Subject: Re: accuracy of "long double"
To: None <M.Drochner@fz-juelich.de>
From: Vincent <email@example.com>
Date: 09/03/2007 22:45:38
> It is initialized in machdep.c:setregs().
Ok, viel Dank.
> That's just an initial check to tell whether there is an FPU at all.
> (could probably be skipped if it is reported by cpuid)
Yup, I saw that, since the state is not altered.
> It is complex matter, and there are some tradeoffs. Imho, one is better
> off using just "double" -- the code is portable, and even on i386 it
> can benefit from SSE2 and successors.
I agree (after some hard head ache). Specifically, I have added a little
extra asm to allow for full resolution just in the critical section of
the code, and #if'ed with GNUC and i386. So, if we have extra precision,
good, if not, doesn't matter much.
Now, is this thread safe?
Viel Dank nocheinmal,