/usr/include/SndObj/TpTz.h is in libsndobj-dev 2.6.7+ds1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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////////////////////////////////////////////////////////////////////////
// This file is part of the SndObj library
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Copyright (c)Victor Lazzarini, 1997-2004
// See License.txt for a disclaimer of all warranties
// and licensing information
////////////////////////////////////////////////
// TpTz.h: interface for the TpTz class
// two-pole two-zero filter.
//
///////////////////////////////////////////////
#ifndef _TPTZ_H
#define _TPTZ_H
#include "Filter.h"
class TpTz: public Filter {
protected:
double m_a1;
double m_a2;
public:
TpTz();
TpTz(double a, double a1, double a2,
double b1, double b2, SndObj* input,
int vecsize=DEF_VECSIZE, float sr=DEF_SR);
~TpTz();
void
SetParam(double a, double a1, double a2,
double b1, double b2){
m_a = a;
m_a1 = a1;
m_a2 = a2;
m_b2 = b2;
m_b1 = b1;
}
int Set(char* mess, float value);
short DoProcess();
};
#endif
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