
.. _program_listing_file_library_include_rocrand_rocrand_threefry_common.h:

Program Listing for File rocrand_threefry_common.h
==================================================

|exhale_lsh| :ref:`Return to documentation for file <file_library_include_rocrand_rocrand_threefry_common.h>` (``library/include/rocrand/rocrand_threefry_common.h``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   // Copyright (c) 2022 Advanced Micro Devices, Inc. All rights reserved.
   //
   // Permission is hereby granted, free of charge, to any person obtaining a copy
   // of this software and associated documentation files (the "Software"), to deal
   // in the Software without restriction, including without limitation the rights
   // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   // copies of the Software, and to permit persons to whom the Software is
   // furnished to do so, subject to the following conditions:
   //
   // The above copyright notice and this permission notice shall be included in
   // all copies or substantial portions of the Software.
   //
   // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
   // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   // THE SOFTWARE.
   
   /*
   Copyright 2010-2011, D. E. Shaw Research.
   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.
   
   * Neither the name of D. E. Shaw Research nor the names of its
     contributors may 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.
   */
   
   #ifndef ROCRAND_THREEFRY_COMMON_H_
   #define ROCRAND_THREEFRY_COMMON_H_
   
   #ifndef FQUALIFIERS
       #define FQUALIFIERS __forceinline__ __device__
   #endif // FQUALIFIERS
   
   #include "rocrand/rocrand_common.h"
   
   // C240 constant for Skein Hash function Threefish
   #define SKEIN_MK_64(hi32, lo32) ((lo32) + (((unsigned long long)(hi32)) << 32))
   #define SKEIN_KS_PARITY64 SKEIN_MK_64(0x1BD11BDA, 0xA9FC1A22)
   #define SKEIN_KS_PARITY32 0x1BD11BDA
   
   namespace rocrand_device
   {
   
   template<typename value>
   FQUALIFIERS value rotl(value x, int d);
   
   template<>
   FQUALIFIERS unsigned long long rotl<unsigned long long>(unsigned long long x, int d)
   {
       return ((x << d) | (x >> (64 - d) & 63));
   };
   
   template<>
   FQUALIFIERS unsigned int rotl<unsigned int>(unsigned int x, int d)
   {
       return (x << (d & 31)) | (x >> ((32 - d) & 31));
   };
   
   template<typename value>
   FQUALIFIERS value skein_ks_parity();
   
   template<>
   FQUALIFIERS unsigned int skein_ks_parity<unsigned int>()
   {
       return SKEIN_KS_PARITY32;
   }
   
   template<>
   FQUALIFIERS unsigned long long skein_ks_parity<unsigned long long>()
   {
       return SKEIN_KS_PARITY64;
   }
   
   } // end namespace rocrand_device
   
   #endif // ROCRAND_THREEFRY_COMMON_H_
