bsnes/nall/cd/crc16.hpp

19 lines
285 B
C++

#pragma once
//CRC-16/KERMIT
namespace nall::CD {
inline auto CRC16(array_view<uint8_t> data) -> uint16_t {
uint16_t crc = 0;
while(data) {
crc ^= *data++ << 8;
for(uint bit : range(8)) {
crc = crc << 1 ^ (crc & 0x8000 ? 0x1021 : 0);
}
}
return ~crc;
}
}