arithmetic-exprn rel-op arithmetic-exprn
or character-exprn rel-op character-exprn
In either case the resulting expression has the logical type. The
relational operator rel-op can be any of the following:
| .EQ. | equal to |
| .GE. | greater than or equal to |
| .GT. | greater than |
| .LE. | less than or equal to |
| .LT. | less than |
| .NE. | not equal to |
Note that these operators need a decimal point at either end to distinguish them from symbolic names.