Re: [ublas] binding_v1 vs sandbox/numeric/bindings

Subject: Re: [ublas] binding_v1 vs sandbox/numeric/bindings
From: Nizar Khalifa Sallem (nksallem_at_[hidden])
Date: 2010-11-10 15:38:23

At Wed, 10 Nov 2010 15:47:20 +0100,
Rutger ter Borg wrote:
> 
> On 11/10/2010 03:20 PM, Nizar Khalifa Sallem wrote:
> > Hi all,
> >
> > Can anyone tell me the difference between the numeric/bindings found
> > here: https://svn.boost.org/svn/boost/sandbox/numeric_bindings and the
> > ones at this location:
> > http://svn.boost.org/svn/boost/sandbox/numeric_bindings-v1/boost/numeric/bindings
> > cause I am getting really confused: which one should I use??? and if
> >
> > --
> > Nizar
> 
> Hello Nizar,
> 
> https://svn.boost.org/svn/boost/sandbox/numeric_bindings are the more 
> recent bindings, and this is the recommended project to use.
> 
> https://svn.boost.org/svn/boost/sandbox/numeric_bindings-v1 is the 
> somewhat older project. Still useable but has limitations in some cases.
> 
> Some highlights of the differences:
> 
> 1) Most of the algorithmic part of these bindings are generated based on 
> the original Fortran and/or C code. The BLAS and LAPACK bindings are 
> (way) more complete. Run-time and compile-time checks are way more 
> consistent and complete.
> 
> 2) Binding to containers has been made more flexible; i.e., it is 
> possible to pass vectors and/or matrices (or even scalars), as long as 
> their dimensions are correct. In addition, the bindings provide a couple 
> of in-place views, such as trans, row, etc..
> 
> 3) Different BLAS-backends have been merged into one frontend: the BLAS 
> bindings.
> 
> Hope this helps,
> Kind regards,
> 
> Rutger
> 
> 
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Thanks Rutger,

That was a complete answer and things are really clearer for me now. I
will follow your recommendation and use
https://svn.boost.org/svn/boost/sandbox/numeric_bindings. To do so I
need a little help: in numeric_binding-v1 the lapack methodes return
int but in numeric_bindings they return std::ptrdiff_t and I want to
know if the returned values remain the same? i.e. in
numeric_binding-v1 boost::numeric::bindings::lapack::gesdd returned an
int which is equal to 0 in case of success, does the
boost::numeric::bindings::lapack::gesdd in numeric_binding return 0
two in case of success? I couldn't find the realted documentation.

Thanks a lot,

--
Nizar