Re: FP precision setting in FP control register
Jason Thorpe <[email protected]> Sun, 22 Jun 2003 17:48:59 -0700
| Newsgroups | gmane.os.netbsd.ports.pc532 |
|---|---|
| Message-ID | <[email protected]> |
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 <[email protected]>