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@shBang #!/usr/bin/env python3
@*
SphericalBesselDimensionRepresentation.tmpl
Created by Graham Dennis on 2009-08-11.
Copyright (c) 2009-2012, Graham Dennis
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*@
@extends xpdeint.Geometry.BesselDimensionRepresentation
@from xpdeint.CallOnceGuards import callOnceGuard
@attr $uslib = ['gsl']
@attr $orderOffset = 0.5
@@callOnceGuard
@def includes
@#
#include <gsl/gsl_sf_bessel.h>
@#
@end def
@def besselJFunctionCall($order, $argument)
sqrt(1.0/M_PI_2) * @slurp
@if $order in [0, 1, 2]
gsl_sf_bessel_j${order}($argument)@slurp
@else
gsl_sf_bessel_jl($order, $argument)@slurp
@end if
@end def
@def stepWeightAtIndex($index)
@#
2.0 / (besselFactor * besselFactor * _besseljS_${parent.name} * _besseljS_${parent.name} * _besseljS_${parent.name}) * ${name}_max * ${name}_max * ${name}_max@slurp
@#
@end def
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