random/dist/esm/distributions/binomial.js

Seedable random number generator supporting many common distributions.

import { numberValidator } from '../validation';
export default (random, n = 1, p = 0.5) => {
    numberValidator(n).isInt().isPositive();
    numberValidator(p).greaterThanOrEqual(0).lessThan(1);
    return () => {
        let i = 0;
        let x = 0;
        while (i++ < n) {
            if (random.next() < p) {
                x++;
            }
        }
        return x;
    };
};
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