Merge pull request #140 from hussainnaqvee/patch-1

[awesomized/libmemcached] / libhashkit / hsieh.cc

diff --git a/libhashkit/hsieh.cc b/libhashkit/hsieh.cc
deleted file mode 100644 (file)
index ca88f8d..0000000
--- a/libhashkit/hsieh.cc
+++ /dev/null
@@ -1,113 +0,0 @@
-/*  vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
- * 
- *  HashKit library
- *
- *  Copyright (C) 2011-2012 Data Differential, http://datadifferential.com/
- *  Copyright (C) 2006-2009 Brian Aker All rights reserved.
- *
- *  Redistribution and use in source and binary forms, with or without
- *  modification, are permitted provided that the following conditions are
- *  met:
- *
- *      * Redistributions of source code must retain the above copyright
- *  notice, this list of conditions and the following disclaimer.
- *
- *      * Redistributions in binary form must reproduce the above
- *  copyright notice, this list of conditions and the following disclaimer
- *  in the documentation and/or other materials provided with the
- *  distribution.
- *
- *      * The names of its contributors may not be used to endorse or
- *  promote products derived from this software without specific prior
- *  written permission.
- *
- *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- *  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- *  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
- *  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
- *  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- *  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- *  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- *  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- */
-
-/* By Paul Hsieh (C) 2004, 2005.  Covered under the Paul Hsieh
- * derivative license.
- * See: http://www.azillionmonkeys.com/qed/weblicense.html for license
- * details.
- * http://www.azillionmonkeys.com/qed/hash.html
-*/
-
-#include <libhashkit/common.h>
-
-#undef get16bits
-#if (defined(__GNUC__) && defined(__i386__))
-#define get16bits(d) (*((const uint16_t *) (d)))
-#endif
-
-#if !defined (get16bits)
-#define get16bits(d) ((((uint32_t)(((const uint8_t *)(d))[1])) << 8)\
-                      +(uint32_t)(((const uint8_t *)(d))[0]) )
-#endif
-
-#ifdef HAVE_HSIEH_HASH
-uint32_t hashkit_hsieh(const char *key, size_t key_length, void *)
-{
-  uint32_t hash = 0, tmp;
-  int rem;
-
-  if (key_length <= 0 || key == NULL)
-    return 0;
-
-  rem = key_length & 3;
-  key_length >>= 2;
-
-  /* Main loop */
-  for (;key_length > 0; key_length--)
-  {
-    hash  += get16bits (key);
-    tmp    = (get16bits (key+2) << 11) ^ hash;
-    hash   = (hash << 16) ^ tmp;
-    key  += 2*sizeof (uint16_t);
-    hash  += hash >> 11;
-  }
-
-  /* Handle end cases */
-  switch (rem)
-  {
-  case 3: hash += get16bits (key);
-          hash ^= hash << 16;
-          hash ^= (uint32_t)key[sizeof (uint16_t)] << 18;
-          hash += hash >> 11;
-          break;
-  case 2: hash += get16bits (key);
-          hash ^= hash << 11;
-          hash += hash >> 17;
-          break;
-  case 1: hash += (unsigned char)(*key);
-          hash ^= hash << 10;
-          hash += hash >> 1;
-  default:
-          break;
-  }
-
-  /* Force "avalanching" of final 127 bits */
-  hash ^= hash << 3;
-  hash += hash >> 5;
-  hash ^= hash << 4;
-  hash += hash >> 17;
-  hash ^= hash << 25;
-  hash += hash >> 6;
-
-  return hash;
-}
-#else
-uint32_t hashkit_hsieh(const char *, size_t , void *)
-{
-  return 0;
-}
-#endif