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1 /* |
1 /* |
2 * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved. |
2 * Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * |
4 * |
5 * This code is free software; you can redistribute it and/or modify it |
5 * This code is free software; you can redistribute it and/or modify it |
6 * under the terms of the GNU General Public License version 2 only, as |
6 * under the terms of the GNU General Public License version 2 only, as |
7 * published by the Free Software Foundation. |
7 * published by the Free Software Foundation. |
21 * questions. |
21 * questions. |
22 */ |
22 */ |
23 |
23 |
24 /* |
24 /* |
25 * @test |
25 * @test |
26 * @bug 4851638 4939441 |
26 * @library /lib/testlibrary/ |
27 * @summary Tests for {Math, StrictMath}.log1p |
27 * @build jdk.testlibrary.* |
|
28 * @run main Log1pTests |
|
29 * @bug 4851638 4939441 8078672 |
|
30 * @summary Tests for {Math, StrictMath}.log1p (use -Dseed=X to set PRNG seed) |
28 * @author Joseph D. Darcy |
31 * @author Joseph D. Darcy |
29 * @key randomness |
32 * @key randomness |
30 */ |
33 */ |
31 |
34 |
32 public class Log1pTests { |
35 public class Log1pTests { |
97 failures += testLog1pCaseWithUlpDiff(d, StrictMath.log(d), 2.001); |
100 failures += testLog1pCaseWithUlpDiff(d, StrictMath.log(d), 2.001); |
98 } |
101 } |
99 |
102 |
100 // Construct random values with exponents ranging from -53 to |
103 // Construct random values with exponents ranging from -53 to |
101 // 52 and compare against HP-15C formula. |
104 // 52 and compare against HP-15C formula. |
102 java.util.Random rand = new java.util.Random(); |
105 java.util.Random rand = RandomFactory.getRandom(); |
103 for(int i = 0; i < 1000; i++) { |
106 for(int i = 0; i < 1000; i++) { |
104 double d = rand.nextDouble(); |
107 double d = rand.nextDouble(); |
105 |
108 |
106 d = Math.scalb(d, -53 - Tests.ilogb(d)); |
109 d = Math.scalb(d, -53 - Tests.ilogb(d)); |
107 |
110 |