Bug ID: 22700
Summary: typedef logic for _Float128 in bits/floatn.h only
Assignee: unassigned at sourceware dot org
Reporter: nszabolcs at gmail dot com
Target Milestone: ---
on targets where long double has the right semantics the
public math header may typedef _Float128 even if the
compiler has its own _Float128 definition.
#if !defined __FLT128_MANT_DIG__ || defined __cplusplus
#if !__GNUC_PREREQ (7, 0) || defined __cplusplus
to check if compiler lacks _Float128 support since it
works for both gcc and clang.
but they don't seem to support the f128 constant suffix
(only q) nor the __builtin_inff128 etc builtins so a bit
more change is required to make the headers work with it,
and it's not clear how to check for those features
(other than ifdef __clang__), however changing the headers
to be able to work with other compilers is useful anyway.
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