Enumerations

Enumerations are unique types with values taken from a group of known constants called enumerators.

The table summarizes the public methods available for enumerations.

Method	Returns	Usage
enum1.ConvertTo Numerical()	udisc	Returns the value of the enumerator selected for enum1. The return type depends on the value of the selected enumerator (positive value – udisc, negative value – sdisc).
enum1.min(enum2)	enumeration	Returns the lower of the two enumerators selected for enum1 and enum2.
enum1.max(enum2)	enumeration	Returns the upper of the two enumerators selected for enum1 and enum2.
enum4.between(enum2,enum3)	log	Checks whether the enumerator of enum4 lies between the enumerators selected for enum2 and enum3.
Note All involved enumerations must be of the same type.

In ESDL, these methods can be used as shown in the following example, provided that all enumerations are of the same type:

udisc = enum1.convertToNumerical();

enumMax = enum1.max(enum2);

enumMin = enum1.min(enum2);

logVar = enum1.between(enum2,enum3);

EXAMPLE
All enumerations are of the following type: If enum1, enum2,and enum3 are set as shown in the left figure, udisc, enumMax, enumMin, and logVar are computed as shown in the right figure.