76 lines
2.9 KiB
JavaScript
76 lines
2.9 KiB
JavaScript
'use strict';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
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var _rng = require('../rng');
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var _rng2 = _interopRequireDefault(_rng);
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function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
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function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }
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function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }
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var RNGXOR128 = function (_RNG) {
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_inherits(RNGXOR128, _RNG);
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function RNGXOR128(seed, opts) {
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_classCallCheck(this, RNGXOR128);
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var _this = _possibleConstructorReturn(this, (RNGXOR128.__proto__ || Object.getPrototypeOf(RNGXOR128)).call(this));
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_this.x = 0;
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_this.y = 0;
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_this.z = 0;
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_this.w = 0;
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_this.seed(seed, opts);
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return _this;
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}
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_createClass(RNGXOR128, [{
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key: 'next',
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value: function next() {
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var t = this.x ^ this.x << 1;
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this.x = this.y;
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this.y = this.z;
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this.z = this.w;
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this.w = this.w ^ (this.w >>> 19 ^ t ^ t >>> 8);
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return (this.w >>> 0) / 0x100000000;
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}
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}, {
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key: 'seed',
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value: function seed(_seed, opts) {
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// this._rng = seedrandom(this._seed(seed, opts))
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this.x = this._seed(_seed, opts);
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// discard an initial batch of 64 values
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for (var i = 0; i < 64; ++i) {
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this.next();
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}
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}
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}, {
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key: 'clone',
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value: function clone(seed, opts) {
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return new RNGXOR128(seed, opts);
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}
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}, {
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key: 'name',
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get: function get() {
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return 'xor128';
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}
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}]);
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return RNGXOR128;
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}(_rng2.default);
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exports.default = RNGXOR128;
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//# sourceMappingURL=xor128.js.map
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