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/*
clfilt.h:
Copyright (C) 2002 Erik Spjut
This file is part of Csound.
The Csound Library is free software; you can redistribute it
and/or modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
Csound is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with Csound; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
02110-1301 USA
*/
/* clfilt.h */
#define CL_LIM 40 /* The limit on the number of biquadratic sections */
/* Structure for biquadratic filter */
typedef struct {
OPDS h;
MYFLT *out, *in, *freq, *lohi, *npol, *kind, *pbr, *sbr, *reinit;
MYFLT xnm1[CL_LIM], xnm2[CL_LIM], ynm1[CL_LIM], ynm2[CL_LIM],
alpha[CL_LIM], beta[CL_LIM], odelta2[CL_LIM],
b0[CL_LIM], b1[CL_LIM], b2[CL_LIM],
a0[CL_LIM], a1[CL_LIM], a2[CL_LIM], prvfreq;
int32_t ilohi, nsec, ikind;
} CLFILT;
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