2.2.1.5 Logical Constants

A logical constant represents only the logical values true or false, and takes the following form:

.TRUE.
.FALSE.

Both delimiting periods are required.

Logical data type ranges correspond to their comparable integer data type ranges. For example, the LOGICAL*2 range is the same as the INTEGER*2 range.

For More Information:

For details on integer data type ranges, see Section E.3.