source: trunk/yao/share/antlr-2.7.7/lib/csharp/antlr.runtime/SupportClass.cs @ 1

using System;
internal class SupportClass
{
        public static int URShift(int number, int bits)
        {
                if ( number >= 0)
                        return number >> bits;
                else
                        return (number >> bits) + (2 << ~bits);
        }

        public static int URShift(int number, long bits)
        {
                return URShift(number, (int)bits);
        }

        public static long URShift(long number, int bits)
        {
                if ( number >= 0)
                        return number >> bits;
                else
                        return (number >> bits) + (2L << ~bits);
        }

        public static long URShift(long number, long bits)
        {
                return URShift(number, (int)bits);
        }
}