cuquantum.custatevec.accessor_create_view¶
- cuquantum.custatevec.accessor_create_view(intptr_t handle, intptr_t sv, int sv_data_type, uint32_t n_index_bits, bit_ordering, uint32_t bit_ordering_len, mask_bit_string, mask_ordering, uint32_t mask_len) -> (intptr_t, size_t)[source]¶
Create accessor to copy elements from the statevector to external buffers.
- Parameters
handle (intptr_t) – The library handle.
sv (intptr_t) – The pointer address (as Python
int
) to the statevector (on device). The statevector is read-only.sv_data_type (cuquantum.cudaDataType) – The data type of the statevector.
n_index_bits (uint32_t) – The number of index bits.
bit_ordering –
A host array of basis bits for the external buffer. It can be
an
int
as the pointer address to the arraya Python sequence of basis bits
bit_ordering_len (uint32_t) – The length of
bit_ordering
.mask_bit_string –
A host array for specifying mask values. It can be
an
int
as the pointer address to the arraya Python sequence of mask values
mask_ordering –
A host array of mask ordering. It can be
an
int
as the pointer address to the arraya Python sequence of index bit ordering
mask_len (uint32_t) – The length of
mask_ordering
.
- Returns
A 2-tuple. The first element is the accessor descriptor (as Python
int
), and the second element is the required workspace size (in bytes).- Return type
See also