/*
  This file is part of LilyPond, the GNU music typesetter.

  Copyright (C) 1996--2009 Han-Wen Nienhuys

  LilyPond is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  LilyPond is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with LilyPond.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef COMPARE_HH
#define COMPARE_HH

#define ONE_OPERATOR(type, function, op)	\
  inline bool					\
  operator op (type t1, type t2)		\
  {						\
    return function (t1, t2) op 0;		\
  }

/**  handy notations for a signed comparison.
     make the operators{<,<=,==,>=,>} and the MAX and MIN of two.
     Please fill a & in the type argument if necessary.
*/
#define TEMPLATE_INSTANTIATE_COMPARE(type, function, prefix)		\
  prefix ONE_OPERATOR (type, function, >)				\
    prefix ONE_OPERATOR (type, function, >=)				\
    prefix ONE_OPERATOR (type, function, ==)				\
    prefix ONE_OPERATOR (type, function, !=)				\
    prefix ONE_OPERATOR (type, function, <)				\
    prefix ONE_OPERATOR (type, function, <=)				\
    /* namespace std { */						\
    prefix inline type max (type t1, type t2) { return (t1 > t2) ? t1 : t2; } \
    prefix inline type min (type t1, type t2) { return (t1 < t2) ? t1 : t2; } \
  /* } */								\
  /* stupid fix to allow ; */						\
  prefix bool operator < (type t1, type t2)

#define INSTANTIATE_COMPARE(type, func) TEMPLATE_INSTANTIATE_COMPARE (type, func,)

#endif

