Yo Mark! On Wed, 13 Sep 2017 23:15:10 +0000 Mark Atwood <fallenpega...@gmail.com> wrote:
> We could just grab from NetBSD7.
Nope, that is very low level FPU assembly code. Very arch dependent.
Usually buried deep in the C compiler as a builtin.
Just look at gcc for all the arch options it has for floating point!
> Or if we know it's an IEEE754
> float, just do the direct bit ops.
Sort of a float, it is a long double. The IEEE754 does not specify how
big in memory a long double is. It may be 80 bits, or 128 bits, or?
IEEE754 also does not specify how the bits are arranged in memory.
> Or the direct fp cpu op.
Assuming you even have a long double FPU. Remember this has to
support various, ARM, i386, amd64, MIPS, sparc, etc. you may not even
have any FPU.
RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
g...@rellim.com Tel:+1 541 382 8588
Veritas liberabit vos. -- Quid est veritas?
"If you can’t measure it, you can’t improve it." - Lord Kelvin
pgpVf0zGWK4Im.pgp
Description: OpenPGP digital signature
_______________________________________________ devel mailing list devel@ntpsec.org http://lists.ntpsec.org/mailman/listinfo/devel
