function MutableLong(b00, b16, b32, b48) {
  // Use an array of uint16
  this._arr = [ b00 & 0xffff, b16 & 0xffff, b32 & 0xffff, b48 & 0xffff ];
}
function MutableLong(b00, b16, b32, b48) {
  
  this._arr = [ b00 & 0xffff, b16 & 0xffff, b32 & 0xffff, b48 & 0xffff ];
}
function MutableLong ( b00 , b16 , b32 , b48 ) { // Use an array of uint16 this . _arr = [ b00 & 0xffff , b16 & 0xffff , b32 & 0xffff , b48 & 0xffff ] ; }
Constructs a signed int64 representation.
@constructor
@ignore
Constructs a signed int64 representation .