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Re: [Help-gsl] return value of matrix operations


From: Thomas Weber
Subject: Re: [Help-gsl] return value of matrix operations
Date: Fri, 26 Feb 2010 08:52:11 +0100
User-agent: Mutt/1.5.18 (2008-05-17)

On Fri, Feb 26, 2010 at 01:36:50AM -0500, kamaraju kusumanchi wrote:
> I am a bit confused about where the result of a matrix operation
> function is stored. For example consider gsl_matrix_add as described
> in http://www.gnu.org/software/gsl/manual/html_node/Matrix-operations.html.
> 
> Function: int gsl_matrix_add (gsl_matrix * a, const gsl_matrix * b)
> 
>     This function adds the elements of matrix b to the elements of
> matrix a, a'(i,j) = a(i,j) + b(i,j). The two matrices must have the
> same dimensions.

Actually, the help text is clearer than the formula: 
"adds the elements of matrix b to the elements of matrix a"

So, after the call, you have a different matrix a then before.

        Thomas




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