compare()

int SPolySorter::compare ( value a, value b )

inline

Definition at line 748 of file gb-default.cpp.

  {
    // returns: LT if a < b, EQ if a == b, GT if a > b.
    /* Compare using degree, then type, then lead term of spoly */
    int result;
    int cmp = a->deg - b->deg;
    if (cmp < 0)
      result = GT;
    else if (cmp > 0)
      result = LT;
    else
      {
        gbvector *a1 =
            (a->type > gbA::SPAIR::SPAIR_SKEW ? a->f() : a->lead_of_spoly);
        gbvector *b1 =
            (b->type > gbA::SPAIR::SPAIR_SKEW ? b->f() : b->lead_of_spoly);
        if (a1 == nullptr)
          {
            if (b1 == nullptr)
              result = EQ;
            else
              result = LT;
          }
        else
          {
            if (!b1)
              result = GT;
            else
              result = R->gbvector_compare(F, a1, b1);
          }
      }
    return result;
  }

References gbA::spair::deg, EQ, F, gbA::spair::f, GT, gbA::spair::lead_of_spoly, LT, R, result(), gbA::SPAIR_SKEW, and gbA::spair::type.

Referenced by operator()().