app-kersten/slot.hh

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#ifndef slot_hh
#define slot_hh

#include "toolbox/inputParam.hh"

namespace concepts {

  // ************************************************************* InputSlot **

  class InputSlot : public InputParameter {
  public:
    InputSlot(InOutParameters& input);
    virtual std::ostream& letters(std::ostream& os) const;
    virtual std::ostream& arguments(std::ostream& os) const;
    virtual std::ostream& description(std::ostream& os) const;
    virtual int input(int opt, const char* optarg);
    const unsigned long long slotWidthReciprocal() const { return slot_; }
  protected:
    virtual std::ostream& info(std::ostream& os) const;
  private:
    unsigned long long slot_;
  };

  InputSlot::InputSlot
  (InOutParameters& input) : InputParameter(input), slot_(0) {
    input_.addDouble("slotwidth", 0.0);
  }

  std::ostream& InputSlot::letters(std::ostream& os) const {
    return os << "w:n";
  }

  std::ostream& InputSlot::arguments(std::ostream& os) const {
    return os << "[-w SLOT] [-n]";
  }

  std::ostream& InputSlot::description(std::ostream& os) const {
    os << "  SLOT        : slot width is 2^(-w), where w is given integer (0)"
       << std::endl
       << "  -n  no slot, full ring" << std::endl;
    return os;
  }

  int InputSlot::input(int opt, const char* optarg) {
    int info = 0;
    switch(opt) {
      case 'w': 
        if (atoi(optarg) >= 0) {
          slot_ = 1;
          for(int i = 0; i < atoi(optarg); ++i)
            slot_ *= 2;
          input_.addDouble("slotwidth", double(1.0)/slot_);
        } else info = 2; break;

      case 'n':
        slot_ = 0;
        input_.addDouble("slotwidth", 0.0);
        break;
      default: info = 1; break;
    }
    return info;
  }

  std::ostream& InputSlot::info(std::ostream& os) const {
    os << "InputSlot(";
    return arguments(os) << ")";
  }

} // namespace concepts

#endif // slot_hh