/usr/include/gnuradio/fxpt_vco.h is in gnuradio-dev 3.7.10.1-2+b3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 | /* -*- c++ -*- */
/*
* Copyright 2002,2004,2005,2013 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* GNU Radio 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 3, or (at your option)
* any later version.
*
* GNU Radio 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 GNU Radio; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street,
* Boston, MA 02110-1301, USA.
*/
#ifndef INCLUDED_GR_FXPT_VCO_H
#define INCLUDED_GR_FXPT_VCO_H
#include <gnuradio/api.h>
#include <gnuradio/fxpt.h>
#include <gnuradio/gr_complex.h>
namespace gr {
/*!
* \brief Voltage Controlled Oscillator (VCO)
* \ingroup misc
*/
class /*GR_RUNTIME_API*/ fxpt_vco {
int32_t d_phase;
public:
fxpt_vco () : d_phase(0) {}
~fxpt_vco() {}
// radians
void set_phase(float angle) {
d_phase = fxpt::float_to_fixed(angle);
}
void adjust_phase(float delta_phase) {
d_phase += fxpt::float_to_fixed(delta_phase);
}
float get_phase() const {
return fxpt::fixed_to_float(d_phase);
}
// compute sin and cos for current phase angle
void sincos(float *sinx, float *cosx) const
{
*sinx = fxpt::sin(d_phase);
*cosx = fxpt::cos(d_phase);
}
// compute complex sine a block at a time
void sincos(gr_complex *output, const float *input, int noutput_items,
float k, float ampl = 1.0)
{
for(int i = 0; i < noutput_items; i++) {
output[i] = gr_complex((float)(fxpt::cos(d_phase) * ampl),
(float)(fxpt::sin(d_phase) * ampl));
adjust_phase(input[i] * k);
}
}
// compute a block at a time
void cos(float *output, const float *input, int noutput_items, float k, float ampl = 1.0)
{
for(int i = 0; i < noutput_items; i++) {
output[i] = (float)(fxpt::cos(d_phase) * ampl);
adjust_phase(input[i] * k);
}
}
// compute cos or sin for current phase angle
float cos() const { return fxpt::cos(d_phase); }
float sin() const { return fxpt::sin(d_phase); }
};
} /* namespace gr */
#endif /* INCLUDED_GR_FXPT_VCO_H */
|