diff options
| -rw-r--r-- | ChangeLog | 7 | ||||
| -rw-r--r-- | math/math.h | 21 | ||||
| -rw-r--r-- | misc/sys/cdefs.h | 16 |
3 files changed, 44 insertions, 0 deletions
@@ -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 diff --git a/math/math.h b/math/math.h index 3b0bcad..5f006a8 100644 --- a/math/math.h +++ b/math/math.h @@ -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) \ diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h index 74f9a49..06523bf 100644 --- a/misc/sys/cdefs.h +++ b/misc/sys/cdefs.h @@ -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 */ |