/*
 * Copyright (c) 1983-2013 Trevor Wishart and Composers Desktop Project Ltd
 * http://www.trevorwishart.co.uk
 * http://www.composersdesktop.com
 *
 This file is part of the CDP System.

    The CDP System 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.

    The CDP System 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 the CDP System; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
    02111-1307 USA
 *
 */



/* GLOBAL */

int     filter_process(dataptr dz);
void    io_filtering(float *buf1,float *buf2,int chans,int n,
                        double *a,double *b,double *y,double *z,double *d,double *z1,double *ampl,dataptr dz);
int     filter_pconsistency(dataptr dz);
int     filter_preprocess(dataptr dz);
int     filter_process(dataptr dz);
int     iterating_filter(dataptr dz);
int     allocate_filter_frq_amp_arrays(int fltcnt,dataptr dz);
int             make_vfilt_data(dataptr dz);                                               /* TW March 2004      */
int             newfval2(double *fbrk,double *hbrk,dataptr dz);