external/gpl2/lvm2/dist/lib/misc/util.h

   1 /*      $NetBSD$        */
   2
   3 /*
   4  * Copyright (C) 2007 Red Hat, Inc. All rights reserved.
   5  *
   6  * This file is part of LVM2.
   7  *
   8  * This copyrighted material is made available to anyone wishing to use,
   9  * modify, copy, or redistribute it subject to the terms and conditions
  10  * of the GNU Lesser General Public License v.2.1.
  11  *
  12  * You should have received a copy of the GNU Lesser General Public License
  13  * along with this program; if not, write to the Free Software Foundation,
  14  * Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  15  */
  16
  17 #ifndef _LVM_UTIL_H
  18 #define _LVM_UTIL_H
  19
  20 #define min(a, b) ({ typeof(a) _a = (a); \
  21                      typeof(b) _b = (b); \
  22                      (void) (&_a == &_b); \
  23                      _a < _b ? _a : _b; })
  24
  25 #define max(a, b) ({ typeof(a) _a = (a); \
  26                      typeof(b) _b = (b); \
  27                      (void) (&_a == &_b); \
  28                      _a > _b ? _a : _b; })
  29
  30 #define uninitialized_var(x) x = x
  31
  32 #endif