include/llvm/Support/xxhash.h

   1 /*
   2    xxHash - Extremely Fast Hash algorithm
   3    Header File
   4    Copyright (C) 2012-2016, Yann Collet.
   5
   6    BSD 2-Clause License (http://www.opensource.org/licenses/bsd-license.php)
   7
   8    Redistribution and use in source and binary forms, with or without
   9    modification, are permitted provided that the following conditions are
  10    met:
  11
  12        * Redistributions of source code must retain the above copyright
  13    notice, this list of conditions and the following disclaimer.
  14        * Redistributions in binary form must reproduce the above
  15    copyright notice, this list of conditions and the following disclaimer
  16    in the documentation and/or other materials provided with the
  17    distribution.
  18
  19    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  20    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  21    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  22    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  23    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  24    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  25    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  26    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  27    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  28    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  29    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  30
  31    You can contact the author at :
  32    - xxHash source repository : https://github.com/Cyan4973/xxHash
  33 */
  34
  35 /* based on revision d2df04efcbef7d7f6886d345861e5dfda4edacc1 Removed
  36  * everything but a simple interface for computing XXh64. */
  37
  38 #ifndef LLVM_SUPPORT_XXHASH_H
  39 #define LLVM_SUPPORT_XXHASH_H
  40
  41 #include "llvm/ADT/ArrayRef.h"
  42 #include "llvm/ADT/StringRef.h"
  43
  44 namespace llvm {
  45 uint64_t xxHash64(llvm::StringRef Data);
  46 uint64_t xxHash64(llvm::ArrayRef<uint8_t> Data);
  47 }
  48
  49 #endif