Re: (x * x) % y

Alex Alten (Alten@home.com)
Sun, 25 Apr 1999 22:50:19 -0700

• Next message: Bill Stewart: "Re: (x * x) % y"
• Previous message: William H. Geiger III: "Risks of running mixmaster on dialup account?"
• In reply to: Mail System Internal Data: "DON'T DELETE THIS MESSAGE -- FOLDER INTERNAL DATA"
• Next in thread: James H. Cloos Jr.: "Re: (x * x) % y"

At 07:49 AM 4/24/99 +0800, Enzo Michelangeli wrote:>-----Original Message----
>
>...again produces the lame code with calls to __allmul and __allrem.
>
>Well, it looks like Microsoft's support for 64-bit integers has room for
>improvements...

As of MSVC 4.2 they hadn't yet provided optimization support for the MMX
instructions. However they do provide inline assembly support for them.
These instructions can use the floating point 64 bit registers for
integer multiplication (I don't know about integer division).

- Alex

--
Alex Alten
Alten@Home.Com
Alten@TriStrata.Com
P.O. Box 11406
Pleasanton, CA  94588  USA
(925) 417-0159

• Next message: Bill Stewart: "Re: (x * x) % y"
• Previous message: William H. Geiger III: "Risks of running mixmaster on dialup account?"
• In reply to: Mail System Internal Data: "DON'T DELETE THIS MESSAGE -- FOLDER INTERNAL DATA"
• Next in thread: James H. Cloos Jr.: "Re: (x * x) % y"