Re: vecLib framework sample code
Re: vecLib framework sample code
- Subject: Re: vecLib framework sample code
- From: Tony Royal <email@hidden>
- Date: Tue, 4 Mar 2003 13:54:19 -0500
There is an excellent reference at
http://developer.apple.com/hardware/ve/vector_libraries.html. Download
the sample code for the Basic Linear Algebra Sub programs (BLAS).
On Tuesday, March 4, 2003, at 03:25 AM, Jim Jaeger wrote:
>
I've spent some time designing an application around matrix processing
>
to get the increased speed of the G4's vector processor. Now I need to
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learn how to use the vecLib framework to perform matrix inversion and
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multiplication.
>
>
I have worked through Hillegas, I've read the book and done all the
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exercises in Garfinkle and Mahoney, and I'm half way through Anguish
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et.al. (I gave up on the first edition of _Learning_Cocoa_ at page
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147). I have searched the Apple Developer web site for a simple
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tutorial on how to use vecLib for simple multiplication and inversion.
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Nothing tells me what I want to know.
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>
So far, I think I have learned that cblas_sgemm() will multiply two
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matrices for me, but I can find nothing that looks like it will do an
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inversion. The documentation I've been able to uncover is anything but
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clear. The header files I've found list the functions and parameters,
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but the naming conventions carefully hide the purpose of the functions
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[who would guess that cblas_sgemm() is a multiplication routine?].
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Tomorrow, I'll try again to read the BLAS report to see if I can learn
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how to read the function names.
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Can someone point me to a source of information on vecLib suitable for
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beginners at Cocoa and Obj-C? All I need to do is a few simple matrix
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multiplications and inversions for matrices up to 10x10, single
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precision.
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>
jim
>
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