Hi, I'm trying to simplify somewhat code in the library hashing floating point numbers, and I would find very useful a simple "recipe" giving the total number of bits actually used by a long double: the basic issue is that for formats like the 80-bit Intel, I can't just rely on sizeof, because the last 6 bytes are unused. At the moment I'm trying to cook up something fixing that count with LDBL_MANT_DIG, but maybe there is something simpler, maybe using preprocessor builtins?!?
Thanks in advance for any help... Paolo.
