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/* -*- c++ -*- */
/*
* Copyright 2004,2009,2010,2012,2018 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 "multiply_impl.h"
#include <gnuradio/io_signature.h>
#include <volk/volk.h>
namespace gr {
namespace blocks {
template <class T>
typename multiply<T>::sptr multiply<T>::make(size_t vlen)
{
return gnuradio::get_initial_sptr(new multiply_impl<T> (vlen));
}
template <>
multiply_impl<float>::multiply_impl(size_t vlen)
: sync_block("multiply_ff",
io_signature::make (1, -1, sizeof(float)*vlen),
io_signature::make (1, 1, sizeof(float)*vlen)),
d_vlen(vlen)
{
const int alignment_multiple =
volk_get_alignment() / sizeof(float);
set_alignment(std::max(1, alignment_multiple));
}
template<>
int
multiply_impl<float>::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
float *out = (float *) output_items[0];
int noi = d_vlen*noutput_items;
memcpy(out, input_items[0], noi*sizeof(float));
for(size_t i = 1; i < input_items.size(); i++)
volk_32f_x2_multiply_32f(out, out, (float*)input_items[i], noi);
return noutput_items;
}
template <>
multiply_impl<gr_complex>::multiply_impl(size_t vlen)
: sync_block("multiply_cc",
io_signature::make (1, -1, sizeof(gr_complex)*vlen),
io_signature::make (1, 1, sizeof(gr_complex)*vlen)),
d_vlen(vlen)
{
const int alignment_multiple =
volk_get_alignment() / sizeof(gr_complex);
set_alignment(std::max(1, alignment_multiple));
}
template <>
int
multiply_impl<gr_complex>::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
gr_complex *out = (gr_complex *) output_items[0];
int noi = d_vlen*noutput_items;
memcpy(out, input_items[0], noi*sizeof(gr_complex));
for(size_t i = 1; i < input_items.size(); i++)
volk_32fc_x2_multiply_32fc(out, out, (gr_complex*)input_items[i], noi);
return noutput_items;
}
template <class T>
multiply_impl<T> ::multiply_impl(size_t vlen)
: sync_block ("multiply",
io_signature::make (1, -1, sizeof (T)*vlen),
io_signature::make (1, 1, sizeof (T)*vlen)),
d_vlen(vlen)
{
}
template <class T>
int
multiply_impl<T> ::work(int noutput_items,
gr_vector_const_void_star &input_items,
gr_vector_void_star &output_items)
{
T *optr = (T *) output_items[0];
int ninputs = input_items.size ();
for (size_t i = 0; i < noutput_items*d_vlen; i++){
T acc = ((T *) input_items[0])[i];
for (int j = 1; j < ninputs; j++)
acc *= ((T *) input_items[j])[i];
*optr++ = (T) acc;
}
return noutput_items;
}
template class multiply<std::int16_t>;
template class multiply<std::int32_t>;
template class multiply<gr_complex>;
template class multiply<float>;
} /* namespace blocks */
} /* namespace gr */
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