71 lines
2 KiB
C++
71 lines
2 KiB
C++
// SPDX-License-Identifier: BSD-2-Clause
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// This code is part of the sfizz library and is licensed under a BSD 2-clause
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// license. You should have receive a LICENSE.md file along with the code.
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// If not, contact the sfizz maintainers at https://github.com/sfztools/sfizz
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#include "MathHelpers.h"
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#include <benchmark/benchmark.h>
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#include <vector>
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#include <random>
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class RandomFill : public benchmark::Fixture {
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public:
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void SetUp(const ::benchmark::State& state) {
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output = std::vector<float>(state.range(0));
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}
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void TearDown(const ::benchmark::State& state) {
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UNUSED(state);
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}
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std::vector<float> output;
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};
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BENCHMARK_DEFINE_F(RandomFill, StdRandom)(benchmark::State& state) {
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std::minstd_rand prng;
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std::uniform_real_distribution<float> dist(0.0f, 1.0f);
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for (auto _ : state)
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{
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for (float &out : output)
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out = dist(prng);
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}
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}
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BENCHMARK_DEFINE_F(RandomFill, FastRandom)(benchmark::State& state) {
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fast_rand prng;
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fast_real_distribution<float> dist(0.0f, 1.0f);
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for (auto _ : state)
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{
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for (float &out : output)
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out = dist(prng);
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}
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}
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BENCHMARK_DEFINE_F(RandomFill, StdRandomBipolar)(benchmark::State& state) {
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std::minstd_rand prng;
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std::uniform_real_distribution<float> dist(-1.0f, 1.0f);
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for (auto _ : state)
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{
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for (float &out : output)
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out = dist(prng);
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}
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}
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BENCHMARK_DEFINE_F(RandomFill, FastRandomBipolar)(benchmark::State& state) {
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fast_rand prng;
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fast_real_distribution<float> dist(-1.0f, 1.0f);
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for (auto _ : state)
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{
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for (float &out : output)
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out = dist(prng);
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}
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}
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BENCHMARK_REGISTER_F(RandomFill, StdRandom)->RangeMultiplier(4)->Range(1 << 2, 1 << 12);
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BENCHMARK_REGISTER_F(RandomFill, StdRandomBipolar)->RangeMultiplier(4)->Range(1 << 2, 1 << 12);
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BENCHMARK_REGISTER_F(RandomFill, FastRandom)->RangeMultiplier(4)->Range(1 << 2, 1 << 12);
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BENCHMARK_REGISTER_F(RandomFill, FastRandomBipolar)->RangeMultiplier(4)->Range(1 << 2, 1 << 12);
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