pub unsafe extern "C" fn cublasDgemv_v2( handle: cublasHandle_t, trans: cublasOperation_t, m: c_int, n: c_int, alpha: *const f64, A: *const f64, lda: c_int, x: *const f64, incx: c_int, beta: *const f64, y: *mut f64, incy: c_int) -> cublasStatus_t