[Bug c/64470] “floating constant exceeds range” warning for constants that should fit

[joseph at codesourcery dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64470

--- Comment #2 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
The definition of DBL_MAX_EXP (and thereby GCC's __DBL_MAX_EXP__) in C11 
is "maximum integer such that FLT_RADIX raised to one less than that power 
is a representable finite floating-point number, e_max".  Note the "one 
less than".