PK_ERROR_code_t PK_ATTRIB_ask_ints
(
--- received arguments ---
PK_ATTRIB_t     attrib,             --- attribute
int             field_no,           --- field number (>= 0 )

--- returned arguments ---
int      *const n_ints,             --- number of ints    (>= 0)
int     **const ints                --- integers (optional)
)


This function returns the array of integers from field field_no
of the given attribute.


Specific Errors:
    PK_ERROR_bad_field_number       The attribute does not have a field with
                                    this number
    PK_ERROR_field_of_wrong_type    The field is not an integer field


The output array ints is optional.  If it is set to NULL, the function
will only return the number of integers in the field.