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  Vote for faster Math!  (Read 1392 times)
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Offline Herkules

Senior Member




Friendly fire isn't friendly!


« Posted 2004-08-27 13:12:17 »

If I got that right, double math performance has been significantly degraded by the decision to use StrictMath only.

http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=5005861

Shouldn't that effect vecmath.jar?

HARDCODE    --     DRTS/FlyingGuns/JPilot/JXInput  --    skype me: joerg.plewe
Offline Azeem Jiva

Junior Member




Java VM Engineer, Sun Microsystems


« Reply #1 - Posted 2004-08-27 16:02:41 »

Not really, hotspot creates intrinsics for various transcendentals and trig functions.  So while its true that TAN is not intrsinfied (I'm working on it), SIN, COS, LN, LOG10, etc all are.  
Offline Herkules

Senior Member




Friendly fire isn't friendly!


« Reply #2 - Posted 2004-08-27 22:23:30 »

So this bug_id is going to be resolved??

In Tiger?

HARDCODE    --     DRTS/FlyingGuns/JPilot/JXInput  --    skype me: joerg.plewe
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Offline Azeem Jiva

Junior Member




Java VM Engineer, Sun Microsystems


« Reply #3 - Posted 2004-08-27 22:49:31 »

Tiger is done, its almost ready to ship.  Anything that needs to be fixed will have to wait for the next version of Java.  But hopefully it will be resolved soon
Offline swpalmer

JGO Coder




Where's the Kaboom?


« Reply #4 - Posted 2004-08-30 01:17:19 »

Quote
Not really, hotspot creates intrinsics for various transcendentals and trig functions.  So while its true that TAN is not intrsinfied (I'm working on it), SIN, COS, LN, LOG10, etc all are.  


Where do I get a log10 function?  The Math class does not define one, so I've always written one in terms of base conversion from base 'e'.  Am I missing something?

Offline Mark Thornton

Senior Member





« Reply #5 - Posted 2004-08-30 10:11:08 »

A log10 method has been added (to java.Math) in Tiger.
Offline swpalmer

JGO Coder




Where's the Kaboom?


« Reply #6 - Posted 2004-09-01 00:33:32 »

Ah.  Cool.  Though it's going to make it easy to accidentally write code that won't run on 1.4.  Smiley

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