public class Test {

  private int bb(int u, int v, int w) {
	return (u & v) | (~u & w);
  }

  private int aa(int x, int n) {
	return (x << n) | (x >>> (32 - n));
  }

  protected void processBlock() {
	int a = 0;
	int b = 1;
	int c = 2;
	int d = 3;
    
	a = aa((a + bb( b, c, d)), 0) + b;
  }    
}