text: ///////////////////////////////////////////////////////////////////////////////
  //
  /// \file       crc64_tablegen.c
  /// \brief      Generate crc64_table_le.h and crc64_table_be.h
  ///
  /// Compiling: gcc -std=c99 -o crc64_tablegen crc64_tablegen.c
  /// Add -DWORDS_BIGENDIAN to generate big endian table.
  //
  //  Author:     Lasse Collin
  //
  //  This file has been put into the public domain.
  //  You can do whatever you want with this file.
  //
  ///////////////////////////////////////////////////////////////////////////////
  
  #include <stdio.h>
  #include "common/tuklib_integer.h"
  
  
  static uint64_t crc64_table[4][256];
  
  
  extern void
  init_crc64_table(void)
  {
  	static const uint64_t poly64 = UINT64_C(0xC96C5795D7870F42);
  
  	for (size_t s = 0; s < 4; ++s) {
  		for (size_t b = 0; b < 256; ++b) {
  			uint64_t r = s == 0 ? b : crc64_table[s - 1][b];
  
  			for (size_t i = 0; i < 8; ++i) {
  				if (r & 1)
  					r = (r >> 1) ^ poly64;
  				else
  					r >>= 1;
  			}
  
  			crc64_table[s][b] = r;
  		}
  	}
  
  #ifdef WORDS_BIGENDIAN
  	for (size_t s = 0; s < 4; ++s)
  		for (size_t b = 0; b < 256; ++b)
  			crc64_table[s][b] = bswap64(crc64_table[s][b]);
  #endif
  
  	return;
  }
  
  
  static void
  print_crc64_table(void)
  {
  	printf("/* This file has been automatically generated by "
  			"crc64_tablegen.c. */\n\n"
  			"const uint64_t lzma_crc64_table[4][256] = {\n\t{");
  
  	for (size_t s = 0; s < 4; ++s) {
  		for (size_t b = 0; b < 256; ++b) {
  			if ((b % 2) == 0)
  				printf("\n\t\t");
  
  			printf("UINT64_C(0x%016" PRIX64 ")",
  					crc64_table[s][b]);
  
  			if (b != 255)
  				printf(",%s", (b+1) % 2 == 0 ? "" : " ");
  		}
  
  		if (s == 3)
  			printf("\n\t}\n};\n");
  		else
  			printf("\n\t}, {");
  	}
  
  	return;
  }
  
  
  int
  main(void)
  {
  	init_crc64_table();
  	print_crc64_table();
  	return 0;
  }
  