зеркало из https://github.com/mozilla/pjs.git
83 строки
4.0 KiB
JavaScript
83 строки
4.0 KiB
JavaScript
/* 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: 15.8.2.10.js
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ECMA Section: 15.8.2.10 Math.log(x)
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Description: return an approximiation to the natural logarithm of
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the argument.
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special cases:
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- if arg is NaN result is NaN
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- if arg is <0 result is NaN
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- if arg is 0 or -0 result is -Infinity
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- if arg is 1 result is 0
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- if arg is Infinity result is Infinity
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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 = "15.8.2.10";
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var VERSION = "ECMA_1";
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startTest();
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var TITLE = "Math.log(x)";
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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.log.length", 1, Math.log.length );
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array[item++] = new TestCase( SECTION, "Math.log()", Number.NaN, Math.log() );
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array[item++] = new TestCase( SECTION, "Math.log(void 0)", Number.NaN, Math.log(void 0) );
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array[item++] = new TestCase( SECTION, "Math.log(null)", Number.NEGATIVE_INFINITY, Math.log(null) );
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array[item++] = new TestCase( SECTION, "Math.log(true)", 0, Math.log(true) );
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array[item++] = new TestCase( SECTION, "Math.log(false)", -Infinity, Math.log(false) );
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array[item++] = new TestCase( SECTION, "Math.log('0')", -Infinity, Math.log('0') );
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array[item++] = new TestCase( SECTION, "Math.log('1')", 0, Math.log('1') );
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array[item++] = new TestCase( SECTION, "Math.log('Infinity')", Infinity, Math.log("Infinity") );
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array[item++] = new TestCase( SECTION, "Math.log(NaN)", Number.NaN, Math.log(Number.NaN) );
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array[item++] = new TestCase( SECTION, "Math.log(-0.0000001)", Number.NaN, Math.log(-0.000001) );
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array[item++] = new TestCase( SECTION, "Math.log(-1)", Number.NaN, Math.log(-1) );
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array[item++] = new TestCase( SECTION, "Math.log(0)", Number.NEGATIVE_INFINITY, Math.log(0) );
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array[item++] = new TestCase( SECTION, "Math.log(-0)", Number.NEGATIVE_INFINITY, Math.log(-0));
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array[item++] = new TestCase( SECTION, "Math.log(1)", 0, Math.log(1) );
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array[item++] = new TestCase( SECTION, "Math.log(Infinity)", Number.POSITIVE_INFINITY, Math.log(Number.POSITIVE_INFINITY) );
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array[item++] = new TestCase( SECTION, "Math.log(-Infinity)", Number.NaN, Math.log(Number.NEGATIVE_INFINITY) );
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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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} |