Re: VAX sin/cos/atan2 vs polyd (Was: Does anyone have a netbsd-5 or earlier VAX to hand?)

[David Brownlee <abs%netbsd.org@localhost>]

On 27 May 2012 20:24, Christos Zoulas <christos%astron.com@localhost> wrote:
> In article 
> <CAGN_6pY=QoOZ-J87U_kr0=40=7VrMJHrYbJ8UpCj8enC-C-65g%mail.gmail.com@localhost>,
> David Brownlee  <abs%absd.org@localhost> wrote:
>
>>The POLY instruction was dropped in Rigel and later CPU variants,
>>which is a problem for NetBSD/vax's use of them in
>>lib/libm/arch/vax/{n_argred.S,n_atan2.S}>
>
> c) emulate it.
>

Aha!

On 03 Mar 2005 09:32,  ragge%ludd.luth.se@localhost> wrote:
> The emulation code for polyd is in place; I wrote it 5 years ago and
> Brandon Creighton did a bunch of cleanup and added emodd,  see
> vax/vax/unimpl_emul.S.  So I think it's some kind of bug in the
> emulation code that should be searched for.

So now its down to debugging that! :)