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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: 15.8.2.4.js | |
24 | ECMA Section: 15.8.2.4 atan( x ) | |
25 | Description: return an approximation to the arc tangent of the | |
26 | argument. the result is expressed in radians and | |
27 | range is from -PI/2 to +PI/2. special cases: | |
28 | - if x is NaN, the result is NaN | |
29 | - if x == +0, the result is +0 | |
30 | - if x == -0, the result is -0 | |
31 | - if x == +Infinity, the result is approximately +PI/2 | |
32 | - if x == -Infinity, the result is approximately -PI/2 | |
33 | Author: christine@netscape.com | |
34 | Date: 7 july 1997 | |
35 | ||
36 | */ | |
37 | ||
38 | var SECTION = "15.8.2.4"; | |
39 | var VERSION = "ECMA_1"; | |
40 | startTest(); | |
41 | var TITLE = "Math.atan()"; | |
42 | var BUGNUMBER="77391"; | |
43 | ||
44 | writeHeaderToLog( SECTION + " "+ TITLE); | |
45 | ||
46 | var testcases = getTestCases(); | |
47 | test(); | |
48 | ||
49 | function getTestCases() { | |
50 | var array = new Array(); | |
51 | var item = 0; | |
52 | ||
53 | array[item++] = new TestCase( SECTION, "Math.atan.length", 1, Math.atan.length ); | |
54 | ||
55 | array[item++] = new TestCase( SECTION, "Math.atan()", Number.NaN, Math.atan() ); | |
56 | array[item++] = new TestCase( SECTION, "Math.atan(void 0)", Number.NaN, Math.atan(void 0) ); | |
57 | array[item++] = new TestCase( SECTION, "Math.atan(null)", 0, Math.atan(null) ); | |
58 | array[item++] = new TestCase( SECTION, "Math.atan(NaN)", Number.NaN, Math.atan(Number.NaN) ); | |
59 | ||
60 | array[item++] = new TestCase( SECTION, "Math.atan('a string')", Number.NaN, Math.atan("a string") ); | |
61 | array[item++] = new TestCase( SECTION, "Math.atan('0')", 0, Math.atan('0') ); | |
62 | array[item++] = new TestCase( SECTION, "Math.atan('1')", Math.PI/4, Math.atan('1') ); | |
63 | array[item++] = new TestCase( SECTION, "Math.atan('-1')", -Math.PI/4, Math.atan('-1') ); | |
64 | array[item++] = new TestCase( SECTION, "Math.atan('Infinity)", Math.PI/2, Math.atan('Infinity') ); | |
65 | array[item++] = new TestCase( SECTION, "Math.atan('-Infinity)", -Math.PI/2, Math.atan('-Infinity') ); | |
66 | ||
67 | array[item++] = new TestCase( SECTION, "Math.atan(0)", 0, Math.atan(0) ); | |
68 | array[item++] = new TestCase( SECTION, "Math.atan(-0)", -0, Math.atan(-0) ); | |
69 | array[item++] = new TestCase( SECTION, "Infinity/Math.atan(-0)", -Infinity, Infinity/Math.atan(-0) ); | |
70 | array[item++] = new TestCase( SECTION, "Math.atan(Infinity)", Math.PI/2, Math.atan(Number.POSITIVE_INFINITY) ); | |
71 | array[item++] = new TestCase( SECTION, "Math.atan(-Infinity)", -Math.PI/2, Math.atan(Number.NEGATIVE_INFINITY) ); | |
72 | array[item++] = new TestCase( SECTION, "Math.atan(1)", Math.PI/4, Math.atan(1) ); | |
73 | array[item++] = new TestCase( SECTION, "Math.atan(-1)", -Math.PI/4, Math.atan(-1) ); | |
74 | return array; | |
75 | } | |
76 | function test() { | |
77 | for ( tc=0; tc < testcases.length; tc++ ) { | |
78 | testcases[tc].passed = writeTestCaseResult( | |
79 | testcases[tc].expect, | |
80 | testcases[tc].actual, | |
81 | testcases[tc].description +" = "+ | |
82 | testcases[tc].actual ); | |
83 | ||
84 | testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value "; | |
85 | } | |
86 | stopTest(); | |
87 | return ( testcases ); | |
88 | } |