cuquantum.custatevec.abs2sum_array¶

cuquantum.custatevec.abs2sum_array(intptr_t handle, intptr_t sv, int sv_data_type, uint32_t n_index_bits, intptr_t abs2sum, bit_ordering, uint32_t bit_ordering_len, mask_bit_string, mask_ordering, uint32_t mask_len)[source]¶

Calculates the sum of squared absolute values for a given set of index bits.

Parameters

handle (intptr_t) – The library handle.
sv (intptr_t) – The pointer address (as Python int) to the statevector (on device).
sv_data_type (cuquantum.cudaDataType) – The data type of the statevector.
n_index_bits (uint32_t) – The number of index bits.
abs2sum (intptr_t) – The pointer address (as Python int) to the array (on either host or device) that would hold the sums.
bit_ordering –
A host array of index bit ordering. It can be
- an int as the pointer address to the array
- a Python sequence of index bit ordering
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 array
- a Python sequence of mask values
mask_ordering –
A host array of mask ordering. It can be
- an int as the pointer address to the array
- a Python sequence of index bit ordering
mask_len (uint32_t) – The length of mask_ordering.