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/* -*- c++ -*- */
/*
* Copyright 2011,2013 Free Software Foundation, Inc.
*
* This file is part of GNU Radio
*
* SPDX-License-Identifier: GPL-3.0-or-later
*
*/
#include "transcendental_impl.h"
#include <gnuradio/io_signature.h>
#include <cmath> //real math
#include <complex> //complex math
#include <map>
#include <stdexcept>
namespace gr {
namespace blocks {
/***********************************************************************
* work function creation and registration
**********************************************************************/
struct map_val_type {
work_fcn_type work_fcn;
size_t io_size;
};
typedef std::map<std::string, map_val_type> map_type;
// construct map on first use idiom
static map_type& get_map(void)
{
static map_type map;
return map;
}
// static initialization of this object registers a function
struct transcendental_registrant {
transcendental_registrant(const std::string& key,
const work_fcn_type& work_fcn,
const size_t io_size)
{
map_val_type val;
val.work_fcn = work_fcn;
val.io_size = io_size;
get_map()[key] = val;
}
};
// macro to create a work function and register it
#define REGISTER_FUNCTION(__fcn__, __type__, __key__) \
static int __key__##_work(int noutput_items, \
gr_vector_const_void_star& input_items, \
gr_vector_void_star& output_items) \
{ \
const __type__* in = (const __type__*)input_items[0]; \
__type__* out = (__type__*)output_items[0]; \
for (size_t i = 0; i < size_t(noutput_items); i++) { \
out[i] = std::__fcn__(in[i]); \
} \
return noutput_items; \
} \
transcendental_registrant __key__##_registrant( \
#__key__, &__key__##_work, sizeof(__type__));
// register work functions for real types
#define REGISTER_REAL_FUNCTIONS(__fcn__) \
REGISTER_FUNCTION(__fcn__, float, __fcn__##_float) \
REGISTER_FUNCTION(__fcn__, double, __fcn__##_double)
// register work functions for complex types
#define REGISTER_COMPLEX_FUNCTIONS(__fcn__) \
REGISTER_FUNCTION(__fcn__, std::complex<float>, __fcn__##_complex_float) \
REGISTER_FUNCTION(__fcn__, std::complex<double>, __fcn__##_complex_double)
// register both complex and real
#define REGISTER_FUNCTIONS(__fcn__) \
REGISTER_REAL_FUNCTIONS(__fcn__) \
REGISTER_COMPLEX_FUNCTIONS(__fcn__)
// create and register transcendental work functions
REGISTER_FUNCTIONS(cos)
REGISTER_FUNCTIONS(sin)
REGISTER_FUNCTIONS(tan)
REGISTER_REAL_FUNCTIONS(acos)
REGISTER_REAL_FUNCTIONS(asin)
REGISTER_REAL_FUNCTIONS(atan)
REGISTER_FUNCTIONS(cosh)
REGISTER_FUNCTIONS(sinh)
REGISTER_FUNCTIONS(tanh)
REGISTER_FUNCTIONS(exp)
REGISTER_FUNCTIONS(log)
REGISTER_FUNCTIONS(log10)
REGISTER_FUNCTIONS(sqrt)
transcendental::sptr transcendental::make(const std::string& name,
const std::string& type)
{
// search for an entry in the map
const std::string key = name + "_" + type;
const bool has_key = get_map().count(key) != 0;
if (!has_key)
throw std::runtime_error("could not find transcendental function for " + key);
// make a new block with found work function
return gnuradio::make_block_sptr<transcendental_impl>(get_map()[key].work_fcn,
get_map()[key].io_size);
}
transcendental_impl::transcendental_impl(const work_fcn_type& work_fcn,
const size_t io_size)
: sync_block("transcendental",
io_signature::make(1, 1, io_size),
io_signature::make(1, 1, io_size)),
_work_fcn(work_fcn)
{
// NOP
}
transcendental_impl::~transcendental_impl() {}
int transcendental_impl::work(int noutput_items,
gr_vector_const_void_star& input_items,
gr_vector_void_star& output_items)
{
return _work_fcn(noutput_items, input_items, output_items);
}
} /* namespace blocks */
} /* namespace gr */
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