collapse_by_bit_string_batched_get_workspace_size#

cuquantum.bindings.custatevec.collapse_by_bit_string_batched_get_workspace_size( intptr_t handle, uint32_t n_svs, bit_strings, norms, ) → size_t[source]#

This function gets the required workspace size for collapse_by_bit_string_batched().

Parameters:

handle (intptr_t) – the handle to the cuStateVec context.
n_svs (uint32_t) – the number of batched state vectors.
bit_strings (object) –
pointer to an array of bit strings, on either host or device. It can be:
- an int as the pointer address to the array, or
- a Python sequence of custatevecIndex_t.
norms (object) –
pointer to an array of normalization constants, on either host or device. It can be:
- an int as the pointer address to the array, or
- a Python sequence of float.

Returns:

workspace size.

Return type:

size_t