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The NotInSet procedure provides a way to check whether or not a value lies within a specified set.
Note that I would rather call this routine ``Not_In_Set'', but the F90 standard does not allow underscores in defined operator names (i.e. ``.Not_In_Set.'' is not allowed).
Calling syntax:
| Logical = X .NotInSet. (/Elem1, Elem2, .../) | , |
| Logical = X .NotInSet. Set | or |
| Logical = NotInSet(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:
| NotInSet | Logical which is true if X is not an element of the set. |
The NotInSet code listing contains additional documentation.
Michael L. Hall