefs.h
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@ -464,4 +464,20 @@
# define __glibc_macro_warning(msg)
#endif
/* Support for generic selection (ISO C11) is available in GCC since
version 4.9. Previous versions do not provide generic selection,
even though they might set __STDC_VERSION__ to 201112L, when in
-std=c11 mode. Thus, we must check for !defined __GNUC__ when
testing __STDC_VERSION__ for generic selection support.
On the other hand, Clang also defines __GNUC__, so a clang-specific
check is required to enable the use of generic selection. */
#if __GNUC_PREREQ (4, 9) \
|| __glibc_clang_has_extension (c_generic_selections) \
|| (!defined __GNUC__ && defined __STDC_VERSION__ \
&& __STDC_VERSION__ >= 201112L)
# define __HAVE_GENERIC_SELECTION 1
#else
# define __HAVE_GENERIC_SELECTION 0
#endif
#endif /* sys/cdefs.h */