pub unsafe extern "C" fn blas_dusmv_(
    transA: *mut blas_trans_type,
    alpha: *mut f64,
    A: *mut blas_sparse_matrix,
    x: *const f64,
    incx: *mut c_int,
    y: *mut f64,
    incy: *mut c_int,
    istat: *mut c_int
)