0c86a66748
Jon pointed out that we have TODO: _Bfloat16 in <compare>.
Right now _S_fp_fmt() returns _Binary16 for _Float16, __fp16 as well
as __bf16 and it actually works because we don't have a special handling
of _Binary16. So, either we could just document that, but I'm a little bit
afraid if HPPA or MIPS don't start supporting _Float16 and/or __bf16.
If they do, we have the
#if defined __hppa__ || (defined __mips__ && !defined __mips_nan2008)
// IEEE 754-1985 allowed the meaning of the quiet/signaling
// bit to be reversed. Flip that to give desired ordering.
if (__builtin_isnan(__x) && __builtin_isnan(__y))
{
using _Int = decltype(__ix);
constexpr int __nantype = __fmt == _Binary32 ? 22
: __fmt == _Binary64 ? 51
: __fmt == _Binary128 ? 111
: -1;
constexpr _Int __bit = _Int(1) << __nantype;
__ix ^= __bit;
__iy ^= __bit;
}
#endif
code, the only one where we actually care whether something is
_Binary{32,64,128} (elsewhere we just care about the x86 and m68k 80bits
or double double or just floating point type's sizeof) and we'd need
to handle there _Binary16 and/or _Bfloat16.
So this patch uses different enum for it even when it isn't needed right
now, after all _Binary16 isn't needed either and we could just use
_Binary32...
2022-11-02 Jakub Jelinek <jakub@redhat.com>
* libsupc++/compare (_Strong_order::_Fp_fmt): Add _Bfloat16.
(_Strong_order::_Bfloat16): New static data member.
(_Strong_order::_S_fp_fmt): Return _Bfloat16 for std::bfloat16_t.
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| .. | ||
| array_type_info.cc | ||
| atexit_arm.cc | ||
| atexit_thread.cc | ||
| atomic_lockfree_defines.h | ||
| bad_alloc.cc | ||
| bad_array_length.cc | ||
| bad_array_new.cc | ||
| bad_cast.cc | ||
| bad_typeid.cc | ||
| class_type_info.cc | ||
| compare | ||
| cxxabi.h | ||
| cxxabi_forced.h | ||
| cxxabi_init_exception.h | ||
| del_op.cc | ||
| del_opa.cc | ||
| del_opant.cc | ||
| del_opnt.cc | ||
| del_ops.cc | ||
| del_opsa.cc | ||
| del_opv.cc | ||
| del_opva.cc | ||
| del_opvant.cc | ||
| del_opvnt.cc | ||
| del_opvs.cc | ||
| del_opvsa.cc | ||
| dyncast.cc | ||
| eh_alloc.cc | ||
| eh_arm.cc | ||
| eh_atomics.h | ||
| eh_aux_runtime.cc | ||
| eh_call.cc | ||
| eh_catch.cc | ||
| eh_exception.cc | ||
| eh_globals.cc | ||
| eh_personality.cc | ||
| eh_ptr.cc | ||
| eh_term_handler.cc | ||
| eh_term_handler.h | ||
| eh_terminate.cc | ||
| eh_throw.cc | ||
| eh_tm.cc | ||
| eh_type.cc | ||
| eh_unex_handler.cc | ||
| enum_type_info.cc | ||
| exception | ||
| exception.h | ||
| exception_defines.h | ||
| exception_ptr.h | ||
| function_type_info.cc | ||
| fundamental_type_info.cc | ||
| guard.cc | ||
| guard_error.cc | ||
| hash_bytes.cc | ||
| hash_bytes.h | ||
| initializer_list | ||
| Makefile.am | ||
| Makefile.in | ||
| nested_exception.cc | ||
| nested_exception.h | ||
| new | ||
| new_handler.cc | ||
| new_op.cc | ||
| new_opa.cc | ||
| new_opant.cc | ||
| new_opnt.cc | ||
| new_opv.cc | ||
| new_opva.cc | ||
| new_opvant.cc | ||
| new_opvnt.cc | ||
| pbase_type_info.cc | ||
| pmem_type_info.cc | ||
| pointer_type_info.cc | ||
| pure.cc | ||
| si_class_type_info.cc | ||
| tinfo.cc | ||
| tinfo.h | ||
| tinfo2.cc | ||
| typeinfo | ||
| unwind-cxx.h | ||
| vec.cc | ||
| vmi_class_type_info.cc | ||
| vterminate.cc | ||
| vtv_stubs.cc | ||