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/*
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"
*/
#ifndef _chebyshev12_h__
#define _chebyshev12_h__
#include <math.h>
#include <stdlib.h>
typedef struct _Cheby12WorkSpace_
{
size_t nmax;
size_t l;
double *t;
} Cheby12WorkSpace;
Cheby12WorkSpace *chebyshev12_alloc(const size_t nmax, const size_t l);
void chebyshev12_free(Cheby12WorkSpace *wc);
void chebyshev12(double *phi, Cheby12WorkSpace *wc);
#endif
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