22 lines
440 B
JavaScript
22 lines
440 B
JavaScript
// Generated by CoffeeScript 1.7.1
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var Buffer, create;
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Buffer = require('buffer').Buffer;
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create = require('./create');
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module.exports = create(function(buf, previous) {
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var accum, byte, crc, _i, _len;
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if (!Buffer.isBuffer(buf)) {
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buf = Buffer(buf);
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}
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crc = ~~previous;
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accum = 0;
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for (_i = 0, _len = buf.length; _i < _len; _i++) {
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byte = buf[_i];
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accum += byte;
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}
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crc += accum % 256;
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return crc % 256;
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});
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