Parameters
- longitude
- The longitude value to convert, where positive values represent east longitude and negative values represent west longitude.
Return Value
A string representing the longitude in GPS degrees format. The format consists of degrees (DD) and minutes (MM) followed by a directional indicator ('E' for east or 'W' for west), without separating symbols. For example, "10012.3456E" represents 100 degrees, 12.3456 minutes east.