compute the CRC-32 of a data stream.

There are multiple 16-bit CRC polynomials in common use, but this is the standard CRC-32 polynomial, first popularized by Ethernet.

crc32.c compute the CRC-32 of a data stream.Definitions for doing the crc four data bytes at a time. -crc32.c compute the CRC-32 of a data stream.Definitions for doing the crc four data bytes at a time.

crc32 源代码,包括16位和32位crc算法，循环冗余校验码（CRC）的基本原理是：在K位信息码后再拼接R位的校验码，整个编码长度为N位，因此，这种编码又叫（N，K）码。对于一个给定的（N，K）码，可以证明存在一个最高次幂为N-K R的多项式G(x)。根据G(x)可以生成K位信息的校验码，而G(x)叫做这个CRC码的生成多项式-crc32 functions