ALLOCATED

Inquiry Intrinsic Function (Generic): Indicates whether an allocatable array or allocatable scalar is currently allocated.

result = ALLOCATED ([ARRAY=]array)

result = ALLOCATED ([SCALAR=]scalar)

array	(Input) Must be an allocatable array.
scalar	(Input) Must be an allocatable scalar.

Results

The result is a scalar of type default logical.

The result has the value true if argument array or scalar is currently allocated, false if the argument is not currently allocated, or undefined if its allocation status is undefined.

Note

When the argument keyword ARRAY is used, array must be an allocatable array. When the argument keyword SCALAR is used, scalar must be an allocatable scalar.

Example

  REAL, ALLOCATABLE :: A(:)
  ...
  IF (.NOT. ALLOCATED(A)) ALLOCATE (A (5))

Consider the following:

  REAL, ALLOCATABLE, DIMENSION (:,:,:) :: E
  PRINT *, ALLOCATED (E)       ! Returns the value false
  ALLOCATE (E (12, 15, 20))
  PRINT *, ALLOCATED (E)       ! Returns the value true

ALLOCATED

Results

Note

Example

See Also