The round function is just 4 SLOC:<p><pre><code> function q( state, val, numerator, denominator ) {
// Continued Fraction mixed with Egyptian fraction "Continued Egyptian Fraction"
// with denominator = val + pos / state[1]
state[0] += numerator / denominator;
state[0] = 1.0 / state[0];
// Standard Continued Fraction with a_i = val, b_i = (a_i-1) + i + 1
state[1] += val;
state[1] = numerator / state[1];
}</code></pre>