undefect. CWE-407 — 63 sites patched across 27 ecosystems
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
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392
test/jdk/java/lang/Math/FusedMultiplyAddTests.java
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392
test/jdk/java/lang/Math/FusedMultiplyAddTests.java
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/*
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* Copyright (c) 2016, 2025, 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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* @bug 4851642 8253409 8362207
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* @summary Tests for Math.fusedMac and StrictMath.fusedMac.
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* @build Tests
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* @build FusedMultiplyAddTests
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* @run main FusedMultiplyAddTests
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* @run main/othervm -XX:-UseFMA FusedMultiplyAddTests
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*/
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/**
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* The specifications for both Math.fusedMac and StrictMath.fusedMac
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* are the same and both are exactly specified. Therefore, both
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* methods are tested in this file.
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*/
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public class FusedMultiplyAddTests {
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private FusedMultiplyAddTests(){}
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private static final double Infinity = Double.POSITIVE_INFINITY;
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private static final float InfinityF = Float.POSITIVE_INFINITY;
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private static final double NaN = Double.NaN;
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private static final float NaNf = Float.NaN;
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public static void main(String... args) {
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int failures = 0;
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failures += testNonFiniteD();
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failures += testZeroesD();
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failures += testSimpleD();
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failures += testNonFiniteF();
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failures += testZeroesF();
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failures += testSimpleF();
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if (failures > 0) {
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System.err.println("Testing fma incurred "
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+ failures + " failures.");
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throw new RuntimeException();
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}
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}
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private static int testNonFiniteD() {
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int failures = 0;
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double [][] testCases = {
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{Infinity, Infinity, Infinity,
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Infinity,
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},
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{-Infinity, Infinity, -Infinity,
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-Infinity,
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},
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{-Infinity, Infinity, Infinity,
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NaN,
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},
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{Infinity, Infinity, -Infinity,
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NaN,
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},
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{1.0, Infinity, 2.0,
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Infinity,
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},
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{1.0, 2.0, Infinity,
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Infinity,
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},
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{Infinity, 1.0, Infinity,
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Infinity,
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},
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{Double.MAX_VALUE, 2.0, -Infinity,
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-Infinity},
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{Infinity, 1.0, -Infinity,
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NaN,
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},
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{-Infinity, 1.0, Infinity,
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NaN,
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},
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{1.0, NaN, 2.0,
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NaN,
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},
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{1.0, 2.0, NaN,
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NaN,
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},
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{Infinity, 2.0, NaN,
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NaN,
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},
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{NaN, 2.0, Infinity,
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NaN,
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},
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};
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for (double[] testCase: testCases)
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failures += testFusedMacCase(testCase[0], testCase[1], testCase[2], testCase[3]);
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return failures;
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}
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private static int testZeroesD() {
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int failures = 0;
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double [][] testCases = {
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{+0.0, +0.0, +0.0,
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+0.0,
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},
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{-0.0, +0.0, +0.0,
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+0.0,
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},
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{+0.0, +0.0, -0.0,
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+0.0,
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},
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{+0.0, +0.0, -0.0,
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+0.0,
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},
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{-0.0, +0.0, -0.0,
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-0.0,
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},
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{-0.0, -0.0, -0.0,
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+0.0,
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},
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{-1.0, +0.0, -0.0,
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-0.0,
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},
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{-1.0, +0.0, +0.0,
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+0.0,
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},
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{-2.0, +0.0, -0.0,
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-0.0,
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},
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{-2.0, +0.0, +0.0,
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+0.0,
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},
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};
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for (double[] testCase: testCases)
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failures += testFusedMacCase(testCase[0], testCase[1], testCase[2], testCase[3]);
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return failures;
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}
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private static int testSimpleD() {
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int failures = 0;
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double [][] testCases = {
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{1.0, 2.0, 3.0,
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5.0,},
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{1.0, 2.0, -2.0,
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0.0,},
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{5.0, 5.0, -25.0,
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0.0,},
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{Double.MAX_VALUE, 2.0, -Double.MAX_VALUE,
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Double.MAX_VALUE},
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{Double.MAX_VALUE, 2.0, 1.0,
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Infinity},
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{Double.MIN_VALUE, -Double.MIN_VALUE, +0.0,
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-0.0},
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{Double.MIN_VALUE, -Double.MIN_VALUE, -0.0,
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-0.0},
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{Double.MIN_VALUE, Double.MIN_VALUE, +0.0,
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+0.0},
