Java Bit Shift shift(int a, int b)

Description

shift

License

Open Source License

Declaration

public static int shift(int a, int b) 

Method Source Code

//package com.java2s;
//License from project: Open Source License 

public class Main {
    public static int shift(int a, int b) {
        if ((0 < b) && (b < 32)) {
            return a << b;
        } else if ((-32 < b) && (b < 0)) {
            return a >> (-b);
        } else if (b == 0) {
            return a;
        } else if (b >= 32) {
            return 0;
        } else {/*from www . j av  a2  s . c o  m*/
            if (a > 0) {
                return 0;
            } else {
                return -1;
            }
        }
    }

    public static long shift(long a, int b) {
        if ((0 < b) && (b < 64)) {
            return a << b;
        } else if ((-64 < b) && (b < 0)) {
            return a >> (-b);
        } else if (b == 0) {
            return a;
        } else if (b >= 64) {
            return 0L;
        } else {
            if (a > 0) {
                return 0L;
            } else {
                return -1L;
            }
        }
    }
}

Related

1. shift(int component, int shift)
2. shift(int direction, long sq, int delta)
3. shift(int length)
4. shift(String string)