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/* MIN, MAX macros.
Copyright (C) 1995, 1998, 2001, 2003, 2005, 2009, 2010 Free Software
Foundation, Inc.
This program 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, or (at your option)
any later version.
This program 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 this program; if not, write to the Free Software Foundation,
Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
#ifndef _MINMAX_H
#define _MINMAX_H
/* Note: MIN, MAX are also defined in <sys/param.h> on some systems
(glibc, IRIX, HP-UX, OSF/1). Therefore you might get warnings about
MIN, MAX macro redefinitions on some systems; the workaround is to
#include this file as the last one among the #include list. */
/* Before we define the following symbols we get the <limits.h> file
since otherwise we get redefinitions on some systems if <limits.h> is
included after this file. Likewise for <sys/param.h>.
If more than one of these system headers define MIN and MAX, pick just
one of the headers (because the definitions most likely are the same). */
#if HAVE_MINMAX_IN_LIMITS_H
# include <limits.h>
#elif HAVE_MINMAX_IN_SYS_PARAM_H
# include <sys/param.h>
#endif
/* Note: MIN and MAX should be used with two arguments of the
same type. They might not return the minimum and maximum of their two
arguments, if the arguments have different types or have unusual
floating-point values. For example, on a typical host with 32-bit 'int',
64-bit 'long long', and 64-bit IEEE 754 'double' types:
MAX (-1, 2147483648) returns 4294967295.
MAX (9007199254740992.0, 9007199254740993) returns 9007199254740992.0.
MAX (NaN, 0.0) returns 0.0.
MAX (+0.0, -0.0) returns -0.0.
and in each case the answer is in some sense bogus. */
/* MAX(a,b) returns the maximum of A and B. */
#ifndef MAX
# define MAX(a,b) ((a) > (b) ? (a) : (b))
#endif
/* MIN(a,b) returns the minimum of A and B. */
#ifndef MIN
# define MIN(a,b) ((a) < (b) ? (a) : (b))
#endif
#endif /* _MINMAX_H */
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