| /* -*- 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: 15.8.2.4.js |
| ECMA Section: 15.8.2.4 atan( x ) |
| Description: return an approximation to the arc tangent of the |
| argument. the result is expressed in radians and |
| range is from -PI/2 to +PI/2. special cases: |
| - if x is NaN, the result is NaN |
| - if x == +0, the result is +0 |
| - if x == -0, the result is -0 |
| - if x == +Infinity, the result is approximately +PI/2 |
| - if x == -Infinity, the result is approximately -PI/2 |
| Author: christine@netscape.com |
| Date: 7 july 1997 |
| |
| */ |
| |
| var SECTION = "15.8.2.4"; |
| var VERSION = "ECMA_1"; |
| var TITLE = "Math.atan()"; |
| var BUGNUMBER="77391"; |
| |
| startTest(); |
| |
| writeHeaderToLog( SECTION + " "+ TITLE); |
| |
| new TestCase( SECTION, |
| "Math.atan.length", |
| 1, |
| Math.atan.length ); |
| |
| new TestCase( SECTION, |
| "Math.atan()", |
| Number.NaN, |
| Math.atan() ); |
| |
| new TestCase( SECTION, |
| "Math.atan(void 0)", |
| Number.NaN, |
| Math.atan(void 0) ); |
| |
| new TestCase( SECTION, |
| "Math.atan(null)", |
| 0, |
| Math.atan(null) ); |
| |
| new TestCase( SECTION, |
| "Math.atan(NaN)", |
| Number.NaN, |
| Math.atan(Number.NaN) ); |
| |
| new TestCase( SECTION, |
| "Math.atan('a string')", |
| Number.NaN, |
| Math.atan("a string") ); |
| |
| new TestCase( SECTION, |
| "Math.atan('0')", |
| 0, |
| Math.atan('0') ); |
| |
| new TestCase( SECTION, |
| "Math.atan('1')", |
| Math.PI/4, |
| Math.atan('1') ); |
| |
| new TestCase( SECTION, |
| "Math.atan('-1')", |
| -Math.PI/4, |
| Math.atan('-1') ); |
| |
| new TestCase( SECTION, |
| "Math.atan('Infinity)", |
| Math.PI/2, |
| Math.atan('Infinity') ); |
| |
| new TestCase( SECTION, |
| "Math.atan('-Infinity)", |
| -Math.PI/2, |
| Math.atan('-Infinity') ); |
| |
| new TestCase( SECTION, |
| "Math.atan(0)", |
| 0, |
| Math.atan(0) ); |
| |
| new TestCase( SECTION, |
| "Math.atan(-0)", |
| -0, |
| Math.atan(-0) ); |
| |
| new TestCase( SECTION, |
| "Infinity/Math.atan(-0)", |
| -Infinity, |
| Infinity/Math.atan(-0) ); |
| |
| new TestCase( SECTION, |
| "Math.atan(Infinity)", |
| Math.PI/2, |
| Math.atan(Number.POSITIVE_INFINITY) ); |
| |
| new TestCase( SECTION, |
| "Math.atan(-Infinity)", |
| -Math.PI/2, |
| Math.atan(Number.NEGATIVE_INFINITY) ); |
| |
| new TestCase( SECTION, |
| "Math.atan(1)", |
| Math.PI/4, |
| Math.atan(1) ); |
| |
| new TestCase( SECTION, |
| "Math.atan(-1)", |
| -Math.PI/4, |
| Math.atan(-1) ); |
| |
| test(); |