pub unsafe extern "C" fn rsb_mtx_get_csr(
    typecode: rsb_type_t,
    mtxAp: *const rsb_mtx_t,
    VA: *mut c_void,
    RP: *mut rsb_nnz_idx_t,
    JA: *mut rsb_coo_idx_t,
    flags: rsb_flags_t
) -> rsb_err_t