Function BLAS_cusdot 

pub unsafe extern "C" fn BLAS_cusdot(
    conj: blas_conj_type,
    nnz: c_int,
    x: *const c_void,
    indx: *const c_int,
    y: *const c_void,
    incy: c_int,
    r: *mut c_void,
    index_base: blas_base_type,
) -> c_int