comparison-operators.hpp

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//
// Copyright (c) 2019 INRIA
//

#ifndef __pinocchio_math_comparison_operators_hpp__
#define __pinocchio_math_comparison_operators_hpp__

namespace pinocchio
{

#define PINOCCHIO_DEFINE_COMPARISON_OP(name,OP) \
    struct name \
    { \
      template<typename T1, typename T2> \
      static bool call(const T1 & a, const T2 & b) \
      { return a OP b;} \
    }
    
  PINOCCHIO_DEFINE_COMPARISON_OP(equal_to_op,==);
  PINOCCHIO_DEFINE_COMPARISON_OP(not_equal_to_op,!=);
  PINOCCHIO_DEFINE_COMPARISON_OP(less_than_op,<);
  PINOCCHIO_DEFINE_COMPARISON_OP(greater_than_op,>);
  PINOCCHIO_DEFINE_COMPARISON_OP(less_than_or_equal_to_op,<=);
  PINOCCHIO_DEFINE_COMPARISON_OP(greater_than_or_equal_to_op,>=);

    
  template<class OP, bool condition, bool default_return_value>
  struct apply_op_if
  {
    template<typename T1, typename T2>
    static bool op(const T1 & /*a*/, const T2 & /*b*/)
    {
      return default_return_value;
    }
  };
  
  template<class OP, bool default_return_value>
  struct apply_op_if<OP,true,default_return_value>
  {
    template<typename T1, typename T2>
    static bool op(const T1 & a, const T2 & b)
    {
      return OP::call(a,b);
    }
  };
}

#endif //#ifndef __pinocchio_math_comparison_operators_hpp__