xz/src/liblzma/check/crc64_tablegen.c

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2007-12-08 22:42:33 +00:00
///////////////////////////////////////////////////////////////////////////////
//
/// \file crc64_tablegen.c
/// \brief Generates CRC64 crc64_table.c
///
/// Compiling: gcc -std=c99 -o crc64_tablegen crc64_tablegen.c crc64_init.c
/// Add -DWORDS_BIGENDIAN to generate big endian table.
//
// This code has been put into the public domain.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
//
///////////////////////////////////////////////////////////////////////////////
#include <sys/types.h>
#include <inttypes.h>
#include <stdio.h>
extern void lzma_crc64_init(void);
extern uint64_t lzma_crc64_table[4][256];
int
main()
{
lzma_crc64_init();
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 ")",
lzma_crc64_table[s][b]);
if (b != 255)
printf(", ");
}
if (s == 3)
printf("\n\t}\n};\n");
else
printf("\n\t}, {");
}
return 0;
}