Test recursive factorial on node.js

factorial-node.js

// factorial.js for node.js
BD = require("./bigdecimal"); // https://github.com/jhs/bigdecimal.js
ONE = new BD.BigDecimal.ONE;

// Usage : factorial(BD.BigDecimal("number"))
factorial = function (n) {
    if (n.compareTo(ONE) == 0) {
	return ONE;
    } else {
	return n.multiply(factorial (n.subtract(ONE)));
    }
}

require('repl').start();