// Generated by CoffeeScript 1.9.2
var Buffer, create;

Buffer = require('buffer').Buffer;

create = require('./create');

module.exports = create('crc1', function(buf, previous) {
  var accum, byte, crc, i, len;
  if (!Buffer.isBuffer(buf)) {
    buf = Buffer(buf);
  }
  crc = ~~previous;
  accum = 0;
  for (i = 0, len = buf.length; i < len; i++) {
    byte = buf[i];
    accum += byte;
  }
  crc += accum % 256;
  return crc % 256;
});