摘要：unsignedcharfun4(unsignedcharc){c=(c&0xaa)>>1|(c&0x55)<<1;c=(c&0xcc)>>2|(c&0x33)<<2;c=(c&0xf0)>>4|(c&0x0f)<<4;returnc;}引用自：http://blog.csdn.net/jakee304/article/details/2152655 阅读全文