Diffusion Open Access Compliance Check Tool (OACCT) (dev) Browse

rOACCT/node_modules/core-js/modules/esnext.math.seeded-prng.js
b7129946b228dev

esnext.math.seeded-prng.js
View Options

			var $ = require('../internals/export');
			var anObject = require('../internals/an-object');
			var numberIsFinite = require('../internals/number-is-finite');
			var createIteratorConstructor = require('../internals/iterator-create-constructor');
			var createIterResultObject = require('../internals/create-iter-result-object');
			var InternalStateModule = require('../internals/internal-state');

			var SEEDED_RANDOM = 'Seeded Random';
			var SEEDED_RANDOM_GENERATOR = SEEDED_RANDOM + ' Generator';
			var SEED_TYPE_ERROR = 'Math.seededPRNG() argument should have a "seed" field with a finite value.';
			var setInternalState = InternalStateModule.set;
			var getInternalState = InternalStateModule.getterFor(SEEDED_RANDOM_GENERATOR);
			var $TypeError = TypeError;

			var $SeededRandomGenerator = createIteratorConstructor(function SeededRandomGenerator(seed) {
			setInternalState(this, {
			type: SEEDED_RANDOM_GENERATOR,
			seed: seed % 2147483647
			});
			}, SEEDED_RANDOM, function next() {
			var state = getInternalState(this);
			var seed = state.seed = (state.seed * 1103515245 + 12345) % 2147483647;
			return createIterResultObject((seed & 1073741823) / 1073741823, false);
			});

			// `Math.seededPRNG` method
			// https://github.com/tc39/proposal-seeded-random
			// based on https://github.com/tc39/proposal-seeded-random/blob/78b8258835b57fc2100d076151ab506bc3202ae6/demo.html
			$({ target: 'Math', stat: true, forced: true }, {
			seededPRNG: function seededPRNG(it) {
			var seed = anObject(it).seed;
			if (!numberIsFinite(seed)) throw $TypeError(SEED_TYPE_ERROR);
			return new $SeededRandomGenerator(seed);
			}
			});