/* Last edited on 2008-05-22 09:27:02 by stolfi */

    /* Zeros of {h}: */
    double_vec_t ore = double_vec_new(100);
    double_vec_t oim = double_vec_new(100);
    int nz = 0;
    while (argparser_keyword_present(pp, "-zero"))
      { double_vec_expand(&ore, o->nzeros);
        ore.e[nz] = argparser_get_next_double(pp, -MAX_ZERO, +MAX_ZERO); 
        double_vec_expand(&oim, o->nzeros);
        oim.e[nz] = argparser_get_next_double(pp, -MAX_ZERO, +MAX_ZERO); 
        nz ++;
      }
    o->nzeros = nz;
    o->ore = ore.e;
    o->oim = oim.e;