*
Copyright (C) 1996 Leif Laaksonen, Dage Sundholm *
Copyright (C) 1996-2010 Jacek Kobus *
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This program is free software; you can redistribute it and/or modify *
it under the terms of the GNU General Public License version 2 as *
published by the Free Software Foundation. *
*
### flp ###
It is assumed that function f(r) is tabulated at grid points r_i,
i=1,...,n which are stored in array r and the corresponding values
f_i are in array f.
The function fr0 uses the Lagrange polynomial of a given order to
calculate f(r0). The interpolation employs grid points adjacent to
r0.
iord - number of grid point used for interpolation
n - dimension of arrys r and f
r - array of abscissas
f - array of corresponding values of a given function f
r0 - an abscissa for which f(r0) is calculated via 8th-order
Lagrange polynomial |