[Bug c/61399] LDBL_MAX is incorrect with IBM long double format / overflow issues near large values

[vincent-gcc at vinc17 dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61399

--- Comment #3 from Vincent Lefèvre <vincent-gcc at vinc17 dot net> ---
The variable precision is unavoidable with this format (this is even a feature,
despite the drawbacks). But the fact that the variable precision is problematic
by itself isn't a reason not to try to solve other issues.