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authorThe Android Open Source Project <initial-contribution@android.com>2009-03-03 19:30:52 -0800
committerThe Android Open Source Project <initial-contribution@android.com>2009-03-03 19:30:52 -0800
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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: 11.4.8.js
+ ECMA Section: 11.4.8 Bitwise NOT Operator
+ Description: flip bits up to 32 bits
+ no special cases
+ Author: christine@netscape.com
+ Date: 7 july 1997
+
+ Data File Fields:
+ VALUE value passed as an argument to the ~ operator
+ E_RESULT expected return value of ~ VALUE;
+
+ Static variables:
+ none
+
+*/
+
+ var SECTION = "11.4.8";
+ var VERSION = "ECMA_1";
+ startTest();
+ var testcases = getTestCases();
+
+ writeHeaderToLog( SECTION + " Bitwise Not operator");
+ 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 getTestCases() {
+ var array = new Array();
+ var item = 0;
+
+ for ( var i = 0; i < 35; i++ ) {
+ var p = Math.pow(2,i);
+
+ array[item++] = new TestCase( SECTION, "~"+p, Not(p), ~p );
+
+ }
+ for ( i = 0; i < 35; i++ ) {
+ var p = -Math.pow(2,i);
+
+ array[item++] = new TestCase( SECTION, "~"+p, Not(p), ~p );
+
+ }
+
+ return ( array );
+}
+function ToInteger( n ) {
+ n = Number( n );
+ var sign = ( n < 0 ) ? -1 : 1;
+
+ if ( n != n ) {
+ return 0;
+ }
+ if ( Math.abs( n ) == 0 || Math.abs( n ) == Number.POSITIVE_INFINITY ) {
+ return n;
+ }
+ return ( sign * Math.floor(Math.abs(n)) );
+}
+function ToInt32( 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) )) % Math.pow(2,32);
+ n = ( n >= Math.pow(2,31) ) ? n - Math.pow(2,32) : n;
+
+ return ( n );
+}
+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 ToUint16( 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) ) ) % Math.pow(2,16);
+
+ if (n <0) {
+ n += Math.pow(2,16);
+ }
+
+ return ( n );
+}
+function Mask( b, n ) {
+ b = ToUint32BitString( b );
+ b = b.substring( b.length - n );
+ b = ToUint32Decimal( b );
+ return ( b );
+}
+function ToUint32BitString( n ) {
+ var b = "";
+ for ( p = 31; p >=0; p-- ) {
+ if ( n >= Math.pow(2,p) ) {
+ b += "1";
+ n -= Math.pow(2,p);
+ } else {
+ b += "0";
+ }
+ }
+ return b;
+}
+function ToInt32BitString( n ) {
+ var b = "";
+ var sign = ( n < 0 ) ? -1 : 1;
+
+ b += ( sign == 1 ) ? "0" : "1";
+
+ for ( p = 30; p >=0; p-- ) {
+ if ( (sign == 1 ) ? sign * n >= Math.pow(2,p) : sign * n > Math.pow(2,p) ) {
+ b += ( sign == 1 ) ? "1" : "0";
+ n -= sign * Math.pow( 2, p );
+ } else {
+ b += ( sign == 1 ) ? "0" : "1";
+ }
+ }
+
+ return b;
+}
+function ToInt32Decimal( bin ) {
+ var r = 0;
+ var sign;
+
+ if ( Number(bin.charAt(0)) == 0 ) {
+ sign = 1;
+ r = 0;
+ } else {
+ sign = -1;
+ r = -(Math.pow(2,31));
+ }
+
+ for ( var j = 0; j < 31; j++ ) {
+ r += Math.pow( 2, j ) * Number(bin.charAt(31-j));
+ }
+
+ return r;
+}
+function ToUint32Decimal( bin ) {
+ var r = 0;
+
+ for ( l = bin.length; l < 32; l++ ) {
+ bin = "0" + bin;
+ }
+
+ for ( j = 0; j < 31; j++ ) {
+ r += Math.pow( 2, j ) * Number(bin.charAt(31-j));
+ }
+
+ return r;
+}
+function Not( n ) {
+ n = ToInt32(n);
+ n = ToInt32BitString(n);
+
+ r = ""
+
+ for( var l = 0; l < n.length; l++ ) {
+ r += ( n.charAt(l) == "0" ) ? "1" : "0";
+ }
+
+ n = ToInt32Decimal(r);
+
+ return n;
+} \ No newline at end of file