A constant expression is an expression in which each operation is intrinsic
and each primary is one of the following:
- A constant or a subobject of a constant.
- An array constructor where each element and the bounds and strides of each
implied-DO are expressions whose primaries are either constant
expressions or implied-DO variables.
- A structure constructor where each component is a constant
expression.
- An elemental intrinsic function reference where each argument is a
constant expression.
- A transformational intrinsic function reference where each argument is a
constant expression.
-
A reference to the transformational intrinsic function NULL.
- A reference to an array inquiry function (except ALLOCATED), a
numeric inquiry function, the BIT_SIZE function, the KIND,
LEN, or NEW_LINE function. Each argument is either a
constant expression or it is a variable whose properties inquired about are
not assumed, not defined by an expression that is not a constant expression,
and not definable by an ALLOCATE or pointer assignment
statement.
- A constant expression enclosed in parentheses.
Any subscript or substring expression within the expression must be a
constant expression.
-48.9
name('Pat','Doe')
TRIM('ABC ')
(MOD(9,4)**3.5)
