20 lines
424 B
JavaScript
20 lines
424 B
JavaScript
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import defaultSource from "./defaultSource.js";
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import gamma from "./gamma.js";
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export default (function sourceRandomBeta(source) {
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var G = gamma.source(source);
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function randomBeta(alpha, beta) {
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var X = G(alpha),
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Y = G(beta);
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return function() {
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var x = X();
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return x === 0 ? 0 : x / (x + Y());
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};
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}
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randomBeta.source = sourceRandomBeta;
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return randomBeta;
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})(defaultSource);
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