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39 gTestfile = '15.8.2.9.js';
42 File Name: 15.8.2.9.js
43 ECMA Section: 15.8.2.9 Math.floor(x)
44 Description: return the greatest number value that is not greater
45 than the argument and is equal to a mathematical integer.
46 if the number is already an integer, return the number
47 itself. special cases:
48 - if x is NaN return NaN
51 - if x = Infinity return Infinity
52 - if x = -Infinity return -Infinity
53 - if ( -1 < x < 0 ) return -0
55 - the value of Math.floor(x) == -Math.ceil(-x)
56 Author: christine@netscape.com
60 var SECTION = "15.8.2.9";
61 var VERSION = "ECMA_1";
63 var TITLE = "Math.floor(x)";
65 writeHeaderToLog( SECTION + " "+ TITLE);
67 new TestCase( SECTION,
72 new TestCase( SECTION,
77 new TestCase( SECTION,
82 new TestCase( SECTION,
87 new TestCase( SECTION,
92 new TestCase( SECTION,
97 new TestCase( SECTION,
102 new TestCase( SECTION,
103 "Math.floor('-1.1')",
105 Math.floor("-1.1") );
107 new TestCase( SECTION,
112 new TestCase( SECTION,
113 "Math.floor('-0.1')",
115 Math.floor("-0.1") );
117 new TestCase( SECTION,
120 Math.floor(Number.NaN) );
122 new TestCase( SECTION,
123 "Math.floor(NaN)==-Math.ceil(-NaN)",
125 Math.floor(Number.NaN) == -Math.ceil(-Number.NaN) );
127 new TestCase( SECTION,
132 new TestCase( SECTION,
133 "Math.floor(0)==-Math.ceil(-0)",
135 Math.floor(0) == -Math.ceil(-0) );
137 new TestCase( SECTION,
142 new TestCase( SECTION,
143 "Infinity/Math.floor(-0)",
145 Infinity/Math.floor(-0) );
147 new TestCase( SECTION,
148 "Math.floor(-0)==-Math.ceil(0)",
150 Math.floor(-0)== -Math.ceil(0) );
152 new TestCase( SECTION,
153 "Math.floor(Infinity)",
154 Number.POSITIVE_INFINITY,
155 Math.floor(Number.POSITIVE_INFINITY) );
157 new TestCase( SECTION,
158 "Math.floor(Infinity)==-Math.ceil(-Infinity)",
160 Math.floor(Number.POSITIVE_INFINITY) == -Math.ceil(Number.NEGATIVE_INFINITY) );
162 new TestCase( SECTION,
163 "Math.floor(-Infinity)",
164 Number.NEGATIVE_INFINITY,
165 Math.floor(Number.NEGATIVE_INFINITY) );
167 new TestCase( SECTION,
168 "Math.floor(-Infinity)==-Math.ceil(Infinity)",
170 Math.floor(Number.NEGATIVE_INFINITY) == -Math.ceil(Number.POSITIVE_INFINITY) );
172 new TestCase( SECTION,
173 "Math.floor(0.0000001)",
175 Math.floor(0.0000001) );
177 new TestCase( SECTION,
178 "Math.floor(0.0000001)==-Math.ceil(0.0000001)", true,
179 Math.floor(0.0000001)==-Math.ceil(-0.0000001) );
181 new TestCase( SECTION,
182 "Math.floor(-0.0000001)",
184 Math.floor(-0.0000001) );
186 new TestCase( SECTION,
187 "Math.floor(0.0000001)==-Math.ceil(0.0000001)",
189 Math.floor(-0.0000001)==-Math.ceil(0.0000001) );