From 55253e4e15b093a0826fc10b376f7724cea2ba7e Mon Sep 17 00:00:00 2001 From: Franz Zotter Date: Mon, 12 Jan 2009 17:09:13 +0000 Subject: added [mtx_sh] for spherical harmonics evaluation. svn path=/trunk/externals/iem/iemmatrix/; revision=10515 --- src/mtx_sh/sharmonics_normalization.h | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 src/mtx_sh/sharmonics_normalization.h (limited to 'src/mtx_sh/sharmonics_normalization.h') diff --git a/src/mtx_sh/sharmonics_normalization.h b/src/mtx_sh/sharmonics_normalization.h new file mode 100644 index 0000000..f837233 --- /dev/null +++ b/src/mtx_sh/sharmonics_normalization.h @@ -0,0 +1,31 @@ +/* + * Recursive computation of (arbitrary degree) normalization constants + * for spherical harmonics, 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, 2008. + * + * This code is published under the Gnu General Public License, see + * "LICENSE.txt" + */ + + +#ifndef _sharmonics_normalization_h__ +#define _sharmonics_normalization_h__ +#include +#include + +typedef struct _SHNorml_ +{ + double *n; + size_t nmax; +} SHNorml; + +SHNorml *sharmonics_normalization_new (const size_t nmax); + +void sharmonics_normalization_free (SHNorml *wn); + +#endif -- cgit v1.2.1