1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
| import { Buffer } from 'buffer';
| import createBuffer from './create_buffer';
| import defineCrc from './define_crc';
|
| const crc1 = defineCrc('crc1', function(buf, previous) {
| if (!Buffer.isBuffer(buf)) buf = createBuffer(buf);
|
| let crc = ~~previous;
| let accum = 0;
|
| for (let index = 0; index < buf.length; index++) {
| const byte = buf[index];
| accum += byte;
| }
|
| crc += accum % 256;
| return crc % 256;
| });
|
| export default crc1;
|
|
