check_size_match.hpp

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#ifndef STAN__MATH__ERROR_HANDLING__MATRIX__CHECK_SIZE_MATCH_HPP
#define STAN__MATH__ERROR_HANDLING__MATRIX__CHECK_SIZE_MATCH_HPP

#include <sstream>
#include <boost/type_traits/common_type.hpp>
#include <stan/math/error_handling/dom_err.hpp>

namespace stan {
  namespace math {

    // FIXME: update warnings
    template <typename T_size1, typename T_size2, typename T_result>
    inline bool check_size_match(const char* function,
                                 T_size1 i,
                                 const char* name_i,
                                 T_size2 j,
                                 const char* name_j,
                                 T_result* result) {
      typedef typename boost::common_type<T_size1,T_size2>::type common_type;
      if (static_cast<common_type>(i) == static_cast<common_type>(j))
        return true;

      std::ostringstream msg;
      msg << name_i << " (%1%) and " 
          << name_j << " (" << j << ") must match in size";
      std::string tmp(msg.str());
      return dom_err(function,i,name_i,
                     tmp.c_str(),"",
                     result);
    }

  }
}
#endif