• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Re: Convert to float and more
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Convert to float and more


  • Subject: Re: Convert to float and more
  • From: Darrin Cardani <email@hidden>
  • Date: Thu, 5 Jun 2003 09:20:25 -0500

At 9:35 AM +0200 6/5/03, Urs Heckmann wrote:
Wouldn't it be nice to publish a small tutorial with ultra-optimized example code and tricks for common problems? I.e.:

sin-cos approximation (getting both values at once)

Go to: http://www.shellandslate.com/ and click on "Research" at the top, then click on "Computer Math 101" on the left side. I'd love to see some of these written up as AltiVec routines that can do an array's worth at a time. That would probably offer some significant speedups for certain types of processing.

pow( 2, x )

You mean just shifting, or do you mean fractional powers, too?

(float) int

Well, we just discussed this, didn't we? :-)

(int) float

I am interested in how this is generally done when the processor doesn't have a nice instruction for it.

Thanks,
Darrin
--
Darrin Cardani - email@hidden
President, Buena Software, Inc.
<http://www.buena.com/>
Video, Image and Audio Processing Development
_______________________________________________
coreaudio-api mailing list | email@hidden
Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/coreaudio-api
Do not post admin requests to the list. They will be ignored.

  • Follow-Ups:
    • Re: Convert to float and more
      • From: Urs Heckmann <email@hidden>
References: 
 >Re: Convert to float and more (From: Urs Heckmann <email@hidden>)

  • Prev by Date: Re: High Pass Filter example?
  • Next by Date: Re: Convert to float and more
  • Previous by thread: Re: Convert to float and more
  • Next by thread: Re: Convert to float and more
  • Index(es):
    • Date
    • Thread