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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