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{Double.MIN_VALUE, Double.MIN_VALUE, -0.0,
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+0.0},
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{Double.MIN_VALUE, +0.0, -0.0,
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+0.0},
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{Double.MIN_VALUE, -0.0, -0.0,
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-0.0},
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{Double.MIN_VALUE, +0.0, +0.0,
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+0.0},
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{Double.MIN_VALUE, -0.0, +0.0,
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+0.0},
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{1.0+Math.ulp(1.0), 1.0+Math.ulp(1.0), -1.0-2.0*Math.ulp(1.0),
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Math.ulp(1.0)*Math.ulp(1.0)},
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};
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for (double[] testCase: testCases)
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failures += testFusedMacCase(testCase[0], testCase[1], testCase[2], testCase[3]);
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return failures;
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}
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private static int testNonFiniteF() {
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int failures = 0;
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float [][] testCases = {
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{1.0f, InfinityF, 2.0f,
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InfinityF,
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},
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{1.0f, 2.0f, InfinityF,
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InfinityF,
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},
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{InfinityF, 1.0f, InfinityF,
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InfinityF,
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},
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{Float.MAX_VALUE, 2.0f, -InfinityF,
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-InfinityF},
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{InfinityF, 1.0f, -InfinityF,
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NaNf,
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},
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{-InfinityF, 1.0f, InfinityF,
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NaNf,
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},
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{1.0f, NaNf, 2.0f,
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NaNf,
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},
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{1.0f, 2.0f, NaNf,
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NaNf,
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},
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{InfinityF, 2.0f, NaNf,
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NaNf,
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},
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{NaNf, 2.0f, InfinityF,
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NaNf,
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},
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};
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for (float[] testCase: testCases)
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failures += testFusedMacCase(testCase[0], testCase[1], testCase[2], testCase[3]);
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return failures;
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}
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private static int testZeroesF() {
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int failures = 0;
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float [][] testCases = {
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{+0.0f, +0.0f, +0.0f,
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+0.0f,
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},
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{-0.0f, +0.0f, +0.0f,
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+0.0f,
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},
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{+0.0f, +0.0f, -0.0f,
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+0.0f,
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},
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{+0.0f, +0.0f, -0.0f,
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+0.0f,
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},
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{-0.0f, +0.0f, -0.0f,
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-0.0f,
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},
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{-0.0f, -0.0f, -0.0f,
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+0.0f,
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},
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{-1.0f, +0.0f, -0.0f,
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-0.0f,
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},
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{-1.0f, +0.0f, +0.0f,
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+0.0f,
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},
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{-2.0f, +0.0f, -0.0f,
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-0.0f,
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},
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};
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for (float[] testCase: testCases)
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failures += testFusedMacCase(testCase[0], testCase[1], testCase[2], testCase[3]);
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return failures;
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}
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private static int testSimpleF() {
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int failures = 0;
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float [][] testCases = {
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{1.0f, 2.0f, 3.0f,
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5.0f,},
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{1.0f, 2.0f, -2.0f,
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0.0f,},
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{5.0f, 5.0f, -25.0f,
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0.0f,},
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{Float.MAX_VALUE, 2.0f, -Float.MAX_VALUE,
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Float.MAX_VALUE},
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{Float.MAX_VALUE, 2.0f, 1.0f,
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InfinityF},
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{1.0f+Math.ulp(1.0f), 1.0f+Math.ulp(1.0f), -1.0f-2.0f*Math.ulp(1.0f),
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Math.ulp(1.0f)*Math.ulp(1.0f)},
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// Double-rounding if done in double precision and/or double fma
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{0x1.fffffep23f, 0x1.000004p28f, 0x1.fep5f, 0x1.000002p52f},
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{0x1.001p0f, 0x1.001p0f, 0x1p-100f, 0x1.002002p0f},
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};
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for (float[] testCase: testCases)
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failures += testFusedMacCase(testCase[0], testCase[1], testCase[2], testCase[3]);
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return failures;
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}
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private static int testFusedMacCase(double input1, double input2, double input3, double expected) {
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int failures = 0;
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failures += Tests.test("Math.fma", input1, input2, input3, Math::fma, expected);
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failures += Tests.test("StrictMath.fma", input1, input2, input3, StrictMath::fma, expected);
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// Permute first two inputs
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failures += Tests.test("Math.fma", input2, input1, input3, Math::fma, expected);
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failures += Tests.test("StrictMath.fma", input2, input1, input3, StrictMath::fma, expected);
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return failures;
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}
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private static int testFusedMacCase(float input1, float input2, float input3, float expected) {
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int failures = 0;
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failures += Tests.test("Math.fma(float)", input1, input2, input3,
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Math.fma(input1, input2, input3), expected);
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failures += Tests.test("StrictMath.fma(float)", input1, input2, input3,
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StrictMath.fma(input1, input2, input3), expected);
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// Permute first two inputs
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failures += Tests.test("Math.fma(float)", input2, input1, input3,
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Math.fma(input2, input1, input3), expected);
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failures += Tests.test("StrictMath.fma(float)", input2, input1, input3,
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StrictMath.fma(input2, input1, input3), expected);
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return failures;
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}
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}
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