Interface operator(.dot.)

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Interface `operator(.dot.)`

$\begin{boxedminipage}{\textwidth} \begin{verbatim}prod = operator(.dot.)(mat... ...matrix2) dotpr = operator(.dot.)(this,other)\end{verbatim} \end{boxedminipage}$

Inner product of two vectors or two matrices. For two vectors $\mathbf{v}$ and $\mathbf{w}$ this is simply:

$\begin{displaymath} d = \sum_{i=1}^N v_i w_i \end{displaymath}$

For $N \times M$ matrices

and

it is defined similarily:

$\begin{displaymath} d = \sum_{i=1}^N \sum_{j=1}^M A_{ij} B_{ij} \end{displaymath}$

matrix1 -- real(dp), intent(in), dimension(:,:)

matrix2 -- real(dp), intent(in), dimension(:,:)

this, other -- real(dp), intent(in), dimension(:)

Return value -- real(dp)

operator(.feq.) interface

gabor 2009-06-30