1    	/* Copyright (C) 1991-2015 Free Software Foundation, Inc.
2    	   This file is part of the GNU C Library.
3    	
4    	   The GNU C Library is free software; you can redistribute it and/or
5    	   modify it under the terms of the GNU Lesser General Public
6    	   License as published by the Free Software Foundation; either
7    	   version 2.1 of the License, or (at your option) any later version.
8    	
9    	   The GNU C Library is distributed in the hope that it will be useful,
10   	   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   	   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   	   Lesser General Public License for more details.
13   	
14   	   You should have received a copy of the GNU Lesser General Public
15   	   License along with the GNU C Library; if not, see
16   	   <http://www.gnu.org/licenses/>.  */
17   	
18   	/*
19   	 *	ISO C99 Standard: 7.10/5.2.4.2.1 Sizes of integer types	<limits.h>
20   	 */
21   	
22   	#ifndef _LIBC_LIMITS_H_
23   	#define _LIBC_LIMITS_H_	1
24   	
25   	#include <features.h>
26   	
27   	
28   	/* Maximum length of any multibyte character in any locale.
29   	   We define this value here since the gcc header does not define
30   	   the correct value.  */
31   	#define MB_LEN_MAX	16
32   	
33   	
34   	/* If we are not using GNU CC we have to define all the symbols ourself.
35   	   Otherwise use gcc's definitions (see below).  */
36   	#if !defined __GNUC__ || __GNUC__ < 2
37   	
38   	/* We only protect from multiple inclusion here, because all the other
39   	   #include's protect themselves, and in GCC 2 we may #include_next through
40   	   multiple copies of this file before we get to GCC's.  */
41   	# ifndef _LIMITS_H
42   	#  define _LIMITS_H	1
43   	
44   	#include <bits/wordsize.h>
45   	
46   	/* We don't have #include_next.
47   	   Define ANSI <limits.h> for standard 32-bit words.  */
48   	
49   	/* These assume 8-bit `char's, 16-bit `short int's,
50   	   and 32-bit `int's and `long int's.  */
51   	
52   	/* Number of bits in a `char'.	*/
53   	#  define CHAR_BIT	8
54   	
55   	/* Minimum and maximum values a `signed char' can hold.  */
56   	#  define SCHAR_MIN	(-128)
57   	#  define SCHAR_MAX	127
58   	
59   	/* Maximum value an `unsigned char' can hold.  (Minimum is 0.)  */
60   	#  define UCHAR_MAX	255
61   	
62   	/* Minimum and maximum values a `char' can hold.  */
63   	#  ifdef __CHAR_UNSIGNED__
64   	#   define CHAR_MIN	0
65   	#   define CHAR_MAX	UCHAR_MAX
66   	#  else
67   	#   define CHAR_MIN	SCHAR_MIN
68   	#   define CHAR_MAX	SCHAR_MAX
69   	#  endif
70   	
71   	/* Minimum and maximum values a `signed short int' can hold.  */
72   	#  define SHRT_MIN	(-32768)
73   	#  define SHRT_MAX	32767
74   	
75   	/* Maximum value an `unsigned short int' can hold.  (Minimum is 0.)  */
76   	#  define USHRT_MAX	65535
77   	
78   	/* Minimum and maximum values a `signed int' can hold.  */
79   	#  define INT_MIN	(-INT_MAX - 1)
80   	#  define INT_MAX	2147483647
81   	
82   	/* Maximum value an `unsigned int' can hold.  (Minimum is 0.)  */
83   	#  define UINT_MAX	4294967295U
84   	
85   	/* Minimum and maximum values a `signed long int' can hold.  */
86   	#  if __WORDSIZE == 64
87   	#   define LONG_MAX	9223372036854775807L
88   	#  else
89   	#   define LONG_MAX	2147483647L
90   	#  endif
91   	#  define LONG_MIN	(-LONG_MAX - 1L)
92   	
93   	/* Maximum value an `unsigned long int' can hold.  (Minimum is 0.)  */
94   	#  if __WORDSIZE == 64
95   	#   define ULONG_MAX	18446744073709551615UL
96   	#  else
97   	#   define ULONG_MAX	4294967295UL
98   	#  endif
99   	
100  	#  ifdef __USE_ISOC99
101  	
102  	/* Minimum and maximum values a `signed long long int' can hold.  */
103  	#   define LLONG_MAX	9223372036854775807LL
104  	#   define LLONG_MIN	(-LLONG_MAX - 1LL)
105  	
106  	/* Maximum value an `unsigned long long int' can hold.  (Minimum is 0.)  */
107  	#   define ULLONG_MAX	18446744073709551615ULL
108  	
109  	#  endif /* ISO C99 */
110  	
111  	# endif	/* limits.h  */
112  	#endif	/* GCC 2.  */
113  	
114  	#endif	/* !_LIBC_LIMITS_H_ */
115  	
116  	 /* Get the compiler's limits.h, which defines almost all the ISO constants.
117  	
118  	    We put this #include_next outside the double inclusion check because
119  	    it should be possible to include this file more than once and still get
120  	    the definitions from gcc's header.  */
121  	#if defined __GNUC__ && !defined _GCC_LIMITS_H_
122  	/* `_GCC_LIMITS_H_' is what GCC's file defines.  */
123  	# include_next <limits.h>
124  	#endif
125  	
126  	/* The <limits.h> files in some gcc versions don't define LLONG_MIN,
127  	   LLONG_MAX, and ULLONG_MAX.  Instead only the values gcc defined for
128  	   ages are available.  */
129  	#if defined __USE_ISOC99 && defined __GNUC__
130  	# ifndef LLONG_MIN
131  	#  define LLONG_MIN	(-LLONG_MAX-1)
132  	# endif
133  	# ifndef LLONG_MAX
134  	#  define LLONG_MAX	__LONG_LONG_MAX__
135  	# endif
136  	# ifndef ULLONG_MAX
137  	#  define ULLONG_MAX	(LLONG_MAX * 2ULL + 1)
138  	# endif
139  	#endif
140  	
141  	#ifdef	__USE_POSIX
142  	/* POSIX adds things to <limits.h>.  */
143  	# include <bits/posix1_lim.h>
144  	#endif
145  	
146  	#ifdef	__USE_POSIX2
147  	# include <bits/posix2_lim.h>
148  	#endif
149  	
150  	#ifdef	__USE_XOPEN
151  	# include <bits/xopen_lim.h>
152  	#endif
153