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/* -*- tab-width: 2; indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/**
File Name: 15.8.2.9.js
ECMA Section: 15.8.2.9 Math.floor(x)
Description: return the greatest number value that is not greater
than the argument and is equal to a mathematical integer.
if the number is already an integer, return the number
itself. special cases:
- if x is NaN return NaN
- if x = +0 return +0
- if x = -0 return -0
- if x = Infinity return Infinity
- if x = -Infinity return -Infinity
- if ( -1 < x < 0 ) return -0
also:
- the value of Math.floor(x) == -Math.ceil(-x)
Author: christine@netscape.com
Date: 7 july 1997
*/
var SECTION = "15.8.2.9";
var VERSION = "ECMA_1";
startTest();
var TITLE = "Math.floor(x)";
writeHeaderToLog( SECTION + " "+ TITLE);
new TestCase( SECTION,
"Math.floor.length",
1,
Math.floor.length );
new TestCase( SECTION,
"Math.floor()",
Number.NaN,
Math.floor() );
new TestCase( SECTION,
"Math.floor(void 0)",
Number.NaN,
Math.floor(void 0) );
new TestCase( SECTION,
"Math.floor(null)",
0,
Math.floor(null) );
new TestCase( SECTION,
"Math.floor(true)",
1,
Math.floor(true) );
new TestCase( SECTION,
"Math.floor(false)",
0,
Math.floor(false) );
new TestCase( SECTION,
"Math.floor('1.1')",
1,
Math.floor("1.1") );
new TestCase( SECTION,
"Math.floor('-1.1')",
-2,
Math.floor("-1.1") );
new TestCase( SECTION,
"Math.floor('0.1')",
0,
Math.floor("0.1") );
new TestCase( SECTION,
"Math.floor('-0.1')",
-1,
Math.floor("-0.1") );
new TestCase( SECTION,
"Math.floor(NaN)",
Number.NaN,
Math.floor(Number.NaN) );
new TestCase( SECTION,
"Math.floor(NaN)==-Math.ceil(-NaN)",
false,
Math.floor(Number.NaN) == -Math.ceil(-Number.NaN) );
new TestCase( SECTION,
"Math.floor(0)",
0,
Math.floor(0) );
new TestCase( SECTION,
"Math.floor(0)==-Math.ceil(-0)",
true,
Math.floor(0) == -Math.ceil(-0) );
new TestCase( SECTION,
"Math.floor(-0)",
-0,
Math.floor(-0) );
new TestCase( SECTION,
"Infinity/Math.floor(-0)",
-Infinity,
Infinity/Math.floor(-0) );
new TestCase( SECTION,
"Math.floor(-0)==-Math.ceil(0)",
true,
Math.floor(-0)== -Math.ceil(0) );
new TestCase( SECTION,
"Math.floor(Infinity)",
Number.POSITIVE_INFINITY,
Math.floor(Number.POSITIVE_INFINITY) );
new TestCase( SECTION,
"Math.floor(Infinity)==-Math.ceil(-Infinity)",
true,
Math.floor(Number.POSITIVE_INFINITY) == -Math.ceil(Number.NEGATIVE_INFINITY) );
new TestCase( SECTION,
"Math.floor(-Infinity)",
Number.NEGATIVE_INFINITY,
Math.floor(Number.NEGATIVE_INFINITY) );
new TestCase( SECTION,
"Math.floor(-Infinity)==-Math.ceil(Infinity)",
true,
Math.floor(Number.NEGATIVE_INFINITY) == -Math.ceil(Number.POSITIVE_INFINITY) );
new TestCase( SECTION,
"Math.floor(0.0000001)",
0,
Math.floor(0.0000001) );
new TestCase( SECTION,
"Math.floor(0.0000001)==-Math.ceil(0.0000001)", true,
Math.floor(0.0000001)==-Math.ceil(-0.0000001) );
new TestCase( SECTION,
"Math.floor(-0.0000001)",
-1,
Math.floor(-0.0000001) );
new TestCase( SECTION,
"Math.floor(0.0000001)==-Math.ceil(0.0000001)",
true,
Math.floor(-0.0000001)==-Math.ceil(0.0000001) );
test();
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