1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
/*
* Copyright (c) 2003, 2015, 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.
*/
/*
*
*
* Shared static test method for StrictMath tests.
*/
public class Tests {
private Tests(){}
static int test(String testName,
double input,
double result,
double expected) {
if (Double.compare(expected, result ) != 0) {
System.err.println("Failure for " + testName + ":\n" +
"\tFor input " + input + "\t(" + Double.toHexString(input) + ")\n" +
"\texpected " + expected + "\t(" + Double.toHexString(expected) + ")\n" +
"\tgot " + result + "\t(" + Double.toHexString(result) + ").");
return 1;
}
else
return 0;
}
static int test(String testName, double input1, double input2,
double result, double expected) {
if (Double.compare(expected, result ) != 0) {
System.err.println("Failure for " + testName + ":\n" +
"\tFor input " + input1 + "\t(" + Double.toHexString(input1) + "), " +
+ input2 + "\t(" + Double.toHexString(input2) + ")\n" +
"\texpected " + expected + "\t(" + Double.toHexString(expected) + ")\n" +
"\tgot " + result + "\t(" + Double.toHexString(result) + ").");
return 1;
}
else
return 0;
}
/**
* Returns a double over the normalized range of floating-point values.
* @return a double over the normalized range of floating-point values
*/
static double createRandomDouble(java.util.Random random) {
final int EXPONENT_RANGE = Double.MAX_EXPONENT - Double.MIN_EXPONENT + 1;
int targetExponent = Double.MIN_EXPONENT + random.nextInt(EXPONENT_RANGE + 1);
double tmp = random.nextDouble(); // Double in the range of [0.0, 1.0)
int tmpExponent = Math.getExponent(tmp);
return Math.scalb(tmp, targetExponent - tmpExponent);
}
}
|
