blob: 7eeed9594fce777e9cc3c9637e3fefa3b73f9468 [file] [log] [blame]
// Copyright (c) 2023, the R8 project authors. Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.
package backport;
public class MathBackportJava17Main {
public static void main(String[] args) {
// The methods are actually from Java 15, but we can test them from Java 17.
testAbsExactInteger();
testAbsExactLong();
}
private static void testAbsExactInteger() {
assertEquals(42, Math.absExact(42));
assertEquals(42, Math.absExact(-42));
assertEquals(Integer.MAX_VALUE, Math.absExact(Integer.MAX_VALUE));
try {
throw new AssertionError(Math.absExact(Integer.MIN_VALUE));
} catch (ArithmeticException expected) {
}
}
private static void testAbsExactLong() {
assertEquals(42L, Math.absExact(42L));
assertEquals(42L, Math.absExact(-42L));
assertEquals(Long.MAX_VALUE, Math.absExact(Long.MAX_VALUE));
try {
throw new AssertionError(Math.absExact(Long.MIN_VALUE));
} catch (ArithmeticException expected) {
}
}
private static void assertEquals(int expected, int actual) {
if (expected != actual) {
throw new AssertionError("Expected <" + expected + "> but was <" + actual + '>');
}
}
private static void assertEquals(long expected, long actual) {
if (expected != actual) {
throw new AssertionError("Expected <" + expected + "> but was <" + actual + '>');
}
}
}