code: function normalize( x ) {
  	if ( x !== x || isinfinite( x ) ) {
  		return [ x, 0 ];
  	}
  	if ( x !== 0 && abs( x ) < SMALLEST_FLOAT64 ) {
  		return [ x*SCALAR, -52 ];
  	}
  	return [ x, 0 ];
  }
docs: NORMALIZE // 
  FUNCTION: normalize( x )
  Returns a normal number `y` and exponent `exp` satisfying `x = y * 2^exp`.
  
  @param {Number} x - input value
  @returns {Number[]|Null} a two-element array containing `y` and `exp`