Function cosine

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Function `cosine`

$\begin{boxedminipage}{\textwidth} \begin{verbatim}c = cosine(this,i,j,k)\end{verbatim} \end{boxedminipage}$

Cosine of the angle j-i-k

this -- type(Atoms), intent(in)

i, j, k -- integer, intent(in)

Return value -- real(dp)

cosine_neighbour function

gabor 2009-06-30