Function cutensorOperationDescriptorGetAttribute 

pub unsafe extern "C" fn cutensorOperationDescriptorGetAttribute(
    handle: cutensorHandle_t,
    desc: cutensorOperationDescriptor_t,
    attr: cutensorOperationDescriptorAttribute_t,
    buf: *mut c_void,
    sizeInBytes: size_t,
) -> cutensorStatus_t

This function retrieves an attribute of the provided cutensorOperationDescriptor_t object (see cutensorOperationDescriptorAttribute_t).

Block-sparse contraction descriptors only support the attributes cutensorOperationDescriptorAttribute_t::CUTENSOR_OPERATION_DESCRIPTOR_SCALAR_TYPE and cutensorOperationDescriptorAttribute_t::CUTENSOR_OPERATION_DESCRIPTOR_MOVED_BYTES.

Parameters

• handle: Opaque handle holding cuTENSOR’s library context.
• desc: The cutensorOperationDescriptor_t object whos attribute is queried.
• attr: Specifies the attribute that will be retrieved.
• buf: This buffer (of size sizeInBytes) will hold the requested attribute of the provided cutensorOperationDescriptor_t object.
• sizeInBytes: Size of buf (in bytes); see cutensorOperationDescriptorAttribute_t for the exact size.

Return value

• cutensorStatus_t::CUTENSOR_STATUS_INVALID_VALUE: if some input data is invalid (this typically indicates an user error).
• cutensorStatus_t::CUTENSOR_STATUS_NOT_INITIALIZED: if the handle is not initialized.
• cutensorStatus_t::CUTENSOR_STATUS_SUCCESS: The operation completed successfully.