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Subject: Re: [ublas] problem regards to using boost binding library for svd in lapack under vc 9.0
From: Jesse Perla (jesseperla_at_[hidden])
Date: 2009-04-22 07:59:41


2009/4/22 Jianshu Zhang <sago_vinson_at_[hidden]>

> However, there is one thing confused me. The following codes will give an
> assertion fail until I specify the svd function to gesdd('A',A, S, U, V) or
> gesdd(A, S). Therefore I'm confused by the jobz option. Can somebody simply
> explain about the "O","N","A","S" option?
>

Since the LAPACK at this level are a fairly thin wrapper around LAPACK, you
generally have to delve into the fortran LAPACK documents for details.
 There are many references (I find the Intel MKL reference the best):
http://www.intel.com/software/products/mkl/docs/WebHelp/lse/functn_gesdd.html