Method smear

output/java_guava/1.4.19/SmallCharMatcher.java:55–57

(int hashCode)

   */

  static int smear(int hashCode) {
    return C2 * Integer.rotateLeft(hashCode * C1, 15);
         }

  private boolean checkFilter(int c) {
    return 1 == (1 & (filter >> c));