1 /* The contents of this file are subject to the Netscape Public 2 * License Version 1.1 (the "License"); you may not use this file 3 * except in compliance with the License. You may obtain a copy of 4 * the License at http://www.mozilla.org/NPL/ 5 * 6 * Software distributed under the License is distributed on an "AS 7 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or 8 * implied. See the License for the specific language governing 9 * rights and limitations under the License. 10 * 11 * The Original Code is Mozilla Communicator client code, released March 12 * 31, 1998. 13 * 14 * The Initial Developer of the Original Code is Netscape Communications 15 * Corporation. Portions created by Netscape are 16 * Copyright (C) 1998 Netscape Communications Corporation. All 17 * Rights Reserved. 18 * 19 * Contributor(s): 20 * 21 */ 22 /** 23 File Name: 15.8.2.10.js 24 ECMA Section: 15.8.2.10 Math.log(x) 25 Description: return an approximiation to the natural logarithm of 26 the argument. 27 special cases: 28 - if arg is NaN result is NaN 29 - if arg is <0 result is NaN 30 - if arg is 0 or -0 result is -Infinity 31 - if arg is 1 result is 0 32 - if arg is Infinity result is Infinity 33 Author: christine (at) netscape.com 34 Date: 7 july 1997 35 */ 36 37 var SECTION = "15.8.2.10"; 38 var VERSION = "ECMA_1"; 39 startTest(); 40 var TITLE = "Math.log(x)"; 41 var BUGNUMBER = "77391"; 42 43 writeHeaderToLog( SECTION + " "+ TITLE); 44 45 var testcases = getTestCases(); 46 test(); 47 48 function getTestCases() { 49 var array = new Array(); 50 var item = 0; 51 52 array[item++] = new TestCase( SECTION, "Math.log.length", 1, Math.log.length ); 53 54 array[item++] = new TestCase( SECTION, "Math.log()", Number.NaN, Math.log() ); 55 array[item++] = new TestCase( SECTION, "Math.log(void 0)", Number.NaN, Math.log(void 0) ); 56 array[item++] = new TestCase( SECTION, "Math.log(null)", Number.NEGATIVE_INFINITY, Math.log(null) ); 57 array[item++] = new TestCase( SECTION, "Math.log(true)", 0, Math.log(true) ); 58 array[item++] = new TestCase( SECTION, "Math.log(false)", -Infinity, Math.log(false) ); 59 array[item++] = new TestCase( SECTION, "Math.log('0')", -Infinity, Math.log('0') ); 60 array[item++] = new TestCase( SECTION, "Math.log('1')", 0, Math.log('1') ); 61 array[item++] = new TestCase( SECTION, "Math.log('Infinity')", Infinity, Math.log("Infinity") ); 62 63 array[item++] = new TestCase( SECTION, "Math.log(NaN)", Number.NaN, Math.log(Number.NaN) ); 64 array[item++] = new TestCase( SECTION, "Math.log(-0.0000001)", Number.NaN, Math.log(-0.000001) ); 65 array[item++] = new TestCase( SECTION, "Math.log(-1)", Number.NaN, Math.log(-1) ); 66 array[item++] = new TestCase( SECTION, "Math.log(0)", Number.NEGATIVE_INFINITY, Math.log(0) ); 67 array[item++] = new TestCase( SECTION, "Math.log(-0)", Number.NEGATIVE_INFINITY, Math.log(-0)); 68 array[item++] = new TestCase( SECTION, "Math.log(1)", 0, Math.log(1) ); 69 array[item++] = new TestCase( SECTION, "Math.log(Infinity)", Number.POSITIVE_INFINITY, Math.log(Number.POSITIVE_INFINITY) ); 70 array[item++] = new TestCase( SECTION, "Math.log(-Infinity)", Number.NaN, Math.log(Number.NEGATIVE_INFINITY) ); 71 72 return ( array ); 73 } 74 function test() { 75 for ( tc=0; tc < testcases.length; tc++ ) { 76 testcases[tc].passed = writeTestCaseResult( 77 testcases[tc].expect, 78 testcases[tc].actual, 79 testcases[tc].description +" = "+ 80 testcases[tc].actual ); 81 82 testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value "; 83 } 84 stopTest(); 85 return ( testcases ); 86 }
