Paolo Bonzini asked: > > Similarly to 'printf-frexp', here is the corresponding module for > > 'long double'. > > What's the difference from frexpl and why can't we obsolete that one?
You see it by looking into the USE_FREXP_LDEXP branch of lib/printf-frexp.c: - The normalization is different (mantissa in [0.5,1.0) vs. [1.0,2.0), - The treatment of denormalized numbers is different. Basically, it's tailored for printf's use only. I made it a separate module from 'vasnprintf' because some other printf-like routines in unistdio/* may need it as well. If printf-frexp was to use 'frexp' and 'ldexp' always, I would also have had to provide 'ldexp-nolibm', 'ldexpl-nolibm' modules, and the code would have been less efficient than it is now. I don't think either of the modules 'frexpl', 'printf-frexpl' is obsolete. Bruno
