106 lines
3.4 KiB
Java
106 lines
3.4 KiB
Java
/*
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* Copyright (c) 2021, Red Hat, Inc. All rights reserved.
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* Copyright (c) 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @key randomness
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* @bug 8273454
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* @summary Test transformation (-a)*(-b) = a*b
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*
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* @library /test/lib
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*
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* @run main/othervm -XX:-TieredCompilation -XX:-BackgroundCompilation -XX:-UseOnStackReplacement -XX:CompileCommand=dontinline,TestNegMultiply::test* TestNegMultiply
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*
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*/
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import java.util.Random;
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import jdk.test.lib.Utils;
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import jdk.test.lib.Asserts;
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public class TestNegMultiply {
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private static final Random random = Utils.getRandomInstance();
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// Enough cycles to ensure test methods are JIT-ed
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private static final int TEST_COUNT = 20_000;
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private static int testInt(int a, int b) {
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return (-a) * (-b);
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}
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private static long testLong(long a, long b) {
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return (-a) * (-b);
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}
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private static float testFloat(float a, float b) {
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return (-a) * (-b);
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}
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private static double testDouble(double a, double b) {
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return (-a) * (-b);
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}
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private static void runIntTests() {
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for (int index = 0; index < TEST_COUNT; index ++) {
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int a = random.nextInt();
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int b = random.nextInt();
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int expected = (-a) * (-b);
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int res = testInt(a, b);
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Asserts.assertEQ(res, expected);
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}
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}
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private static void runLongTests() {
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for (int index = 0; index < TEST_COUNT; index ++) {
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long a = random.nextLong();
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long b = random.nextLong();
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long expected = (-a) * (-b);
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long res = testLong(a, b);
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Asserts.assertEQ(res, expected);
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}
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}
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private static void runFloatTests() {
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for (int index = 0; index < TEST_COUNT; index ++) {
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float a = random.nextFloat();
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float b = random.nextFloat();
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float expected = (-a) * (-b);
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float res = testFloat(a, b);
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Asserts.assertEQ(res, expected);
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}
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}
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private static void runDoubleTests() {
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for (int index = 0; index < TEST_COUNT; index ++) {
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double a = random.nextDouble();
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double b = random.nextDouble();
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double expected = (-a) * (-b);
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double res = testDouble(a, b);
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Asserts.assertEQ(res, expected);
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}
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}
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public static void main(String[] args) {
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runIntTests();
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runLongTests();
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runFloatTests();
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runDoubleTests();
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}
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}
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