Intel® Fortran Compiler 17.0 Developer Guide and Reference
Intrinsic Module Inquiry function (Generic): Indicates the association status of one argument, or whether two arguments are associated with the same entity.
USE, INTRINSIC :: ISO_C_BINDING
result = C_ASSOCIATED(c_ptr_1[, c_ptr_2])
c_ptr_1 |
(Input) Is a scalar of derived type C_PTR or C_FUNPTR. |
c_ptr_2 |
(Optional; input) Is a scalar of the same type as c_ptr_1. |
The result is a scalar of type default logical. The result value is one of the following:
If only c_ptr_1 is specified, the result is false if c_ptr_1 is a C null pointer; otherwise, the result is true.
If c_ptr_2 is specified, the result is false if c_ptr_1 is a C null pointer. The result is true if c_ptr_1 is equal to c_ptr_2; otherwise, the result is false.