text: /* Source: http://home.thep.lu.se/~bjorn/crc/
   *
   * Simple public domain implementation of the standard CRC32 checksum.
   * Outputs the checksum for each file given as a command line argument.
   * Invalid file names and files that cause errors are silently skipped.
   * The program reads from stdin if it is called with no arguments. */
  
  #include <cstdio>
  #include <cstdint>
  #include <cstdlib>
  
  uint32_t crc32(const void* data, size_t n_bytes);
  