8.4.8 InSet Procedure

The InSet procedure provides a way to check whether or not a value lies within a specified set.

Note that I would rather call this routine ``In_Set'', but the F90 standard does not allow underscores in defined operator names (i.e. ``.In_Set.'' is not allowed).

Calling syntax:

Logical = X .InSet. (/Elem1, Elem2, .../)	,
Logical = X .InSet. Set	or
Logical = InSet(X, Set)

Input variables:

	X		Input integer, real or character scalar variable.
	Set		A vector containing the elements of the set to be checked.
	(/Elem1, Elem2, .../)		A means of expressing a set without declaring a vector.

Output variable:

InSet

Logical which is true if X is an element of the set.

The InSet code listing contains additional documentation.