Blame gl/minmax.h

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/* MIN, MAX macros.
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   Copyright (C) 1995, 1998, 2001, 2003, 2005, 2009-2016 Free Software
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   Foundation, Inc.
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   This program is free software; you can redistribute it and/or modify
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   it under the terms of the GNU Lesser General Public License as published by
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   the Free Software Foundation; either version 2.1, or (at your option)
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   any later version.
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   This program is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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   GNU Lesser General Public License for more details.
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   You should have received a copy of the GNU Lesser General Public License
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   along with this program; if not, see <http://www.gnu.org/licenses/>.  */
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#ifndef _MINMAX_H
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#define _MINMAX_H
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/* Note: MIN, MAX are also defined in <sys/param.h> on some systems
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   (glibc, IRIX, HP-UX, OSF/1).  Therefore you might get warnings about
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   MIN, MAX macro redefinitions on some systems; the workaround is to
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   #include this file as the last one among the #include list.  */
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/* Before we define the following symbols we get the <limits.h> file
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   since otherwise we get redefinitions on some systems if <limits.h> is
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   included after this file.  Likewise for <sys/param.h>.
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   If more than one of these system headers define MIN and MAX, pick just
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   one of the headers (because the definitions most likely are the same).  */
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#if HAVE_MINMAX_IN_LIMITS_H
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# include <limits.h>
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#elif HAVE_MINMAX_IN_SYS_PARAM_H
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# include <sys/param.h>
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#endif
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/* Note: MIN and MAX should be used with two arguments of the
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   same type.  They might not return the minimum and maximum of their two
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   arguments, if the arguments have different types or have unusual
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   floating-point values.  For example, on a typical host with 32-bit 'int',
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   64-bit 'long long', and 64-bit IEEE 754 'double' types:
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     MAX (-1, 2147483648) returns 4294967295.
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     MAX (9007199254740992.0, 9007199254740993) returns 9007199254740992.0.
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     MAX (NaN, 0.0) returns 0.0.
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     MAX (+0.0, -0.0) returns -0.0.
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   and in each case the answer is in some sense bogus.  */
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/* MAX(a,b) returns the maximum of A and B.  */
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#ifndef MAX
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# define MAX(a,b) ((a) > (b) ? (a) : (b))
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#endif
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/* MIN(a,b) returns the minimum of A and B.  */
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#ifndef MIN
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# define MIN(a,b) ((a) < (b) ? (a) : (b))
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#endif
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#endif /* _MINMAX_H */