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ToUint16.js 651B

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  1. 'use strict';
  2. var GetIntrinsic = require('../GetIntrinsic');
  3. var $Math = GetIntrinsic('%Math%');
  4. var ToNumber = require('./ToNumber');
  5. var $isNaN = require('../helpers/isNaN');
  6. var $isFinite = require('../helpers/isFinite');
  7. var $sign = require('../helpers/sign');
  8. var $mod = require('../helpers/mod');
  9. var $floor = $Math.floor;
  10. var $abs = $Math.abs;
  11. // http://www.ecma-international.org/ecma-262/5.1/#sec-9.7
  12. module.exports = function ToUint16(value) {
  13. var number = ToNumber(value);
  14. if ($isNaN(number) || number === 0 || !$isFinite(number)) { return 0; }
  15. var posInt = $sign(number) * $floor($abs(number));
  16. return $mod(posInt, 0x10000);
  17. };