diff options
| author | Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com> | 2017-08-14 13:46:15 -0300 |
|---|---|---|
| committer | Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com> | 2017-08-22 10:05:41 -0300 |
| commit | a16e8bc08edca84d507715c66d6cddbbc7ed3b62 (patch) | |
| tree | f997f9780b600a0da3f0456162cc2405a0b19b1e /sysdeps/powerpc | |
| parent | 8d2ec553295a16ca94fe0285d6307e3b00a402d6 (diff) | |
| download | glibc-a16e8bc08edca84d507715c66d6cddbbc7ed3b62.zip glibc-a16e8bc08edca84d507715c66d6cddbbc7ed3b62.tar.gz glibc-a16e8bc08edca84d507715c66d6cddbbc7ed3b62.tar.bz2 | |
Provide a C++ version of issignaling that does not use __MATH_TG
The macro __MATH_TG contains the logic to select between long double and
_Float128, when these types are ABI-distinct. This logic relies on
__builtin_types_compatible_p, which is not available in C++ mode.
On the other hand, C++ function overloading provides the means to
distinguish between the floating-point types. The overloading
resolution will match the correct parameter regardless of type
qualifiers, i.e.: const and volatile.
Tested for powerpc64le, s390x, and x86_64.
* math/math.h [defined __cplusplus] (issignaling): Provide a C++
definition for issignaling that does not rely on __MATH_TG,
since __MATH_TG uses __builtin_types_compatible_p, which is only
available in C mode.
(CFLAGS-test-math-issignaling.cc): New variable.
* math/Makefile [CXX] (tests): Add test-math-issignaling.
* math/test-math-issignaling.cc: New test for C++ implementation
of type-generic issignaling.
* sysdeps/powerpc/powerpc64le/Makefile [subdir == math]
(CXXFLAGS-test-math-issignaling.cc): Add -mfloat128 to the build
options of test-math-issignaling on powerpc64le.
Diffstat (limited to 'sysdeps/powerpc')
| -rw-r--r-- | sysdeps/powerpc/powerpc64le/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sysdeps/powerpc/powerpc64le/Makefile b/sysdeps/powerpc/powerpc64le/Makefile index 77617b6..19adbfa 100644 --- a/sysdeps/powerpc/powerpc64le/Makefile +++ b/sysdeps/powerpc/powerpc64le/Makefile @@ -16,6 +16,7 @@ $(foreach suf,$(all-object-suffixes),%f128_r$(suf)): CFLAGS += -mfloat128 $(foreach suf,$(all-object-suffixes),$(objpfx)test-float128%$(suf)): CFLAGS += -mfloat128 $(foreach suf,$(all-object-suffixes),$(objpfx)test-ifloat128%$(suf)): CFLAGS += -mfloat128 CFLAGS-libm-test-support-float128.c += -mfloat128 +CFLAGS-test-math-issignaling.cc += -mfloat128 $(objpfx)test-float128% $(objpfx)test-ifloat128%: \ gnulib-tests += $(f128-loader-link) endif |