code: public static int cusparseXbsrsv2_zeroPivot(
          cusparseHandle handle, 
          bsrsv2Info info, 
          Pointer position)
      {
          return checkResult(cusparseXbsrsv2_zeroPivotNative(handle, info, position));
      }
docs: <pre>
  Description: Solution of triangular linear system op(A) * x = alpha * f,
  where A is a sparse matrix in block-CSR storage format, rhs f and solution y
  are dense vectors. This routine implements algorithm 2 for this problem.
  Also, it provides a utility function to query size of buffer used.
  </pre>