[Bug c/92875] GCC ignores the floating-point 'f' suffix in C11 mode

[joseph at codesourcery dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92875

--- Comment #5 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
Most architectures use FLT_EVAL_METHOD == 0.  It's specific to x87 (and 
older m68k) that FLT_EVAL_METHOD == 2 because x87 doesn't support direct 
arithmetic on float or double.  Lack of direct float and double arithmetic 
requires FLT_EVAL_METHOD == 2 and FLT_EVAL_METHOD == 2 requires 
interpreting floating constants to the range and precision of long double, 
whatever their semantic type.