зеркало из https://github.com/mozilla/pjs.git
85 строки
4.2 KiB
JavaScript
85 строки
4.2 KiB
JavaScript
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/* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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* License for the specific language governing rights and limitations
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* under the License.
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*
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* The Original Code is Mozilla Communicator client code, released March
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* 31, 1998.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are Copyright (C) 1998
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* Netscape Communications Corporation. All Rights Reserved.
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*
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*/
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/**
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File Name: 15.8.2.4.js
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ECMA Section: 15.8.2.4 atan( x )
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Description: return an approximation to the arc tangent of the
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argument. the result is expressed in radians and
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range is from -PI/2 to +PI/2. special cases:
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- if x is NaN, the result is NaN
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- if x == +0, the result is +0
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- if x == -0, the result is -0
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- if x == +Infinity, the result is approximately +PI/2
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- if x == -Infinity, the result is approximately -PI/2
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Author: christine@netscape.com
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Date: 7 july 1997
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*/
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var SECTION = "15.8.2.4";
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var VERSION = "ECMA_1";
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startTest();
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var TITLE = "Math.atan()";
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var BUGNUMBER="77391";
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writeHeaderToLog( SECTION + " "+ TITLE);
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var testcases = getTestCases();
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test();
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function getTestCases() {
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var array = new Array();
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var item = 0;
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array[item++] = new TestCase( SECTION, "Math.atan.length", 1, Math.atan.length );
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array[item++] = new TestCase( SECTION, "Math.atan()", Number.NaN, Math.atan() );
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array[item++] = new TestCase( SECTION, "Math.atan(void 0)", Number.NaN, Math.atan(void 0) );
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array[item++] = new TestCase( SECTION, "Math.atan(null)", 0, Math.atan(null) );
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array[item++] = new TestCase( SECTION, "Math.atan(NaN)", Number.NaN, Math.atan(Number.NaN) );
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array[item++] = new TestCase( SECTION, "Math.atan('a string')", Number.NaN, Math.atan("a string") );
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array[item++] = new TestCase( SECTION, "Math.atan('0')", 0, Math.atan('0') );
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array[item++] = new TestCase( SECTION, "Math.atan('1')", Math.PI/4, Math.atan('1') );
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array[item++] = new TestCase( SECTION, "Math.atan('-1')", -Math.PI/4, Math.atan('-1') );
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array[item++] = new TestCase( SECTION, "Math.atan('Infinity)", Math.PI/2, Math.atan('Infinity') );
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array[item++] = new TestCase( SECTION, "Math.atan('-Infinity)", -Math.PI/2, Math.atan('-Infinity') );
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array[item++] = new TestCase( SECTION, "Math.atan(0)", 0, Math.atan(0) );
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array[item++] = new TestCase( SECTION, "Math.atan(-0)", -0, Math.atan(-0) );
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array[item++] = new TestCase( SECTION, "Infinity/Math.atan(-0)", -Infinity, Infinity/Math.atan(-0) );
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array[item++] = new TestCase( SECTION, "Math.atan(Infinity)", Math.PI/2, Math.atan(Number.POSITIVE_INFINITY) );
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array[item++] = new TestCase( SECTION, "Math.atan(-Infinity)", -Math.PI/2, Math.atan(Number.NEGATIVE_INFINITY) );
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array[item++] = new TestCase( SECTION, "Math.atan(1)", Math.PI/4, Math.atan(1) );
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array[item++] = new TestCase( SECTION, "Math.atan(-1)", -Math.PI/4, Math.atan(-1) );
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return array;
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}
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function test() {
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for ( tc=0; tc < testcases.length; tc++ ) {
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testcases[tc].passed = writeTestCaseResult(
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testcases[tc].expect,
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testcases[tc].actual,
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testcases[tc].description +" = "+
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testcases[tc].actual );
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testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
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}
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stopTest();
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return ( testcases );
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}
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