vartypes.hpp

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//    Copyright 2020-2025 Jij Inc.
 
//    Licensed under the Apache License, Version 2.0 (the "License");
//    you may not use this file except in compliance with the License.
//    You may obtain a copy of the License at
 
//        http://www.apache.org/licenses/LICENSE-2.0
 
//    Unless required by applicable law or agreed to in writing, software
//    distributed under the License is distributed on an "AS IS" BASIS,
//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//    See the License for the specific language governing permissions and
//    limitations under the License.
 
#pragma once
 
#include <iostream>
 
namespace cimod {
  enum class Vartype {
    SPIN = 0,
    BINARY,
    NONE = -1,
  };
 
  inline bool check_vartype( const int32_t &var, const Vartype &vartype ) {
    if ( vartype == Vartype::SPIN ) {
      if ( var == 1 || var == -1 ) {
        return true;
      } else {
        std::cerr << "Spin variable must be +1 or -1." << std::endl;
        return false;
      }
    } else if ( vartype == Vartype::BINARY ) {
      if ( var == 1 || var == 0 ) {
        return true;
      } else {
        std::cerr << "Binary variable must be 1 or 0." << std::endl;
        return false;
      }
    } else {
      std::cerr << "Unknown variable type." << std::endl;
      return false;
    }
  }
} // namespace cimod