docs: function UINT64 (a00, a16, a32, a48) {
  		if ( !(this instanceof UINT64) )
  			return new UINT64(a00, a16, a32, a48)
  
  		this.remainder = null
  		if (typeof a00 == 'string')
  			return fromString.call(this, a00, a16)
  
  		if (typeof a16 == 'undefined')
  			return fromNumber.call(this, a00)
  
  		fromBits.apply(this, arguments)
  	}