complex arc-trig etc

[Steve Kargl]

On Fri, Dec 28, 2012 at 09:37:26PM -0600, Stephen Montgomery-Smith wrote:
> On 12/28/2012 09:19 PM, Steve Kargl wrote:
> > On Fri, Dec 28, 2012 at 08:24:52PM -0600, Stephen Montgomery-Smith wrote:
> >> On 12/17/2012 02:38 AM, Bruce Evans wrote:
> >>> On Sun, 16 Dec 2012, Stephen Montgomery-Smith wrote:
> >>>
> >>>> Hey guys, my complex arc-trig functions at
> >>>> http://people.freebsd.org/~stephen/ have been sitting there a long time.
> >>>> Anyone want to commit them?
> >>>
> >>> I was sort of waiting for the next rounds of changes:
> >>>
> >>> 1. update the template to give similar code for float and long double
> >>> 2. make it work for i386 using ENTERI()
> >>
> >> What is ENTERI()?
> > 
> > For 'long double' on i386, the precision is
> > set to 53 bits in the kernel (see the file
> > sys/x86/include/fpu.h).  ENTERI() toggles
> > the fpu control word to use 64 bits for 
> > long double and you use RETURNI() instead
> > of 'return(val)' to return from the function.
> > You can see these being used in msun/src/ld80/
> > s_expl.c.  Also, note the ENTERI() and RETURNI()
> > are defined in msun/src/math_private.h.
> > 
> > Bruce can probably give a better explanation
> > and the history.
> > 
> Now I see why I couldn't find it.  It is only in CURRENT.  (I had
> grepped the whole of source, but I am still in the dark ages of FreeBSD-8.)

Yes, it is a CURRENT only thing at the moment.
I suppose that someone someday may do a merge
from current, but it won't be me as I only
run -current.
-- 
Steve