Converting two Uint32Array values to Javascript number

Question

I found a code from here that converts Javascript number to inner IEEE representation as two Uint32 values:

function DoubleToIEEE(f)
{
  var buf = new ArrayB         


        

Answer 1

I found a possible solution, which seems to work:

function IEEEToDouble(f)
{
  var buffer = new ArrayBuffer(8);
  (new Uint32Array(buffer))[0] = f[0];
  (new Uint32Array(buffer))[1] = f[1];
  return new Float64Array(buffer)[0];
}

Usage:

var a = DoubleToIEEE(-0.1234);
console.log(a); // [0, 3220176896]
var b = IEEEToDouble(a);
console.log(b); // -0.1234