Convert to an extended-sized floating point value.
Source position: syshelph.inc line 1046
| public function TSmallIntHelper.ToExtended: Extended; | 
ToDouble converts the SmallInt value to an extended-sized floating point value.
| 
 | Convert to a boolean value. | |
| 
 | Convert to an single-sized floating point value. | |
| 
 | Convert to a double-sized floating point value. | |
| 
 | Convert the value to string. | |
| 
 | Convert to a hexadecimal string representation. |