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  1. /*
  2.  * Copyright (C) 2005 Jakub Jermar
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup generic
  30.  * @{
  31.  */
  32. /** @file
  33.  */
  34.  
  35. #ifndef KERN_BYTEORDER_H_
  36. #define KERN_BYTEORDER_H_
  37.  
  38. static inline uint64_t uint64_t_byteorder_swap(uint64_t n)
  39. {
  40.     return ((n & 0xff) << 56) |
  41.         ((n & 0xff00) << 40) |
  42.         ((n & 0xff0000) << 24) |
  43.         ((n & 0xff000000LL) << 8) |
  44.         ((n & 0xff00000000LL) >> 8) |
  45.         ((n & 0xff0000000000LL) >> 24) |
  46.         ((n & 0xff000000000000LL) >> 40) |
  47.         ((n & 0xff00000000000000LL) >> 56);
  48. }
  49.  
  50. static inline uint32_t uint32_t_byteorder_swap(uint32_t n)
  51. {
  52.     return ((n & 0xff) << 24) |
  53.         ((n & 0xff00) << 8) |
  54.         ((n & 0xff0000) >> 8) |
  55.         ((n & 0xff000000) >> 24);
  56. }
  57.  
  58. #endif
  59.  
  60. /** @}
  61.  */
  62.