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/
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.
11 * The Original Code is Mozilla Communicator client code, released March
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
23 File Name: 15.8.2.9.js
24 ECMA Section: 15.8.2.9 Math.floor(x)
25 Description: return the greatest number value that is not greater
26 than the argument and is equal to a mathematical integer.
27 if the number is already an integer, return the number
28 itself. special cases:
29 - if x is NaN return NaN
32 - if x = Infinity return Infinity
33 - if x = -Infinity return -Infinity
34 - if ( -1 < x < 0 ) return -0
36 - the value of Math.floor(x) == -Math.ceil(-x)
37 Author: christine@netscape.com
41 var SECTION = "15.8.2.9";
42 var VERSION = "ECMA_1";
44 var TITLE = "Math.floor(x)";
46 writeHeaderToLog( SECTION + " "+ TITLE);
48 var testcases = getTestCases();
51 function getTestCases() {
52 var array = new Array();
55 array[item++] = new TestCase( SECTION, "Math.floor.length", 1, Math.floor.length );
57 array[item++] = new TestCase( SECTION, "Math.floor()", Number.NaN, Math.floor() );
58 array[item++] = new TestCase( SECTION, "Math.floor(void 0)", Number.NaN, Math.floor(void 0) );
59 array[item++] = new TestCase( SECTION, "Math.floor(null)", 0, Math.floor(null) );
60 array[item++] = new TestCase( SECTION, "Math.floor(true)", 1, Math.floor(true) );
61 array[item++] = new TestCase( SECTION, "Math.floor(false)", 0, Math.floor(false) );
63 array[item++] = new TestCase( SECTION, "Math.floor('1.1')", 1, Math.floor("1.1") );
64 array[item++] = new TestCase( SECTION, "Math.floor('-1.1')", -2, Math.floor("-1.1") );
65 array[item++] = new TestCase( SECTION, "Math.floor('0.1')", 0, Math.floor("0.1") );
66 array[item++] = new TestCase( SECTION, "Math.floor('-0.1')", -1, Math.floor("-0.1") );
68 array[item++] = new TestCase( SECTION, "Math.floor(NaN)", Number.NaN, Math.floor(Number.NaN) );
69 array[item++] = new TestCase( SECTION, "Math.floor(NaN)==-Math.ceil(-NaN)", false, Math.floor(Number.NaN) == -Math.ceil(-Number.NaN) );
71 array[item++] = new TestCase( SECTION, "Math.floor(0)", 0, Math.floor(0) );
72 array[item++] = new TestCase( SECTION, "Math.floor(0)==-Math.ceil(-0)", true, Math.floor(0) == -Math.ceil(-0) );
74 array[item++] = new TestCase( SECTION, "Math.floor(-0)", -0, Math.floor(-0) );
75 array[item++] = new TestCase( SECTION, "Infinity/Math.floor(-0)", -Infinity, Infinity/Math.floor(-0) );
76 array[item++] = new TestCase( SECTION, "Math.floor(-0)==-Math.ceil(0)", true, Math.floor(-0)== -Math.ceil(0) );
78 array[item++] = new TestCase( SECTION, "Math.floor(Infinity)", Number.POSITIVE_INFINITY, Math.floor(Number.POSITIVE_INFINITY) );
79 array[item++] = new TestCase( SECTION, "Math.floor(Infinity)==-Math.ceil(-Infinity)", true, Math.floor(Number.POSITIVE_INFINITY) == -Math.ceil(Number.NEGATIVE_INFINITY) );
81 array[item++] = new TestCase( SECTION, "Math.floor(-Infinity)", Number.NEGATIVE_INFINITY, Math.floor(Number.NEGATIVE_INFINITY) );
82 array[item++] = new TestCase( SECTION, "Math.floor(-Infinity)==-Math.ceil(Infinity)", true, Math.floor(Number.NEGATIVE_INFINITY) == -Math.ceil(Number.POSITIVE_INFINITY) );
84 array[item++] = new TestCase( SECTION, "Math.floor(0.0000001)", 0, Math.floor(0.0000001) );
85 array[item++] = new TestCase( SECTION, "Math.floor(0.0000001)==-Math.ceil(0.0000001)", true, Math.floor(0.0000001)==-Math.ceil(-0.0000001) );
87 array[item++] = new TestCase( SECTION, "Math.floor(-0.0000001)", -1, Math.floor(-0.0000001) );
88 array[item++] = new TestCase( SECTION, "Math.floor(0.0000001)==-Math.ceil(0.0000001)", true, Math.floor(-0.0000001)==-Math.ceil(0.0000001) );
94 for ( tc=0; tc < testcases.length; tc++ ) {
95 testcases[tc].passed = writeTestCaseResult(
98 testcases[tc].description +" = "+
99 testcases[tc].actual );
101 testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
104 return ( testcases );