Int64.js
function(sep) {
    var out = new Array(8);
    var b = this.buffer, o = this.offset;
    for (var i = 0; i < 8; i++) {
      out[i] = _HEX[b[o+i]];
    }
    return out.join(sep || '');
  }
function(sep) {
    var out = new Array(8);
    var b = this.buffer, o = this.offset;
    for (var i = 0; i < 8; i++) {
      out[i] = _HEX[b[o+i]];
    }
    return out.join(sep || '');
  }
function ( sep ) { var out = new Array ( 8 ) ; var b = this . buffer , o = this . offset ; for ( var i = 0 ; i < 8 ; i ++ ) { out [ i ] = _HEX [ b [ o + i ] ] ; } return out . join ( sep || '' ) ; }
Return a string showing the buffer octets, with MSB on the left.

@param sep separator string. default is '' (empty string)
Return a string showing the buffer octets with MSB on the left .