Re: Use of C99 extra long double math functions after r236148

Just to jump back into the fray a bit, since this point hasn't been =
articulated well.

On Jul 10, 2012, at 6:55 PM, Peter Jeremy wrote:

> On 2012-Jul-08 19:01:07 -0700, Steve Kargl =
<sgk@troutmask.apl.washington.edu> wrote:
>> Well, on the most popular hardware (that being i386/amd64),
>> ld80 will use hardware fp instruction while ld128 must be
>> done completely in software.  The speed difference is
>> significant.
>=20
> AFAIK, of the architectures that FreeBSD supports, only sparc64
> defines ld128 in the architecture and I don't believe there are any
> SPARC chip implementations that implement ld128 math in hardware.

We shouldn't be gating the new math on an issue that only affects =
sparc64 machines.  If they have ld80 level of support for that =
architecture, then that is sufficient to get things into the tree.  =
There's no real benefit from making numerics good on sparc64 for the =
project, since our support for the platform isn't stellar and the =
platform itself is getting a bit long in the tooth.

That said, if people want to do it, be my guest.  If it is important =
enough to catch someone's attention, then it is important enough to =
have.  It just isn't important enough to be a gating factor if nobody =
has signed up for it yet.

Warner

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