All files crc16.ts

1
2
3
4
5
6
7
8
9
10
11
12
13
14
17x
9x
1x
 
 
8x
8x
53x
53x
424x
 
 
8x
 
export function crc16(data: Buffer, offset: number = 0): number {
    if (data == null || offset < 0 || offset > data.length - 1) {
        return 0;
    }
 
    let crc = 0xFFFF;
    for (let i = 0; i < data.length; ++i) {
        crc ^= data[offset + i] << 8;
        for (let j = 0; j < 8; ++j) {
            crc = (crc & 0x8000) > 0 ? (crc << 1) ^ 0x1021 : crc << 1;
        }
    }
    return crc & 0xFFFF;
}