- Fixed immediate source operand of LDEXP, LD[IL][FD]
which is an integer, unlike several other FPP instructions.
- Renamed floating point instruction formats so they match the
instruction descriptions in the architecture handbook better.
which have an general (source) argument and an AC destination.
There are no FPP instrs which have 1 general source arg;
only with 1 general destination (even TSTF).
by using long double where available.
Unfortunately, it won't be available everywhere, so a better solution
would still be nice.
Also, sometimes rounding of smaller sizes doesn't work right yet.
