Paolo Bonzini wrote:
>
>> I'd like to implement something similar for MaverickCrunch, using the
>> integer 32-bit MAC functions, but there is no reciprocal estimate
>> function on the MaverickCrunch. I guess a lookup table could be
>> implemented, but how many entries will need to be generated, a
On Sat, 10 May 2008 11:59:16 +0100, "Martin Guy" <[EMAIL PROTECTED]>
said:
> On 5/9/08, Paolo Bonzini <[EMAIL PROTECTED]> wrote:
> > The idea is to use integer arithmetic to compute the right exponent, and
> > the lookup table to estimate the mantissa.
> The current soft-fp routine in libm seems
Andrew Haley wrote:
> Paolo Bonzini wrote:
>>> I'd like to implement something similar for MaverickCrunch, using the
>>> integer 32-bit MAC functions, but there is no reciprocal estimate
>>> function on the MaverickCrunch. I guess a lookup table could be
>>> implemented, but how many entries will
Paolo Bonzini wrote:
>
>> I'd like to implement something similar for MaverickCrunch, using the
>> integer 32-bit MAC functions, but there is no reciprocal estimate
>> function on the MaverickCrunch. I guess a lookup table could be
>> implemented, but how many entries will need to be generated, a
On 5/9/08, Paolo Bonzini <[EMAIL PROTECTED]> wrote:
> The idea is to use integer arithmetic to compute the right exponent, and
> the lookup table to estimate the mantissa. I used something like this for
> square root:
>
> 1) shift the entire FP number by 1 to the right (logical right shift)
> 2
I'd like to implement something similar for MaverickCrunch, using the
integer 32-bit MAC functions, but there is no reciprocal estimate
function on the MaverickCrunch. I guess a lookup table could be
implemented, but how many entries will need to be generated, and how
accurate will it have to b
Hi all,
I was looking for ways to improve the MaverickCrunch division routine on
ARM ep93xx, and noticed that there are few other architectures that
don't have a hardware divide.
IA-64 has a "frcpa" instruction that returns an estimate of the
reciprocal of a float or double.
Likewise, RS-6000 has
