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Diffstat (limited to 'tests/auto/qml/parserstress/tests/ecma/Expressions/11.7.1.js')
-rw-r--r-- | tests/auto/qml/parserstress/tests/ecma/Expressions/11.7.1.js | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/tests/auto/qml/parserstress/tests/ecma/Expressions/11.7.1.js b/tests/auto/qml/parserstress/tests/ecma/Expressions/11.7.1.js new file mode 100644 index 0000000000..44099f6c94 --- /dev/null +++ b/tests/auto/qml/parserstress/tests/ecma/Expressions/11.7.1.js @@ -0,0 +1,228 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* ***** BEGIN LICENSE BLOCK ***** + * Version: MPL 1.1/GPL 2.0/LGPL 2.1 + * + * The contents of this file are subject to the Mozilla 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/MPL/ + * + * 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 the Initial Developer are Copyright (C) 1998 + * the Initial Developer. All Rights Reserved. + * + * Contributor(s): + * + * Alternatively, the contents of this file may be used under the terms of + * either the GNU General Public License Version 2 or later (the "GPL"), or + * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), + * in which case the provisions of the GPL or the LGPL are applicable instead + * of those above. If you wish to allow use of your version of this file only + * under the terms of either the GPL or the LGPL, and not to allow others to + * use your version of this file under the terms of the MPL, indicate your + * decision by deleting the provisions above and replace them with the notice + * and other provisions required by the GPL or the LGPL. If you do not delete + * the provisions above, a recipient may use your version of this file under + * the terms of any one of the MPL, the GPL or the LGPL. + * + * ***** END LICENSE BLOCK ***** */ + +gTestfile = '11.7.1.js'; + +/** + File Name: 11.7.1.js + ECMA Section: 11.7.1 The Left Shift Operator ( << ) + Description: + Performs a bitwise left shift operation on the left argument by the amount + specified by the right argument. + + The production ShiftExpression : ShiftExpression << AdditiveExpression is + evaluated as follows: + + 1. Evaluate ShiftExpression. + 2. Call GetValue(Result(1)). + 3. Evaluate AdditiveExpression. + 4. Call GetValue(Result(3)). + 5. Call ToInt32(Result(2)). + 6. Call ToUint32(Result(4)). + 7. Mask out all but the least significant 5 bits of Result(6), that is, + compute Result(6) & 0x1F. + 8. Left shift Result(5) by Result(7) bits. The result is a signed 32 bit + integer. + 9. Return Result(8). + + Author: christine@netscape.com + Date: 12 november 1997 +*/ +var SECTION = "11.7.1"; +var VERSION = "ECMA_1"; +startTest(); + +writeHeaderToLog( SECTION + " The left shift operator ( << )"); + +for ( power = 0; power < 33; power++ ) { + shiftexp = Math.pow( 2, power ); + + for ( addexp = 0; addexp < 33; addexp++ ) { + new TestCase( SECTION, + shiftexp + " << " + addexp, + LeftShift( shiftexp, addexp ), + shiftexp << addexp ); + } +} + +test(); + +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 LeftShift( s, a ) { + var shift = ToInt32( s ); + var add = ToUint32( a ); + add = Mask( add, 5 ); + var exp = LShift( shift, add ); + + return ( exp ); +} +function LShift( s, a ) { + s = ToInt32BitString( s ); + + for ( var z = 0; z < a; z++ ) { + s += "0"; + } + + s = s.substring( a, s.length); + + return ToInt32(ToInt32Decimal(s)); +} |