Function FindFirstTrackdir

src/track_func.h:211–215

* Returns first Trackdir from TrackdirBits or INVALID_TRACKDIR * * This function returns the first Trackdir in the given TrackdirBits value or * INVALID_TRACKDIR if the value is TRACKDIR_BIT_NONE. The TrackdirBits must * not be INVALID_TRACKDIR_BIT. * * @param trackdirs The TrackdirBits value * @return The first Trackdir from the TrackdirBits or INVALID_TRACKDIR on TRACKDIR_BIT_NONE. * @pr

 * @see RemoveFirstTrackdir
 */
inline Trackdir FindFirstTrackdir(TrackdirBits trackdirs)
{
	assert((trackdirs & ~TRACKDIR_BIT_MASK) == TRACKDIR_BIT_NONE);
	return (trackdirs != TRACKDIR_BIT_NONE) ? (Trackdir)FindFirstBit(trackdirs) : INVALID_TRACKDIR;
}

/*
 * Functions describing logical relations between Tracks, TrackBits, Trackdirs