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.

test/jdk/java/lang/Math/InverseTrigTests.java

@@ -0,0 +1,187 @@
+/*
+ * Copyright (c) 2003, 2023, 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 8302026
+ * @build Tests
+ * @build InverseTrigTests
+ * @run main InverseTrigTests
+ * @summary Tests for {Math, StrictMath}.{asin, acos, atan}
+ */
+
+import static java.lang.Double.longBitsToDouble;
+
+public class InverseTrigTests {
+    private InverseTrigTests(){}
+
+    public static void main(String... args) {
+        int failures = 0;
+
+        failures += testAsinSpecialCases();
+        failures += testAcosSpecialCases();
+        failures += testAtanSpecialCases();
+
+        if (failures > 0) {
+            System.err.println("Testing inverse trig mthods incurred "
+                               + failures + " failures.");
+            throw new RuntimeException();
+        }
+    }
+
+    private static final double InfinityD = Double.POSITIVE_INFINITY;
+    private static final double NaNd = Double.NaN;
+
+    /**
+     * From the spec for Math.asin:
+     *
+     * "Special cases:
+     *
+     * If the argument is NaN or its absolute value is greater than 1,
+     * then the result is NaN.
+     *
+     * If the argument is zero, then the result is a zero with the
+     * same sign as the argument."
+     */
+    private static int testAsinSpecialCases() {
+        int failures = 0;
+
+        for(double nan : Tests.NaNs) {
+            failures += testAsinCase(nan, NaNd);
+        }
+
+        double [][] testCases = {
+            {Math.nextUp(1.0),    NaNd},
+            {Math.nextDown(-1.0), NaNd},
+            { InfinityD,          NaNd},
+            {-InfinityD,          NaNd},
+
+            {-0.0,                -0.0},
+            {+0.0,                +0.0},
+        };
+
+        for(int i = 0; i < testCases.length; i++) {
+            failures += testAsinCase(testCases[i][0],
+                                     testCases[i][1]);
+        }
+
+        return failures;
+    }
+
+    private static int testAsinCase(double input, double expected) {
+        int failures=0;
+
+        failures += Tests.test("Math.asin",       input, Math::asin,       expected);
+        failures += Tests.test("StrictMath.asin", input, StrictMath::asin, expected);
+
+        return failures;
+    }
+
+    /**
+     * From the spec for Math.acos:
+     *
+     * "Special case:
+     *
+     * If the argument is NaN or its absolute value is greater than 1,
+     * then the result is NaN.
+     *
+     * If the argument is 1.0, the result is positive zero."
+     */
+    private static int testAcosSpecialCases() {
+        int failures = 0;
+
+        for(double nan : Tests.NaNs) {
+            failures += testAcosCase(nan, NaNd);
+        }
+
+        double [][] testCases = {
+            {Math.nextUp(1.0),    NaNd},
+            {Math.nextDown(-1.0), NaNd},
+            {InfinityD,           NaNd},
+            {-InfinityD,          NaNd},
+
+            {1.0,                 +0.0},
+        };
+
+        for(int i = 0; i < testCases.length; i++) {
+            failures += testAcosCase(testCases[i][0],
+                                     testCases[i][1]);
+        }
+
+        return failures;
+    }
+
+    private static int testAcosCase(double input, double expected) {
+        int failures=0;
+
+        failures += Tests.test("Math.acos",       input, Math::acos,       expected);
+        failures += Tests.test("StrictMath.acos", input, StrictMath::acos, expected);
+
+        return failures;
+    }
+
+    /**
+     * From the spec for Math.atan:
+     *
+     * "Special cases:
+     *
+     * If the argument is NaN, then the result is NaN.
+     *
+     * If the argument is zero, then the result is a zero with the
+     * same sign as the argument.
+     *
+     * If the argument is infinite, then the result is the closest
+     * value to pi/2 with the same sign as the input."
+     */
+    private static int testAtanSpecialCases() {
+        int failures = 0;
+
+        for(double nan : Tests.NaNs) {
+            failures += testAtanCase(nan, NaNd);
+        }
+
+        double [][] testCases = {
+            {-0.0,       -0.0},
+            {+0.0,       +0.0},
+
+            { InfinityD, +Math.PI/2.0},
+            {-InfinityD, -Math.PI/2.0},
+        };
+
+        for(int i = 0; i < testCases.length; i++) {
+            failures += testAtanCase(testCases[i][0],
+                                     testCases[i][1]);
+        }
+
+        return failures;
+    }
+
+    private static int testAtanCase(double input, double expected) {
+        int failures=0;
+
+        failures += Tests.test("Math.atan",       input, Math::atan,       expected);
+        failures += Tests.test("StrictMath.atan", input, StrictMath::atan, expected);
+
+        return failures;
+    }
+}