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* Copyright (c) 2015, 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
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*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package micro.benchmarks;
import java.util.Random;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.Warmup;
import org.graalvm.compiler.microbenchmarks.graal.GraalBenchmark;
/**
* Benchmarks cost of Math intrinsics.
*/
public class MathFunctionBenchmark extends GraalBenchmark {
@State(Scope.Benchmark)
public static class ThreadState {
double[] data = randomDoubles(100);
double[] result = new double[100];
static double[] randomDoubles(int len) {
double[] data = new double[len];
Random r = new Random();
for (int i = 0; i < data.length; i++) {
data[i] = r.nextDouble();
}
return data;
}
}
@Benchmark
@Warmup(iterations = 5)
public void mathLog(ThreadState state) {
double[] data = state.data;
for (int i = 0; i < data.length; i++) {
double[] result = state.result;
result[i] = Math.log(data[i]);
}
}
@Benchmark
@Warmup(iterations = 5)
public void mathLog10(ThreadState state) {
double[] data = state.data;
for (int i = 0; i < data.length; i++) {
double[] result = state.result;
result[i] = Math.log10(data[i]);
}
}
@Benchmark
@Warmup(iterations = 5)
public void mathSin(ThreadState state) {
double[] data = state.data;
for (int i = 0; i < data.length; i++) {
double[] result = state.result;
result[i] = Math.sin(data[i]);
}
}
@Benchmark
@Warmup(iterations = 5)
public void mathCos(ThreadState state) {
double[] data = state.data;
for (int i = 0; i < data.length; i++) {
double[] result = state.result;
result[i] = Math.cos(data[i]);
}
}
@Benchmark
@Warmup(iterations = 5)
public void mathTan(ThreadState state) {
double[] data = state.data;
for (int i = 0; i < data.length; i++) {
double[] result = state.result;
result[i] = Math.tan(data[i]);
}
}
}