https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119014
--- Comment #22 from Vincent Lefèvre <vincent-gcc at vinc17 dot net> --- (In reply to Vincent Lefèvre from comment #21) > What C23 documents applies *only* when -fexcess-precision=standard, as this > is the only -fexcess-precision value for which GCC is documented to be > conforming concerning the range and precision ("When compiling C or C++, if > -fexcess-precision=standard is specified then excess precision follows the > rules specified in ISO C99 or C++"). So, with -fexcess-precision=standard, > one cannot deduce anything from what C23 says. Sorry, I meant: "with -fexcess-precision=16", one cannot deduce anything from what C23 says.