mirror of https://github.com/gnss-sdr/gnss-sdr
66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
/*!
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* \file benchmark_atan2.cc
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* \brief Benchmark for atan2 implementations
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* \author Carles Fernandez-Prades, 2022. cfernandez(at)cttc.es
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*
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*
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* -----------------------------------------------------------------------------
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*
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* GNSS-SDR is a Global Navigation Satellite System software-defined receiver.
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* This file is part of GNSS-SDR.
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*
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* Copyright (C) 2022 (see AUTHORS file for a list of contributors)
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* SPDX-License-Identifier: GPL-3.0-or-later
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*
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* -----------------------------------------------------------------------------
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*/
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#include <benchmark/benchmark.h>
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#include <gnuradio/math.h>
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#include <cmath>
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#include <random>
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void bm_std_atan2(benchmark::State& state)
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{
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std::random_device rd;
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std::default_random_engine e2(rd());
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std::uniform_real_distribution<> dist(-1.0, 1.0);
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float a = dist(e2);
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float b = dist(e2);
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float c;
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while (state.KeepRunning())
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{
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c = std::atan2(a, b);
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}
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if (c > 1.0)
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{
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// Avoid unused-but-set-variable warning
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}
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}
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void bm_gr_fast_atan2f(benchmark::State& state)
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{
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std::random_device rd;
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std::default_random_engine e2(rd());
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std::uniform_real_distribution<> dist(-1.0, 1.0);
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float a = dist(e2);
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float b = dist(e2);
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float c;
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while (state.KeepRunning())
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{
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c = gr::fast_atan2f(a, b);
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}
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if (c > 1.0)
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{
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// Avoid unused-but-set-variable warning
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}
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}
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BENCHMARK(bm_std_atan2);
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BENCHMARK(bm_gr_fast_atan2f);
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BENCHMARK_MAIN();
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