Function VM

resources/vega.min.js:19660–19668

(t, e)

    return t > 1 ? HM : t < -1 ? -HM : Math.asin(t);
  }
  function VM(t, e) {
    var n,
      r = t * jM(e),
      i = 30;
    do {
      e -= n = (e + jM(e) - r) / (1 + PM(e));
    } while (qM(n) > IM && --i > 0);
    return e / 2;
  }
  var XM = (function (t, e, n) {
    function r(r, i) {
      return [t * r * PM((i = VM(n, i))), e * jM(i)];