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/* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is Mozilla Communicator client code, released March
* 31, 1998.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*
*/
/**
File Name: 9.6.js
ECMA Section: 9.6 Type Conversion: ToUint32
Description: rules for converting an argument to an unsigned
32 bit integer
this test uses >>> 0 to convert the argument to
an unsigned 32bit integer.
1 call ToNumber on argument
2 if result is NaN, 0, -0, Infinity, -Infinity
return 0
3 compute (sign (result(1)) * floor(abs(result 1)))
4 compute result(3) modulo 2^32:
5 return result(4)
special cases:
-0 returns 0
Infinity returns 0
-Infinity returns 0
0 returns 0
ToInt32(ToUint32(x)) == ToInt32(x) for all values of x
** NEED TO DO THIS PART IN A SEPARATE TEST FILE **
Author: christine@netscape.com
Date: 17 july 1997
*/
var SECTION = "9.6";
var VERSION = "ECMA_1";
startTest();
var testcases = getTestCases();
writeHeaderToLog( SECTION + " Type Conversion: ToUint32");
test();
function test() {
for ( tc=0; tc < testcases.length; tc++ ) {
testcases[tc].passed = writeTestCaseResult(
testcases[tc].expect,
testcases[tc].actual,
testcases[tc].description +" = "+
testcases[tc].actual );
testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value ";
}
stopTest();
return ( testcases );
}
function ToUint32( n ) {
n = Number( n );
var sign = ( n < 0 ) ? -1 : 1;
if ( Math.abs( n ) == 0 || Math.abs( n ) == Number.POSITIVE_INFINITY) {
return 0;
}
n = sign * Math.floor( Math.abs(n) )
n = n % Math.pow(2,32);
if ( n < 0 ){
n += Math.pow(2,32);
}
return ( n );
}
function getTestCases() {
var array = new Array();
var item = 0;
array[item++] = new TestCase( SECTION, "0 >>> 0", 0, 0 >>> 0 );
// array[item++] = new TestCase( SECTION, "+0 >>> 0", 0, +0 >>> 0);
array[item++] = new TestCase( SECTION, "-0 >>> 0", 0, -0 >>> 0 );
array[item++] = new TestCase( SECTION, "'Infinity' >>> 0", 0, "Infinity" >>> 0 );
array[item++] = new TestCase( SECTION, "'-Infinity' >>> 0", 0, "-Infinity" >>> 0);
array[item++] = new TestCase( SECTION, "'+Infinity' >>> 0", 0, "+Infinity" >>> 0 );
array[item++] = new TestCase( SECTION, "Number.POSITIVE_INFINITY >>> 0", 0, Number.POSITIVE_INFINITY >>> 0 );
array[item++] = new TestCase( SECTION, "Number.NEGATIVE_INFINITY >>> 0", 0, Number.NEGATIVE_INFINITY >>> 0 );
array[item++] = new TestCase( SECTION, "Number.NaN >>> 0", 0, Number.NaN >>> 0 );
array[item++] = new TestCase( SECTION, "Number.MIN_VALUE >>> 0", 0, Number.MIN_VALUE >>> 0 );
array[item++] = new TestCase( SECTION, "-Number.MIN_VALUE >>> 0", 0, Number.MIN_VALUE >>> 0 );
array[item++] = new TestCase( SECTION, "0.1 >>> 0", 0, 0.1 >>> 0 );
array[item++] = new TestCase( SECTION, "-0.1 >>> 0", 0, -0.1 >>> 0 );
array[item++] = new TestCase( SECTION, "1 >>> 0", 1, 1 >>> 0 );
array[item++] = new TestCase( SECTION, "1.1 >>> 0", 1, 1.1 >>> 0 );
array[item++] = new TestCase( SECTION, "-1.1 >>> 0", ToUint32(-1.1), -1.1 >>> 0 );
array[item++] = new TestCase( SECTION, "-1 >>> 0", ToUint32(-1), -1 >>> 0 );
array[item++] = new TestCase( SECTION, "2147483647 >>> 0", ToUint32(2147483647), 2147483647 >>> 0 );
array[item++] = new TestCase( SECTION, "2147483648 >>> 0", ToUint32(2147483648), 2147483648 >>> 0 );
array[item++] = new TestCase( SECTION, "2147483649 >>> 0", ToUint32(2147483649), 2147483649 >>> 0 );
array[item++] = new TestCase( SECTION, "4294967295 >>> 0", ToUint32(4294967295), 4294967295 >>> 0 );
array[item++] = new TestCase( SECTION, "4294967296 >>> 0", ToUint32(4294967296), 4294967296 >>> 0 );
array[item++] = new TestCase( SECTION, "4294967297 >>> 0", ToUint32(4294967297), 4294967297 >>> 0 );
array[item++] = new TestCase( SECTION, "-2147483647 >>> 0", ToUint32(-2147483647), -2147483647 >>> 0 );
array[item++] = new TestCase( SECTION, "-2147483648 >>> 0", ToUint32(-2147483648), -2147483648 >>> 0 );
array[item++] = new TestCase( SECTION, "-2147483649 >>> 0", ToUint32(-2147483649), -2147483649 >>> 0 );
array[item++] = new TestCase( SECTION, "-4294967295 >>> 0", ToUint32(-4294967295), -4294967295 >>> 0 );
array[item++] = new TestCase( SECTION, "-4294967296 >>> 0", ToUint32(-4294967296), -4294967296 >>> 0 );
array[item++] = new TestCase( SECTION, "-4294967297 >>> 0", ToUint32(-4294967297), -4294967297 >>> 0 );
array[item++] = new TestCase( SECTION, "'2147483647' >>> 0", ToUint32(2147483647), '2147483647' >>> 0 );
array[item++] = new TestCase( SECTION, "'2147483648' >>> 0", ToUint32(2147483648), '2147483648' >>> 0 );
array[item++] = new TestCase( SECTION, "'2147483649' >>> 0", ToUint32(2147483649), '2147483649' >>> 0 );
array[item++] = new TestCase( SECTION, "'4294967295' >>> 0", ToUint32(4294967295), '4294967295' >>> 0 );
array[item++] = new TestCase( SECTION, "'4294967296' >>> 0", ToUint32(4294967296), '4294967296' >>> 0 );
array[item++] = new TestCase( SECTION, "'4294967297' >>> 0", ToUint32(4294967297), '4294967297' >>> 0 );
return ( array );
}
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