Non-cryptographic hash function(UDF function) for mysql5.1

Some times, we want to use a hash funtion which is non-cryptographic,only create a number value,but mysql can't provide it, so I merge the "One At A Time hashing function" into mysql5.1,it  was originally created by Bob Jenkins.you can get my mysql hash function code from follow url:
http://forge.mysql.com/tools/tool.php?id=334

if you want use it in java and mysql,I modify the c code to java as following:

public static long hash32(String input) {

            try {

                  long hashend = 0L;

                  int hash = 0;

                  int hashbefore = 0;

                  long hashtemp = 0L;

                  for (byte bt : input.getBytes("utf-8")) {

                        hash += (bt & 0xFF);

                        hash += (hash << 10);

                        hash ^= (hash >>> 6);

                  }

                  hash += (hash << 3);

                  hash ^= (hash >>> 11);

                  hashbefore = hash;

                  hash += (hash << 15);

                  // finally result out rang of INT,

                  // so need long to save the data.

                  if (hash < 0) {

                        hashtemp = hashbefore << 15;

                        hashend = hashbefore + hashtemp;

                  } else

                        hashend = hash;

                  return hashend;

            } catch (Exception e) {

                  return 0;

            }

}

 following is java and mysql UDF testing result.

select hash32("A2ff7402d89c1086119bd7f17176ba66EEEEEEEEEEEEEEEEYYYYYYYY8888888888888888888888888888888888888888888888888888888") as hash32

+------------+

| hash32     |

+------------+

| 1143512335 |

+------------+

select hash32("1111111111111111111111111111111111111111") as hash32

+------------+

| hash32     |

+------------+

| 1867344944 |

+------------+

select hash32("aaabbbbbcccc1122228888888888888888888888") as hash32

+------------+

| hash32     |

+------------+

| 2697799865 |

+------------+

java:

hashvalue32=1143512335

hashvalue32=1867344944

hashvalue32=2697799865