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fix

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syui
2025-05-12 05:38:44 +09:00
parent dced21c3f8
commit 6d78bfa46e
8120 changed files with 1161564 additions and 0 deletions
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41
book/node_modules/crc/lib/es6/crc17xmodem.js generated vendored Normal file
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'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _buffer = require('buffer');
var _create_buffer = require('./create_buffer');
var _create_buffer2 = _interopRequireDefault(_create_buffer);
var _define_crc = require('./define_crc');
var _define_crc2 = _interopRequireDefault(_define_crc);
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
var crc16xmodem = (0, _define_crc2.default)('xmodem', function (buf, previous) {
if (!_buffer.Buffer.isBuffer(buf)) buf = (0, _create_buffer2.default)(buf);
var crc = typeof previous !== 'undefined' ? ~~previous : 0x0;
for (var index = 0; index < buf.length; index++) {
var byte = buf[index];
var code = crc >>> 8 & 0xff;
code ^= byte & 0xff;
code ^= code >>> 4;
crc = crc << 8 & 0xffff;
crc ^= code;
code = code << 5 & 0xffff;
crc ^= code;
code = code << 7 & 0xffff;
crc ^= code;
}
return crc;
});
exports.default = crc16xmodem;