Function d3_asin

explainshell/web/static/js/d3.v3.js:1290–1292

(x)

    return Math.acos(Math.max(-1, Math.min(1, x)));
  }
  function d3_asin(x) {
    return x > 1 ? π / 2 : x < -1 ? -π / 2 : Math.asin(x);
  }
  function d3_sinh(x) {
    return (Math.exp(x) - Math.exp(-x)) / 2;
  }