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Viewing changes to drizzled/algorithm/crc32.cc

  • Committer: Siddharth Prakash Singh
  • Date: 2010-03-29 19:59:44 UTC
  • mto: This revision was merged to the branch mainline in revision 1432.
  • Revision ID: spsneo@spsneo-laptop-20100329195944-n4zv64b1lr2a68e5
branch for templatizing drizzled::algorithm::crc32()

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drizzled/algorithm/crc32.cc
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  0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d,
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};
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uint32_t crc32(const char *key, size_t key_length)
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{
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  uint64_t x;
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  uint32_t crc= UINT32_MAX;
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  for (x= 0; x < key_length; x++)
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    crc= (crc >> 8) ^ crc32tab[(crc ^ static_cast<uint8_t>(key[x])) & 0xff];
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  return ~crc;
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}
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} /* namespace algorithm */
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} /* namespace drizzled */