From 92b9deaf8d7c2a96c3977e1204341d6b6feb1fc1 Mon Sep 17 00:00:00 2001
From: Franz Zotter <fzotter@users.sourceforge.net>
Date: Wed, 14 Jan 2009 10:58:32 +0000
Subject: renamed [mtx_sh] to [mtx_spherical_harmonics].

svn path=/trunk/externals/iem/iemmatrix/; revision=10549
---
 src/mtx_sh/chebyshev12.c | 75 ------------------------------------------------
 1 file changed, 75 deletions(-)
 delete mode 100644 src/mtx_sh/chebyshev12.c

(limited to 'src/mtx_sh/chebyshev12.c')

diff --git a/src/mtx_sh/chebyshev12.c b/src/mtx_sh/chebyshev12.c
deleted file mode 100644
index 2466ac0..0000000
--- a/src/mtx_sh/chebyshev12.c
+++ /dev/null
@@ -1,75 +0,0 @@
-/* 
- Evaluates all circular harmonics 
- at the angles phi up to the order nmax. 
- using the recurrence for the Chebyshev
- polynomials of the first and second kind
- T has the dimensions length(phi) x 2nmax+1
-
- 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"
-*/
-
-#include "mtx_sh/chebyshev12.h"
-
-Cheby12WorkSpace *chebyshev12_alloc(const size_t nmax, const size_t l) {
-   Cheby12WorkSpace *wc;
-   // memory allocation
-   if ((wc=(Cheby12WorkSpace*)calloc(1,sizeof(Cheby12WorkSpace)))!=0) {
-      wc->l=l;
-      wc->nmax=nmax;
-      if ((wc->t=(double*)calloc(l*(2*nmax+1),sizeof(double)))==0) {
-         free(wc);
-         return 0;
-      }
-      return wc;
-   }
-   return 0;
-}
-
-void chebyshev12_free(Cheby12WorkSpace *wc) {
-   if (wc!=0) {
-      free(wc->t);
-      free(wc);
-   }
-}
-
-void chebyshev12(double *phi, Cheby12WorkSpace *wc) {
-   int l,l0,n;
-   const int incr=2*wc->nmax+1;
-   double *cosphi;
-   double *sinphi;
-   // memory allocation
-   if ((wc!=0)&&(phi!=0)) {
-      if ((cosphi=(double*)calloc(wc->l,sizeof(double)))==0) {
-         return;
-      }
-      if ((sinphi=(double*)calloc(wc->l,sizeof(double)))==0) {
-         free(cosphi);
-         return;
-      }
-      // constants and initialization
-      for (l=0, l0=wc->nmax; l<wc->l; l++, l0+=incr) {
-         cosphi[l]=cos(phi[l]);
-         sinphi[l]=sin(phi[l]);
-         // initial value T_0=1
-         wc->t[l0]=1;
-         wc->t[l0+1]=cosphi[l];
-         wc->t[l0-1]=sinphi[l];
-      }
-      // recurrence for n>1
-      for (n=2; n<=wc->nmax; n++) {
-         for (l=0, l0=wc->nmax; l<wc->l; l++, l0+=incr) {
-            wc->t[l0+n]=cosphi[l]* wc->t[l0+n-1] - sinphi[l]* wc->t[l0-n+1];
-            wc->t[l0-n]=sinphi[l]* wc->t[l0+n-1] + cosphi[l]* wc->t[l0-n+1];
-         }
-      }
-      free(cosphi);
-      free(sinphi);
-   }
-}
-
-
-- 
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