continued-fraction.js

function cf (ps) {
  ps = [...ps].reverse()
  let x0 = 1

  let i = 0
  while (i++ < 10000000) {
    let x1 = x0

    for (let p of ps) {
      x1 = p + 1 / x1
    }

    if (x1 === x0) {
      return x1
    }
    x0 = x1
  }
}