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/* -*- c++ -*- */
/*
* Copyright 2017 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <gnuradio/io_signature.h>
#include "exponentiate_const_cci_impl.h"
#include <volk/volk.h>
namespace gr {
namespace blocks {
exponentiate_const_cci::sptr
exponentiate_const_cci::make(int exponent, size_t vlen)
{
return gnuradio::get_initial_sptr
(new exponentiate_const_cci_impl(exponent, vlen));
}
/*
* The private constructor
*/
exponentiate_const_cci_impl::exponentiate_const_cci_impl(int exponent, size_t vlen)
: gr::sync_block("exponentiate_const_cci",
gr::io_signature::make(1, -1, sizeof(gr_complex)*vlen),
gr::io_signature::make(1, -1, sizeof(gr_complex)*vlen)),
d_exponent(exponent),
d_vlen(vlen)
{
const int alignment_multiple = volk_get_alignment()/sizeof(gr_complex);
set_alignment(std::max(1, alignment_multiple));
}
/*
* Our virtual destructor.
*/
exponentiate_const_cci_impl::~exponentiate_const_cci_impl()
{
}
bool
exponentiate_const_cci_impl::check_topology(int ninputs, int noutputs)
{
return ninputs == noutputs;
}
void
exponentiate_const_cci_impl::set_exponent(int exponent) {
gr::thread::scoped_lock guard(d_setlock);
d_exponent = exponent;
}
int
exponentiate_const_cci_impl::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
gr::thread::scoped_lock guard(d_setlock);
for(unsigned int i = 0; i < input_items.size(); i++) {
const gr_complex *in = (const gr_complex *) input_items[i];
gr_complex *out = (gr_complex *) output_items[i];
if(d_exponent > 1) {
volk_32fc_x2_multiply_32fc(out, in, in, noutput_items*d_vlen);
for(int j = 2; j < d_exponent; j++) {
volk_32fc_x2_multiply_32fc(out, out, in, noutput_items*d_vlen);
}
}
else {
memcpy(out, in, sizeof(gr_complex)*noutput_items*d_vlen);
}
}
// Tell runtime system how many output items we produced.
return noutput_items;
}
} /* namespace blocks */
} /* namespace gr */
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