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/*
* Copyright (c) 2011, 2022, 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.
*/
/*
* @test
* @bug 8255368 8240632
* @summary Tests corner cases of Math.exp
*/
public class ExpCornerCaseTests {
private ExpCornerCaseTests(){}
public static void main(String... args) {
int failures = 0;
failures += testExpCornerCases();
if (failures > 0) {
System.err.printf("Testing exp corner cases incurred %d failures.%n", failures);
throw new RuntimeException();
}
}
private static int testExpCornerCases() {
int failures = 0;
double [][] testCases = {
{+0x4.0p8, Double.POSITIVE_INFINITY},
{+0x2.71p12, Double.POSITIVE_INFINITY},
// Identified special cases in IEEE 754 exp operation
{+0.0, 1.0},
{-0.0, 1.0},
};
for (double[] testCase : testCases) {
failures += testExp(testCase[0], testCase[1]);
}
return failures;
}
private static int testExp(double input, double expected) {
int failures = 0;
failures += Tests.test("StrictMath.exp", input, StrictMath::exp, expected);
failures += Tests.test("Math.exp", input, Math::exp, expected);
return failures;
}
}
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