 a given degree L, this is explicitly calculated as:

       Sum_{i=1}^2 Sum_{m=0}^L C1(i, L+1, m+1) * conjg[C2(i, L+1, m+1)] / (2L
       + 1).


</PRE>
<H2 class="man">ARGUMENTS</H2 class="man"><PRE>
       C1            (input) COMPLEX*16, DIMENSION (2, LMAX+1, LMAX+1)

                     The first function expressed in complex spherical
                     harmonics.

       C2            (input) COMPLEX*16, DIMENSION (2, LMAX+1, LMAX+1)

                     The second function expressed in complex 