seedRandom.js 569 B

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  1. exports = function(seed) {
  2. var min =
  3. arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
  4. var max =
  5. arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 1;
  6. var floating =
  7. arguments.length > 3 && arguments[3] !== undefined
  8. ? arguments[3]
  9. : true;
  10. return function() {
  11. seed = (seed * 9301 + 49297) % 233280;
  12. var rnd = seed / 233280.0;
  13. rnd = min + rnd * (max - min);
  14. return floating ? rnd : Math.floor(rnd);
  15. };
  16. };
  17. module.exports = exports;