NNPNTEND - terminate interpolation in single point mode

       To use NNPNTEND, load the NCAR Graphics library ngmath.

       Copyright (C) 2000
       University Corporation for Atmospheric Research

       The use of this Software is governed by a License Agreement.

UNIX                                             March 1997-1998                                NNPNTEND(3NCARG)

       NNPNTEND - terminate interpolation in single point mode

       natgrid, natgrid_params, natgrids, nnpntinits, nnpnts.

       Complete documentation for Natgrid is available at URL
       http://ngwww.ucar.edu/ngdoc/ng/ngmath/natgrid/nnhome.html

       CALL NNPNTEND ()

       This subroutine terminates single point mode.  It should be called after entering single point mode using
       NNPNTINITS and interpolating at individual points with NNPNTS.