On 2018-08-03 14:00, Houder wrote:
On 2018-08-03 12:39, Corinna Vinschen wrote:
On Aug 3 11:27, Houder wrote:
On 2018-08-03 09:36, Corinna Vinschen wrote:
[snip]
> In terms of x86_64, do we have to change the fenv stuff completely
> to use only SSE opcodes? Does that make sense at all?
On Aug 3 14:00, Houder wrote:
> On 2018-08-03 12:39, Corinna Vinschen wrote:
> > On Aug 3 11:27, Houder wrote:
> > > On 2018-08-03 09:36, Corinna Vinschen wrote:
> [snip]
>
> > > > In terms of x86_64, do we have to change the fenv stuff completely
> > > > to use only SSE opcodes? Does that
On 2018-08-03 14:00, Houder wrote:
[snip]
As far as I tell, it is neither the machine nor "fenv" that devices
to switch from x87 FPU to SSE ...
s/devices/decides/
Sorry.
On 2018-08-03 12:39, Corinna Vinschen wrote:
On Aug 3 11:27, Houder wrote:
On 2018-08-03 09:36, Corinna Vinschen wrote:
[snip]
> In terms of x86_64, do we have to change the fenv stuff completely
> to use only SSE opcodes? Does that make sense at all?
Ho! I have to disappoint you here! I
On Aug 3 11:27, Houder wrote:
> On 2018-08-03 09:36, Corinna Vinschen wrote:
> > Hi J.H.,
> >
> > Pushed with tweaks. The string in __asm__ statements works a
>
> Bah! Must be the heat! I did a compare (sdiff), but missed it. You
> are correct: the '\n' is required.
>
> > bit different and I
On 2018-08-03 11:27, Houder wrote:
I discovered a difference in behaviour between the x87 FPU and SSE.
When an exception is masked, a "default action" is carried out when
an exception occurs. At the same time the associated status flag is
set.
(the manual speaks about a "reasonable" default
On 2018-08-03 09:36, Corinna Vinschen wrote:
Hi J.H.,
Pushed with tweaks. The string in __asm__ statements works a
Bah! Must be the heat! I did a compare (sdiff), but missed it. You
are correct: the '\n' is required.
bit different and I made a slight change to the commit message.
No
Hi J.H.,
On Aug 3 01:45, J.H. van de Water wrote:
> fegetenv() in winsup/cygwin/fenv.cc
>
> fnstenv MUST be followed by fldenv in fegetenv(), as the former disables all
> exceptions in the x87 FPU, which is not appropriate here (fegetenv() ).
> fldenv after fnstenv should reload the x87 FPU w/
