Re: float ops and _controlfp_s
| From: | Pierre Joye | Date: | Sat, 13 Jun 2009 18:04:46 +0000 |
| Subject: | Re: float ops and _controlfp_s | ||
| References: | 1 2 | Groups: | php.internals |
| Request: | Send a blank email to internals+get-44266@lists.php.net to get a copy of this message | ||
hi,
On Sat, Jun 13, 2009 at 8:01 PM, Christian Seiler<chris_se@gmx.net> wrote:
> This ensures that FPUs on x86 systems are definitely in double precision
> mode. The default situation on Windows with MSVC is that the FPU is
> already in double precision setting as far as I've tested it - however
> there are situations (PHP embedded into a webserver for example) where
> this may not be true.
Should it not be a configure option then?
> Could you please provide some details for "significant performance impact"?
I will push the numbers online on Monday.
Cheers,
--
Pierre
http://blog.thepimp.net | http://www.libgd.org