lib/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2025-08-08 17:42:12 +03:00
Code Activity

powerpc: Fix the compiler type used with C++ when -mabi=ieeelongdouble

Browse Source 
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>
This commit is contained in:
Tulio Magno Quites Machado Filho
2018-05-11 18:05:03 -03:00
parent b4d5b8b021
commit 5db7d705db
4 changed files with 43 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
math/math.h
View File

@@ -989,7 +989,9 @@ issignaling (long double __val)
return __issignalingl (__val);
# endif
}
# if __HAVE_DISTINCT_FLOAT128
# if __HAVE_FLOAT128_UNLIKE_LDBL
/* When using an IEEE 128-bit long double, _Float128 is defined as long double
in C++. */
inline int issignaling (_Float128 __val) { return __issignalingf128 (__val); }
# endif
} /* extern C++ */
@@ -1027,7 +1029,9 @@ iszero (long double __val)
return __fpclassifyl (__val) == FP_ZERO;
# endif
}
# if __HAVE_DISTINCT_FLOAT128
# if __HAVE_FLOAT128_UNLIKE_LDBL
/* When using an IEEE 128-bit long double, _Float128 is defined as long double
in C++. */
inline int
iszero (_Float128 __val)
{
@@ -1517,7 +1521,9 @@ template<> struct __iseqsig_type<long double>
}
};
# if __HAVE_DISTINCT_FLOAT128
# if __HAVE_FLOAT128_UNLIKE_LDBL
/* When using an IEEE 128-bit long double, _Float128 is defined as long double
in C++. */
template<> struct __iseqsig_type<_Float128>
{
static int __call (_Float128 __x, _Float128 __y) throw ()