CRC.rar_crc 效验_crc效验

/* CRCTABLE 1.0 Public Domain by Celso Minnitti, Jr Feb-06-94 */ /* This program will generate the crc16_table and CRC32_table */ /* that are used by CMCRC.ASM */ #include <stdio.h> #define CRC32_POLYNOMIAL 0xEDB88320 #define CRC16_POLYNOMIAL 0xA001 void main() { unsigned long crc32Table[256]; unsigned int crc16Table[256]; unsigned int crc; unsigned long crc32; int i, j; printf("CRCTABLE 1.0 Public Domain by Celso Minnitti, Jr Feb-06-94\n\n"); for (i = 0; i < 256; i++) { crc = i; for (j = 8; j > 0; j--) { if (crc & 1) crc = (crc >> 1) ^ CRC16_POLYNOMIAL; else crc >>= 1; } crc16Table[i] = crc; } printf("\ncrc16_table\tlabel\tword"); for (i = 0; i < 256; i++) { if (!(i%32) && i) printf("\n; %Xh", i); if (!(i%8)) printf("\n\tdw "); if (i%8 != 7) printf("0%04Xh, ", crc16Table[i]); else printf("0%04Xh", crc16Table[i]); } printf("\n"); for (i = 0; i < 256; i++) { crc32 = i; for (j = 8; j > 0; j--) { if (crc32 & 1) crc32 = (crc32 >> 1) ^ CRC32_POLYNOMIAL; else crc32 >>= 1; } crc32Table[i] = crc32; } printf("\ncrc32_table\tlabel\tdword"); for (i = 0; i < 256; i++) { if (!(i%16) && i) printf("\n; %Xh", i); if (!(i%4)) printf("\n\tdd "); if (i%4 != 3) printf("0%08lXh, ", crc32Table[i]); else printf("0%08lXh", crc32Table[i]); } }