/*
  flowerlib

  (c) 1996--2007 Han-Wen Nienhuys
*/
#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

