code: public static int cusparseShybmv(
          cusparseHandle handle, 
          int transA, 
          Pointer alpha, 
          cusparseMatDescr descrA, 
          cusparseHybMat hybA, 
          Pointer x, 
          Pointer beta, 
          Pointer y)
      {
          return checkResult(cusparseShybmvNative(handle, transA, alpha, descrA, hybA, x, beta, y));
      }
docs: Description: Matrix-vector multiplication  y = alpha * op(A) * x  + beta * y,
  where A is a sparse matrix in HYB storage format, x and y are dense vectors.