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Re: Accelerate library

Well, I spent quite a while on ADC and came up empty-handed.
I actually wrote my own routine that did the job, and generated really similar code. But I would rather call out to an Apple routine instead of making my own, since they have the opportunity to super-fine-tune it or redesign it when a new CPU type comes out.
Honestly, I was also hoping that vSaxpy would work on G3s as well, sparing me the effort of writing separate code for G3s and G4s. I was under the impression that Accelerate would work on G3s, just more slowly. But looking at the implementation in gdb, it sure looks like it requires a G4 just to get off the ground. (Unless Mach loads in a different library entirely for G3s...??)


On Oct 26, 2004, at 7:51 PM, David Duncan wrote:

On Oct 26, 2004, at 10:37 PM, John Stiles wrote:

OK, that's awesome. Thank you.
Now, the $100,000 question--how could I have figured this out on my own?


AFAIK, Header spelunking. And having intimate knowledge of what Altivec already can do (spent quite a bit of time with it in undergrad...). The sole mention of vSaxpy() on Apple's site seems to be in the Carbon porting spec.

Can I have my $100,000 now? :)
--
Reality is what, when you stop believing in it, doesn't go away.
Failure is not an option. It is a privilege reserved for those who try.

David Duncan

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References: 
 >Accelerate library (From: John Stiles <email@hidden>)
 >Re: Accelerate library (From: David Duncan <email@hidden>)
 >Re: Accelerate library (From: John Stiles <email@hidden>)
 >Re: Accelerate library (From: David Duncan <email@hidden>)



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