text: // Copyright (c) 2014 The Bitcoin developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #ifndef ALISINABIT_COMPAT_BYTESWAP_H
  #define ALISINABIT_COMPAT_BYTESWAP_H
  
  #if defined(HAVE_CONFIG_H)
  #include "config/alisinabit-config.h"
  #endif
  
  #include <stdint.h>
  
  #if defined(HAVE_BYTESWAP_H)
  #include <byteswap.h>
  #endif
  
  #if HAVE_DECL_BSWAP_16 == 0
  inline uint16_t bswap_16(uint16_t x)
  {
      return (x >> 8) | ((x & 0x00ff) << 8);
  }
  #endif // HAVE_DECL_BSWAP16
  
  #if HAVE_DECL_BSWAP_32 == 0
  inline uint32_t bswap_32(uint32_t x)
  {
      return (((x & 0xff000000U) >> 24) | ((x & 0x00ff0000U) >>  8) |
              ((x & 0x0000ff00U) <<  8) | ((x & 0x000000ffU) << 24));
  }
  #endif // HAVE_DECL_BSWAP32
  
  #if HAVE_DECL_BSWAP_64 == 0
  inline uint64_t bswap_64(uint64_t x)
  {
       return (((x & 0xff00000000000000ull) >> 56)
            | ((x & 0x00ff000000000000ull) >> 40)
            | ((x & 0x0000ff0000000000ull) >> 24)
            | ((x & 0x000000ff00000000ull) >> 8)
            | ((x & 0x00000000ff000000ull) << 8)
            | ((x & 0x0000000000ff0000ull) << 24)
            | ((x & 0x000000000000ff00ull) << 40)
            | ((x & 0x00000000000000ffull) << 56));
  }
  #endif // HAVE_DECL_BSWAP64
  
  #endif // ALISINABIT_COMPAT_BYTESWAP_H
  