https://github.com/jruby/jruby/jruby-core: JRuby is the effort to recreate the Ruby (https://www.ruby-lang.org) interpreter in Java. (JRuby)
  • headius
  • enebo
  • wmeissner
  • BanzaiMan
  • mkristian 
package org.jruby.util;


Perl's Hash implementation.

Author:nahi@ruby-lang.org
/**
 * Perl's Hash implementation.
 *
 * @author nahi@ruby-lang.org
 */
public class PerlHash {
    public static long hash(long key, byte[] src, int offset, int length) {
	for (int idx = 0; idx < length; ++idx) {
	    key += (src[offset + idx] & 0xFF);
	    key += (key << 10);
	    key ^= (key >>> 6);
	}
	key += (key << 3);
	key ^= (key >>> 11);
	key += (key << 15);
	return key;
    }
}