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the parameters of the blas

PostPosted: Fri Feb 09, 2007 10:03 am
by serlancelot
Hi everybody
I really need help, I'm desperate. :cry:
I was able to find (http://www.netlib.org/blas/index.html) the whole list with all the bleas routines, divided in the three groups (first level, second level, third level), I can open each of them, watching each code, but I still couldn't find anywhere an explanation of the formal parameters ("dummies"), i.e. what I must put in when I call one in a program. And I think it's quite difficult trying to understand it reading directly the codes of the routines, because I think they are actually counterintuitive
For exemple:http://www.netlib.org/blas/sscal.f
What do the parameters mean? What is one and the other?
And:http://www.netlib.org/blas/dcopy.f

Can someone help me? Thank you so much

PostPosted: Fri Feb 09, 2007 10:54 am
by Julie
Hi,

The BLAS was written a long time ago and it is true that some BLAS1/BLAS2 routines do not have a precise description of the parameters.
There are tones of documentation on BLAS routines...but one that is online is I think is very nicely done is the one for the BLAS IBM library.

For the BLAS1 documentation go to: http://publib.boulder.ibm.com/infocenter/pseries/v5r3/topic/com.ibm.aix.genprogc/doc/genprogc/ls_fortran_blas_vector_vector_subr.htm?resultof=%22%42%4c%41%53%22%20%22%62%6c%61%22%20
Click "Next" to get BLAS2 routines and "Next" again to get BLAS3 routines.

Hope it helps
Julie

PostPosted: Fri Feb 09, 2007 11:12 am
by serlancelot
thank you
you are wonderful
thanks alot :)