 
   // variables to parse file
   string matname;
-  int n, nnz, bsize, nblocks, niters, ndotprods, maxdeg, nmatvecs, nconv;
-  double a, b, neigs, preproc, lanczos, maxres;
+  int neigs, n, nnz, bsize, nblocks, niters, ndotprods, maxdeg, nmatvecs, nconv;
+  double preproc, lanczos, maxres;
 
   int exponent;
   double mantissa;

      // write to file

      // matrix name
      if (ii==1) { output_file << "\\verb|" << matname << "|"; 

        // neigs
        if (nconv > 99) { output_file << " & $" << setprecision(0) << nconv << "$"; }
        else { output_file << " & $\\phantom{0}" << setprecision(0) << nconv << "$"; }
      }
      else { output_file << " & &"; }

      // degree
      if (maxdeg > 99) { output_file << " & $" << setprecision(0) << maxdeg << "$"; }

    for (int ii=0; ii<3; ii++) {

      // read in data
      input_file >> matname >> neigs >> n >> nnz >> bsize >> nblocks >> 
                    niters >> ndotprods >> maxdeg >> nmatvecs >> preproc >> lanczos >>
                    nconv >> maxres;

