インテル® Fortran コンパイラー 19.0 デベロッパー・ガイドおよびリファレンス
C function prototype: Updates a C descriptor for a Fortran pointer to be associated with the whole of a given object or to be disassociated.
int CFI_setpointer(CFI_cdesc_t *result, CFI_cdesc_t *source,
const CFI_index_t lower_bounds[]);
Formal Parameters:
result |
The address of a C descriptor for a Fortran pointer. It is updated using information from the source and lower_bounds arguments. |
source |
A null pointer or the address of a C descriptor for a nonallocatable nonpointer data object, an allocated allocatable object, or a data pointer object. If source is not a null pointer, the corresponding values of the elem_len, rank, and type members must be the same in the C descriptors with the addresses source and result. |
lower_bounds |
If source is not a null pointer and source->rank is nonzero, lower_bounds must be a null pointer or the address of an array with at least source->rank elements. |
Successful execution of CFI_setpointer updates the base_addr and dim members of the C descriptor with the address result as follows:
If source is a null pointer or the address of a C descriptor for a disassociated pointer, the updated C descriptor describes a disassociated pointer.
Otherwise, the C descriptor with the address result becomes a C descriptor for the object described by the C descriptor with the address source, except that if source->rank is nonzero and lower_bounds is not a null pointer, the lower bounds are replaced by the values of the first source->rank elements of the lower_bounds array.
The result is an error indicator.
If ptr is already the address of a C descriptor for an array pointer of rank 1, the following code updates it to be a C descriptor for a pointer to the same array with lower bound 0:
CFI_index_t lower_bounds[1];
int ind;
lower_bounds[0] = 0;
ind = CFI_setpointer(ptr, ptr, lower_bounds);