From 8b5c07f8055d6888459fd662c85f706ef84e0471 Mon Sep 17 00:00:00 2001 From: Franz Zotter Date: Sun, 11 Oct 2009 21:22:05 +0000 Subject: added [mtx_spherical_radial], the radial functions of the spherical base-solutions svn path=/trunk/externals/iem/iemmatrix/; revision=12577 --- src/mtx_spherical_harmonics/sph_radial.h | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 src/mtx_spherical_harmonics/sph_radial.h (limited to 'src/mtx_spherical_harmonics/sph_radial.h') diff --git a/src/mtx_spherical_harmonics/sph_radial.h b/src/mtx_spherical_harmonics/sph_radial.h new file mode 100644 index 0000000..43661ce --- /dev/null +++ b/src/mtx_spherical_harmonics/sph_radial.h @@ -0,0 +1,26 @@ +/* + * Recursive computation of (arbitrary degree) spherical Bessel/Neumann/Hankel functions, + * according to Gumerov and Duraiswami, + * "The Fast Multipole Methods for the Helmholtz Equation in Three Dimensions", + * Elsevier, 2005. + * + * Implementation by Franz Zotter, Institute of Electronic Music and Acoustics + * (IEM), University of Music and Dramatic Arts (KUG), Graz, Austria + * http://iem.at/Members/zotter, 2007. + * + * This code is published under the Gnu General Public License, see + * "LICENSE.txt" + */ + +#ifndef __SPH_RADIAL_H__ +#define __SPH_RADIAL_H__ + +void sphBessel (double x, double *y, int n); + +void sphNeumann (double x, double *y, int n); + +void sphBesselDiff (double x, double *y, int n); + +void sphNeumannDiff (double x, double *y, int n); + +#endif // __SPH_RADIAL_H__ -- cgit v1.2.1