Function crc32

app/src/IO/Checksum.cpp:150–164

* @brief Computes a 32-bit CRC (CRC-32) using polynomial 0xEDB88320. */

 * @brief Computes a 32-bit CRC (CRC-32) using polynomial 0xEDB88320.
 */
static constexpr uint32_t crc32(const char* data, const int length) noexcept
{
  uint32_t crc = 0xFFFFFFFF;

  for (int i = 0; i < length; ++i) {
    crc ^= static_cast<uint8_t>(data[i]);
    for (int j = 0; j < 8; ++j)
      if (crc & 1)
        crc = (crc >> 1) ^ 0xEDB88320;
      else
        crc >>= 1;
  }

  return ~crc;
}

/**
 * @brief Computes the Adler-32 checksum of the input data.