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| author | Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com> | 2018-05-11 18:05:03 -0300 |
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| committer | Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com> | 2018-05-11 18:05:03 -0300 |
| commit | 5db7d705db472f47a349fe342a8d7150ec922786 (patch) | |
| tree | bd3d1a77f9d27ccacca0dcdb13313fd8a191b2ce /sysdeps/powerpc/bits/floatn.h | |
| parent | b4d5b8b02133e0c317e6c836b51bbee3b00877b8 (diff) | |
| download | glibc-5db7d705db472f47a349fe342a8d7150ec922786.tar.gz glibc-5db7d705db472f47a349fe342a8d7150ec922786.tar.xz glibc-5db7d705db472f47a349fe342a8d7150ec922786.zip | |
powerpc: Fix the compiler type used with C++ when -mabi=ieeelongdouble
When compiling C++ code with -mabi=ieeelongdouble, KCtype is unavailable and the long double type should be used instead. This is also providing macro __HAVE_FLOAT128_UNLIKE_LDBL in order to identify the kind of long double type is being used in the current compilation unit. Notice that bits/floatn.h cannot benefit from the new macro due to order of header inclusion. * bits/floatn-common.h: Define __HAVE_FLOAT128_UNLIKE_LDBL. * math/math.h: Restrict the prototype definition for the functions issignaling(_Float128) and iszero(_Float128); and template __iseqsig_type<_Float128>, from __HAVE_DISTINCT_FLOAT128 to __HAVE_FLOAT128_UNLIKE_LDBL. * sysdeps/powerpc/bits/floatn.h [__HAVE_FLOAT128 && (!__GNUC_PREREQ (7, 0) || defined __cplusplus) && __LDBL_MANT_DIG__ == 113]: Use long double suffix for __f128() constants; define the type _Float128 as long double; and reuse long double in __CFLOAT128. Signed-off-by: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>
Diffstat (limited to 'sysdeps/powerpc/bits/floatn.h')
| -rw-r--r-- | sysdeps/powerpc/bits/floatn.h | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/sysdeps/powerpc/bits/floatn.h b/sysdeps/powerpc/bits/floatn.h index c3834096e3..c6d8b9b9b3 100644 --- a/sysdeps/powerpc/bits/floatn.h +++ b/sysdeps/powerpc/bits/floatn.h @@ -33,7 +33,8 @@ #endif /* Defined to 1 if __HAVE_FLOAT128 is 1 and the type is ABI-distinct - from the default float, double and long double types in this glibc. */ + from the default float, double and long double types in this glibc, i.e. + calls to the binary128 functions go to *f128 symbols instead of *l. */ #if __HAVE_FLOAT128 # define __HAVE_DISTINCT_FLOAT128 1 #else @@ -58,7 +59,11 @@ # if __HAVE_FLOAT128 # if !__GNUC_PREREQ (7, 0) || defined __cplusplus /* The literal suffix (f128) exist for powerpc only since GCC 7.0. */ -# define __f128(x) x##q +# if __LDBL_MANT_DIG__ == 113 +# define __f128(x) x##l +# else +# define __f128(x) x##q +# endif # else # define __f128(x) x##f128 # endif @@ -66,8 +71,13 @@ /* Defined to a complex binary128 type if __HAVE_FLOAT128 is 1. */ # if __HAVE_FLOAT128 -# if !__GNUC_PREREQ (7, 0) || defined __cplusplus -/* Add a typedef for older GCC compilers which don't natively support +# if __LDBL_MANT_DIG__ == 113 && defined __cplusplus +typedef long double _Float128; +# define __CFLOAT128 _Complex long double +# elif !__GNUC_PREREQ (7, 0) || defined __cplusplus +/* The type _Float128 exist for powerpc only since GCC 7.0. */ +typedef __float128 _Float128; +/* Add a typedef for older GCC and C++ compilers which don't natively support _Complex _Float128. */ typedef _Complex float __cfloat128 __attribute__ ((__mode__ (__KC__))); # define __CFLOAT128 __cfloat128 @@ -78,12 +88,6 @@ typedef _Complex float __cfloat128 __attribute__ ((__mode__ (__KC__))); /* The remaining of this file provides support for older compilers. */ # if __HAVE_FLOAT128 - -/* The type _Float128 exist for powerpc only since GCC 7.0. */ -# if !__GNUC_PREREQ (7, 0) || defined __cplusplus -typedef __float128 _Float128; -# endif - /* Builtin __builtin_huge_valf128 doesn't exist before GCC 7.0. */ # if !__GNUC_PREREQ (7, 0) # define __builtin_huge_valf128() ((_Float128) __builtin_huge_val ()) |