91 lines
3.8 KiB
Java
91 lines
3.8 KiB
Java
/*
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* Copyright (c) 2003, 2022, 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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import java.util.function.DoubleBinaryOperator;
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import java.util.function.DoubleUnaryOperator;
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/*
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* Shared static test method for StrictMath tests.
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*/
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public class Tests {
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private Tests(){}
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public static int test(String testName,
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double input,
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DoubleUnaryOperator func,
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double expected) {
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return test(testName, input, func.applyAsDouble(input), expected);
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}
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public static int test(String testName,
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double input,
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double result,
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double expected) {
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if (Double.compare(expected, result ) != 0) {
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System.err.println("Failure for " + testName + ":\n" +
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"\tFor input " + input + "\t(" + Double.toHexString(input) + ")\n" +
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"\texpected " + expected + "\t(" + Double.toHexString(expected) + ")\n" +
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"\tgot " + result + "\t(" + Double.toHexString(result) + ").");
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return 1;
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} else {
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return 0;
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}
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}
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public static int test(String testName,
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double input1,
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double input2,
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DoubleBinaryOperator func,
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double expected) {
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return test(testName, input1, input2, func.applyAsDouble(input1, input2), expected);
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}
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public static int test(String testName, double input1, double input2,
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double result, double expected) {
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if (Double.compare(expected, result ) != 0) {
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System.err.println("Failure for " + testName + ":\n" +
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"\tFor input " + input1 + "\t(" + Double.toHexString(input1) + "), " +
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+ input2 + "\t(" + Double.toHexString(input2) + ")\n" +
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"\texpected " + expected + "\t(" + Double.toHexString(expected) + ")\n" +
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"\tgot " + result + "\t(" + Double.toHexString(result) + ").");
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return 1;
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} else {
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return 0;
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}
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}
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/**
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* Returns a double over the normalized range of floating-point values.
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* @return a double over the normalized range of floating-point values
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*/
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static double createRandomDouble(java.util.Random random) {
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final int EXPONENT_RANGE = Double.MAX_EXPONENT - Double.MIN_EXPONENT + 1;
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int targetExponent = Double.MIN_EXPONENT + random.nextInt(EXPONENT_RANGE + 1);
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double tmp = random.nextDouble(); // Double in the range of [0.0, 1.0)
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int tmpExponent = Math.getExponent(tmp);
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return Math.scalb(tmp, targetExponent - tmpExponent);
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}
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}
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