| /* -*- 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(); |