Are any of the Microchip floating point app notes reasonably bug free?
I've just finished downloading AN575, revision 2.7 and 2.8.  I don't see
any difference from v2.02 offhand, other than a few variable renames.

In the past I've read on the Piclist that the divide routine is buggy, that
the multiply routine doesn't always round correctly, and that the addition
and subtraction routines fail under some circumstances (something about
large magnitude differences (2^24) and opposite signs).  I've also read
that the normalize routine doesn't always shift properly, causing rounding
and carry errors.

But these posts didn't mention which revision of the library they found the
bugs in.  And Microchip didn't bother adding any comments to the code
warning of bugs (or bug corrections)!

Has anyone found a solid floating point library?


thanks in advance,
newell