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C++ Monomial::getVarList方法代码示例

本文整理汇总了C++中Monomial::getVarList方法的典型用法代码示例。如果您正苦于以下问题:C++ Monomial::getVarList方法的具体用法?C++ Monomial::getVarList怎么用?C++ Monomial::getVarList使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在Monomial的用法示例。


在下文中一共展示了Monomial::getVarList方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: decomposeAssertion

bool PseudoBooleanProcessor::decomposeAssertion(Node assertion, bool negated)
{
  if (assertion.getKind() != kind::GEQ)
  {
    return false;
  }
  Assert(assertion.getKind() == kind::GEQ);

  Debug("pbs::rewrites") << "decomposeAssertion" << assertion << std::endl;

  Node l = assertion[0];
  Node r = assertion[1];

  if (r.getKind() != kind::CONST_RATIONAL)
  {
    Debug("pbs::rewrites") << "not rhs constant" << assertion << std::endl;
    return false;
  }
  // don't bother matching on anything other than + on the left hand side
  if (l.getKind() != kind::PLUS)
  {
    Debug("pbs::rewrites") << "not plus" << assertion << std::endl;
    return false;
  }

  if (!Polynomial::isMember(l))
  {
    Debug("pbs::rewrites") << "not polynomial" << assertion << std::endl;
    return false;
  }

  Polynomial p = Polynomial::parsePolynomial(l);
  clear();
  if (negated)
  {
    // (not (>= p r))
    // (< p r)
    // (> (-p) (-r))
    // (>= (-p) (-r +1))
    d_off = (-r.getConst<Rational>());

    if (d_off.value().isIntegral())
    {
      d_off = d_off.value() + Rational(1);
    }
    else
    {
      d_off = Rational(d_off.value().ceiling());
    }
  }
  else
  {
    // (>= p r)
    d_off = r.getConst<Rational>();
    d_off = Rational(d_off.value().ceiling());
  }
  Assert(d_off.value().isIntegral());

  int adj = negated ? -1 : 1;
  for (Polynomial::iterator i = p.begin(), end = p.end(); i != end; ++i)
  {
    Monomial m = *i;
    const Rational& coeff = m.getConstant().getValue();
    if (!(coeff.isOne() || coeff.isNegativeOne()))
    {
      return false;
    }
    Assert(coeff.sgn() != 0);

    const VarList& vl = m.getVarList();
    Node v = vl.getNode();

    if (!isPseudoBoolean(v))
    {
      return false;
    }
    int sgn = adj * coeff.sgn();
    if (sgn > 0)
    {
      d_pos.push_back(v);
    }
    else
    {
      d_neg.push_back(v);
    }
  }
  // all of the variables are pseudoboolean
  // with coefficients +/- and the offsetoff
  return true;
}
开发者ID:CVC4,项目名称:CVC4,代码行数:90,代码来源:pseudo_boolean_processor.cpp


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