code: public static int cusparseScsr2csru(
          cusparseHandle handle, 
          int m, 
          int n, 
          int nnz, 
          cusparseMatDescr descrA, 
          Pointer csrVal, 
          Pointer csrRowPtr, 
          Pointer csrColInd, 
          csru2csrInfo info, 
          Pointer pBuffer)
      {
          return checkResult(cusparseScsr2csruNative(handle, m, n, nnz, descrA, csrVal, csrRowPtr, csrColInd, info, pBuffer));
      }
docs: Description: Wrapper that un-sorts sparse matrix stored in CSR format
  (without exposing the permutation).