Subject: Re: FP precision setting in FP control register
To: Simon Burge <simonb@wasabisystems.com>
From: Jason Thorpe <thorpej@wasabisystems.com>
List: port-pc532
Date: 06/22/2003 17:48:59
On Sunday, June 22, 2003, at 05:42  PM, Simon Burge wrote:

> AFAICT from a browse of the 32081 manual, you select the precision only
> in the instruction itself (with a F suffix for single precision and
> a L suffix for double precision ("Long")).  There are also separate
> instructions to convert from single to double precision and vice versa,
> but no concept of "this register is fixed at this precision".

Yah, I later found my 32381 manual, which showed only single- and 
double-precision.   I have since filed a port-pc532 PR noting that all 
the extended precision stuff should be taken out of <machine/ieeefp.h>, 
since the FPU doesn't actually support it.

         -- Jason R. Thorpe <thorpej@wasabisystems.com>