mirror of
https://github.com/openjdk/jdk.git
synced 2026-01-28 12:09:14 +00:00
77 lines
2.9 KiB
Java
77 lines
2.9 KiB
Java
/*
|
|
* Copyright (c) 2023, Azul Systems, Inc. All rights reserved.
|
|
* Copyright (c) 2025, 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
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* 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.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*/
|
|
package org.openjdk.bench.vm.floatingpoint;
|
|
|
|
import org.openjdk.jmh.annotations.Benchmark;
|
|
import org.openjdk.jmh.annotations.BenchmarkMode;
|
|
import org.openjdk.jmh.annotations.Mode;
|
|
import org.openjdk.jmh.annotations.OperationsPerInvocation;
|
|
import org.openjdk.jmh.annotations.OutputTimeUnit;
|
|
import org.openjdk.jmh.annotations.Scope;
|
|
import org.openjdk.jmh.annotations.Setup;
|
|
import org.openjdk.jmh.annotations.State;
|
|
|
|
import java.util.Random;
|
|
import java.util.concurrent.TimeUnit;
|
|
|
|
/**
|
|
* Tests for float and double modulo.
|
|
* Testcase is based on: https://github.com/cirosantilli/java-cheat/blob/c5ffd8ea19c5620ce752b6c98b2d3579be2bef98/Nan.java
|
|
*/
|
|
@BenchmarkMode(Mode.AverageTime)
|
|
@OutputTimeUnit(TimeUnit.NANOSECONDS)
|
|
@State(Scope.Thread)
|
|
public class DremFrem {
|
|
|
|
private static final int DEFAULT_X_RANGE = 1 << 11;
|
|
private static final int DEFAULT_Y_RANGE = 1 << 11;
|
|
private static boolean regressionValue = false;
|
|
|
|
@Benchmark
|
|
@OperationsPerInvocation(DEFAULT_X_RANGE * DEFAULT_Y_RANGE)
|
|
public void calcFloatJava() {
|
|
for (int i = 0; i < DEFAULT_X_RANGE; i++) {
|
|
for (int j = DEFAULT_Y_RANGE; j > 0; j--) {
|
|
float x = i;
|
|
float y = j;
|
|
boolean result = (13.0F * x * x * x) % y == 1.0F;
|
|
regressionValue = regressionValue & result;
|
|
}
|
|
}
|
|
}
|
|
|
|
@Benchmark
|
|
@OperationsPerInvocation(DEFAULT_X_RANGE * DEFAULT_Y_RANGE)
|
|
public void calcDoubleJava() {
|
|
for (int i = 0; i < DEFAULT_X_RANGE; i++) {
|
|
for (int j = DEFAULT_Y_RANGE; j > 0; j--) {
|
|
double x = i;
|
|
double y = j;
|
|
boolean result = (13.0D * x * x * x) % y == 1.0D;
|
|
regressionValue = regressionValue & result;
|
|
}
|
|
}
|
|
}
|
|
}
|