renamed [mtx_sh] to [mtx_spherical_harmonics].

svn path=/trunk/externals/iem/iemmatrix/; revision=10549

1 files changed, 0 insertions, 60 deletions

diff --git a/src/mtx_sh/sharmonics_normalization.c b/src/mtx_sh/sharmonics_normalization.c
deleted file mode 100644
index c59aa14..0000000
--- a/src/mtx_sh/sharmonics_normalization.c
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * 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, 2007.
- *
- * This code is published under the Gnu General Public License, see
- * "LICENSE.txt"
- */
-
-#include "mtx_sh/sharmonics_normalization.h"
-
-SHNorml *sharmonics_normalization_new (const size_t nmax) {
-   SHNorml *wn;
-   int n,n0,m;
-   const double oneoversqrt2 = 1.0/sqrt(2);
-   
-   // memory allocation
-   if ((wn=(SHNorml*)calloc(1,sizeof(SHNorml)))!=0) {
-      wn->nmax=nmax;
-      if ((wn->n=(double*)calloc((nmax+1)*(nmax+2)/2,sizeof(double)))==0) {
-         free(wn);
-         wn=0;
-      }
-      else {
-         // computing N_n^m for m=0, wrongly normalized
-         wn->n[0]=sqrt(1/(2*M_PI));
-         for (n=1,n0=1; n<=nmax; n++) {
-            wn->n[n0]=wn->n[0] * sqrt(2*n+1);
-            n0+=n+1;
-         }
-         // computing N_n^m for 0<m<=n
-         for (n=1,n0=1; n<=nmax; n++) {
-            for (m=1; m<=n; m++) {
-               wn->n[n0+m]= - wn->n[n0+m-1] / sqrt((n+m)*(n-m+1));
-            }
-            n0+=n+1;
-         }
-         // correcting normalization of N_n^0
-         for (n=0,n0=0; n<=nmax; n++) {
-            wn->n[n0]*=oneoversqrt2;
-            n0+=n+1;
-         }
-      }
-   }
-   return wn;
-}
-
-void sharmonics_normalization_free(SHNorml *wn) {
-   if (wn!=0) {
-      free(wn->n);
-      free(wn);
-   }
-}
-
-