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| author | Stan Shebs <stanshebs@google.com> | 2018-01-23 09:41:49 -0800 |
|---|---|---|
| committer | Stan Shebs <stanshebs@google.com> | 2019-04-24 07:53:02 -0700 |
| commit | 1ba307084e002720491b3a3589c48ba492c1769b (patch) | |
| tree | a2fe2c641b266de813e37def5fe50427f34ba8c1 | |
| parent | 268ddcff5070d1709190b5d043b3d45a4029e107 (diff) | |
| download | glibc-1ba307084e002720491b3a3589c48ba492c1769b.tar.gz glibc-1ba307084e002720491b3a3589c48ba492c1769b.tar.xz glibc-1ba307084e002720491b3a3589c48ba492c1769b.zip | |
Add workarounds for incomplete float128 support in clang
| -rw-r--r-- | sysdeps/ieee754/float128/Makeconfig | 2 | ||||
| -rw-r--r-- | sysdeps/ieee754/float128/Makefile | 2 | ||||
| -rw-r--r-- | sysdeps/x86/bits/floatn.h | 27 |
3 files changed, 30 insertions, 1 deletions
diff --git a/sysdeps/ieee754/float128/Makeconfig b/sysdeps/ieee754/float128/Makeconfig index a493ff1d41..99ae5e07bb 100644 --- a/sysdeps/ieee754/float128/Makeconfig +++ b/sysdeps/ieee754/float128/Makeconfig @@ -1,4 +1,4 @@ # Include this earlier so it can be used earlier in Makefiles, # and sysdep/ makefiles. -float128-fcts = yes +float128-fcts = $(enable-float128) float64x-alias-fcts = yes diff --git a/sysdeps/ieee754/float128/Makefile b/sysdeps/ieee754/float128/Makefile index 571a841809..70bb3ac406 100644 --- a/sysdeps/ieee754/float128/Makefile +++ b/sysdeps/ieee754/float128/Makefile @@ -1,3 +1,4 @@ +ifeq ($(enable-float128),yes) ifeq ($(subdir),stdlib) routines += float1282mpn strfromf128 routines += strtof128 strtof128_l strtof128_nan mpn2float128 @@ -10,3 +11,4 @@ endif ifeq ($(subdir),wcsmbs) routines += wcstof128_l wcstof128 wcstof128_nan endif +endif # enable-float128 diff --git a/sysdeps/x86/bits/floatn.h b/sysdeps/x86/bits/floatn.h index d157c926ad..2a2cd2b1fb 100644 --- a/sysdeps/x86/bits/floatn.h +++ b/sysdeps/x86/bits/floatn.h @@ -21,6 +21,8 @@ #include <features.h> +#define capture(sym, val) extern int sym[val] + /* Defined to 1 if the current compiler invocation provides a floating-point type with the IEEE 754 binary128 format, and this glibc includes corresponding *f128 interfaces for it. The required @@ -55,6 +57,9 @@ #ifndef __ASSEMBLER__ +capture(i_have_float128, __HAVE_FLOAT128); +capture(i_have_distinct_float128, __HAVE_DISTINCT_FLOAT128); + /* Defined to concatenate the literal suffix to be used with _Float128 types, if __HAVE_FLOAT128 is 1. */ # if __HAVE_FLOAT128 @@ -83,9 +88,25 @@ typedef _Complex float __cfloat128 __attribute__ ((__mode__ (__TC__))); /* The type _Float128 exists only since GCC 7.0. */ # if !__GNUC_PREREQ (7, 0) || defined __cplusplus +/* need a clang 5.0 case here? */ typedef __float128 _Float128; # endif +#if defined __clang__ + +#if 0 /* clang 5.0 or less */ +#define __builtin_huge_valf128() ((_Float128) __builtin_huge_val ()) +#define __builtin_inff128() ((_Float128) __builtin_inf ()) +#define __builtin_nanf128(x) ((_Float128) __builtin_nan (x)) +#define __builtin_nansf128(x) ((_Float128) __builtin_nans (x)) + +#define __builtin_copysignf128(x,y) ((_Float128) __builtin_copysign ((double)(x),(double)(y))) +#define __builtin_fabsf128(x) ((_Float128) __builtin_fabs ((double)(x))) +#endif +#define __builtin_signbitf128(x) (__builtin_signbit (x)) + +#else /* GCC */ + /* __builtin_huge_valf128 doesn't exist before GCC 7.0. */ # if !__GNUC_PREREQ (7, 0) # define __builtin_huge_valf128() ((_Float128) __builtin_huge_val ()) @@ -112,8 +133,14 @@ typedef __float128 _Float128; # define __builtin_signbitf128 __signbitf128 # endif +#endif /* clang or GCC */ + # endif +#if !__HAVE_FLOAT128 && defined __clang__ +typedef long double _Float128; +#endif + #endif /* !__ASSEMBLER__. */ #include <bits/floatn-common.h> |