internal.h

   1 /*
   2  * Copyright (C) 2007 Oracle.  All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public
   6  * License v2 as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  11  * General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public
  14  * License along with this program; if not, write to the
  15  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  16  * Boston, MA 021110-1307, USA.
  17  */
  18
  19 #ifndef __INTERNAL_H__
  20 #define __INTERNAL_H__
  21
  22 /*
  23  * max/min macro
  24  */
  25 #define min(x,y) ({ \
  26         typeof(x) _x = (x);     \
  27         typeof(y) _y = (y);     \
  28         (void) (&_x == &_y);            \
  29         _x < _y ? _x : _y; })
  30
  31 #define max(x,y) ({ \
  32         typeof(x) _x = (x);     \
  33         typeof(y) _y = (y);     \
  34         (void) (&_x == &_y);            \
  35         _x > _y ? _x : _y; })
  36
  37 #define min_t(type,x,y) \
  38         ({ type __x = (x); type __y = (y); __x < __y ? __x: __y; })
  39 #define max_t(type,x,y) \
  40         ({ type __x = (x); type __y = (y); __x > __y ? __x: __y; })
  41
  42 #endif