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1/* The contents of this file are subject to the Netscape Public
2 * License Version 1.1 (the "License"); you may not use this file
3 * except in compliance with the License. You may obtain a copy of
4 * the License at http://www.mozilla.org/NPL/
5 *
6 * Software distributed under the License is distributed on an "AS
7 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
8 * implied. See the License for the specific language governing
9 * rights and limitations under the License.
10 *
11 * The Original Code is Mozilla Communicator client code, released March
12 * 31, 1998.
13 *
14 * The Initial Developer of the Original Code is Netscape Communications
15 * Corporation. Portions created by Netscape are
16 * Copyright (C) 1998 Netscape Communications Corporation. All
17 * Rights Reserved.
18 *
19 * Contributor(s):
20 *
21 */
22/**
23 File Name: 15.8.2.10.js
24 ECMA Section: 15.8.2.10 Math.log(x)
25 Description: return an approximiation to the natural logarithm of
26 the argument.
27 special cases:
28 - if arg is NaN result is NaN
29 - if arg is <0 result is NaN
30 - if arg is 0 or -0 result is -Infinity
31 - if arg is 1 result is 0
32 - if arg is Infinity result is Infinity
33 Author: christine@netscape.com
34 Date: 7 july 1997
35*/
36
37 var SECTION = "15.8.2.10";
38 var VERSION = "ECMA_1";
39 startTest();
40 var TITLE = "Math.log(x)";
41 var BUGNUMBER = "77391";
42
43 writeHeaderToLog( SECTION + " "+ TITLE);
44
45 var testcases = getTestCases();
46 test();
47
48function getTestCases() {
49 var array = new Array();
50 var item = 0;
51
52 array[item++] = new TestCase( SECTION, "Math.log.length", 1, Math.log.length );
53
54 array[item++] = new TestCase( SECTION, "Math.log()", Number.NaN, Math.log() );
55 array[item++] = new TestCase( SECTION, "Math.log(void 0)", Number.NaN, Math.log(void 0) );
56 array[item++] = new TestCase( SECTION, "Math.log(null)", Number.NEGATIVE_INFINITY, Math.log(null) );
57 array[item++] = new TestCase( SECTION, "Math.log(true)", 0, Math.log(true) );
58 array[item++] = new TestCase( SECTION, "Math.log(false)", -Infinity, Math.log(false) );
59 array[item++] = new TestCase( SECTION, "Math.log('0')", -Infinity, Math.log('0') );
60 array[item++] = new TestCase( SECTION, "Math.log('1')", 0, Math.log('1') );
61 array[item++] = new TestCase( SECTION, "Math.log('Infinity')", Infinity, Math.log("Infinity") );
62
63 array[item++] = new TestCase( SECTION, "Math.log(NaN)", Number.NaN, Math.log(Number.NaN) );
64 array[item++] = new TestCase( SECTION, "Math.log(-0.0000001)", Number.NaN, Math.log(-0.000001) );
65 array[item++] = new TestCase( SECTION, "Math.log(-1)", Number.NaN, Math.log(-1) );
66 array[item++] = new TestCase( SECTION, "Math.log(0)", Number.NEGATIVE_INFINITY, Math.log(0) );
67 array[item++] = new TestCase( SECTION, "Math.log(-0)", Number.NEGATIVE_INFINITY, Math.log(-0));
68 array[item++] = new TestCase( SECTION, "Math.log(1)", 0, Math.log(1) );
69 array[item++] = new TestCase( SECTION, "Math.log(Infinity)", Number.POSITIVE_INFINITY, Math.log(Number.POSITIVE_INFINITY) );
70 array[item++] = new TestCase( SECTION, "Math.log(-Infinity)", Number.NaN, Math.log(Number.NEGATIVE_INFINITY) );
71
72 return ( array );
73}
74function test() {
75 for ( tc=0; tc < testcases.length; tc++ ) {
76 testcases[tc].passed = writeTestCaseResult(
77 testcases[tc].expect,
78 testcases[tc].actual,
79 testcases[tc].description +" = "+
80 testcases[tc].actual );
81
82 testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
83 }
84 stopTest();
85 return ( testcases );
86}