- #include <stdio.h>
- #include <stdint.h>
- #if 0
- #define POLY 0x04c11db7
- #define POSTFIX "04c11db7"
- #define POLY 0x1EDC6F41
- #define POSTFIX "1edc6f41"
- #define POLY 0xA833982B
- #define POSTFIX "a833982b"
- #define POLY 0x000000AF
- #define POSTFIX "000000af"
- #endif
- #define POLY 0x814141AB
- #define POSTFIX "814141ab"
- int main (void)
- {
- uint32_t i, j;
- uint32_t c;
- uint32_t table[256];
- for (i = 0; i < 256; i++) {
- for (c = i << 24, j = 8; j > 0; --j)
- c = c & 0x80000000 ? (c << 1) ^ POLY : (c << 1);
- table[i] = c;
- }
- printf ("static const uint32_t crc32_table_" POSTFIX "[] =\n{\n");
- for (i = 0; i < 256; i += 4)
- {
- printf (" 0x%08x, 0x%08x, 0x%08x, 0x%08x",
- table[i + 0], table[i + 1], table[i + 2], table[i + 3]);
- if (i + 4 < 256)
- putchar (',');
- putchar ('\n');
- }
- printf ("};\n");
- return 0;
- }
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