Function cusparseSpMatSetAttribute 

pub unsafe extern "C" fn cusparseSpMatSetAttribute(
    spMatDescr: cusparseSpMatDescr_t,
    attribute: cusparseSpMatAttribute_t,
    data: *mut c_void,
    dataSize: size_t,
) -> cusparseStatus_t

The function sets the attributes of the sparse matrix descriptor spMatDescr

Attribute	Meaning	Possible Values
cusparseSpMatAttribute_t::CUSPARSE_SPMAT_FILL_MODE	Indicates if the lower or upper part of a matrix is stored in sparse storage	cusparseFillMode_t::CUSPARSE_FILL_MODE_LOWER, cusparseFillMode_t::CUSPARSE_FILL_MODE_UPPER
cusparseSpMatAttribute_t::CUSPARSE_SPMAT_DIAG_TYPE	Indicates if the matrix diagonal entries are unity	cusparseDiagType_t::CUSPARSE_DIAG_TYPE_NON_UNIT, cusparseDiagType_t::CUSPARSE_DIAG_TYPE_UNIT

Parameters

• spMatDescr: Sparse matrix descriptor.
• attribute: Attribute enumerator.
• data: Attribute value.
• dataSize: Size of the attribute in bytes for safety.