1 /* Copyright (C) 1991, 1992, 1996, 1997, 1998, 1999, 2000, 2005
2    Free Software Foundation, Inc.
3    This file is part of the GNU C Library.
4 
5    The GNU C Library is free software; you can redistribute it and/or
6    modify it under the terms of the GNU Lesser General Public
7    License as published by the Free Software Foundation; either
8    version 2.1 of the License, or (at your option) any later version.
9 
10    The GNU C Library is distributed in the hope that it will be useful,
11    but WITHOUT ANY WARRANTY; without even the implied warranty of
12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13    Lesser General Public License for more details.
14 
15    You should have received a copy of the GNU Lesser General Public
16    License along with the GNU C Library; if not, see
17    <http://www.gnu.org/licenses/>.  */
18 
19 /*
20  *	ISO C99 Standard: 7.10/5.2.4.2.1 Sizes of integer types	<limits.h>
21  */
22 
23 #ifndef _LIBC_LIMITS_H_
24 #define _LIBC_LIMITS_H_	1
25 
26 #include <features.h>
27 
28 
29 /* Maximum length of any multibyte character in any locale.
30    We define this value here since the gcc header does not define
31    the correct value.  */
32 #define MB_LEN_MAX	16
33 
34 
35 /* If we are not using GNU CC we have to define all the symbols ourself.
36    Otherwise use gcc's definitions (see below).  */
37 #if !defined __GNUC__ || __GNUC__ < 2
38 
39 /* We only protect from multiple inclusion here, because all the other
40    #include's protect themselves, and in GCC 2 we may #include_next through
41    multiple copies of this file before we get to GCC's.  */
42 # ifndef _LIMITS_H
43 #  define _LIMITS_H	1
44 
45 #include <bits/wordsize.h>
46 
47 /* We don't have #include_next.
48    Define ANSI <limits.h> for standard 32-bit words.  */
49 
50 /* These assume 8-bit `char's, 16-bit `short int's,
51    and 32-bit `int's and `long int's.  */
52 
53 /* Number of bits in a `char'.	*/
54 #  define CHAR_BIT	8
55 
56 /* Minimum and maximum values a `signed char' can hold.  */
57 #  define SCHAR_MIN	(-128)
58 #  define SCHAR_MAX	127
59 
60 /* Maximum value an `unsigned char' can hold.  (Minimum is 0.)  */
61 #  define UCHAR_MAX	255
62 
63 /* Minimum and maximum values a `char' can hold.  */
64 #  ifdef __CHAR_UNSIGNED__
65 #   define CHAR_MIN	0
66 #   define CHAR_MAX	UCHAR_MAX
67 #  else
68 #   define CHAR_MIN	SCHAR_MIN
69 #   define CHAR_MAX	SCHAR_MAX
70 #  endif
71 
72 /* Minimum and maximum values a `signed short int' can hold.  */
73 #  define SHRT_MIN	(-32768)
74 #  define SHRT_MAX	32767
75 
76 /* Maximum value an `unsigned short int' can hold.  (Minimum is 0.)  */
77 #  define USHRT_MAX	65535
78 
79 /* Minimum and maximum values a `signed int' can hold.  */
80 #  define INT_MIN	(-INT_MAX - 1)
81 #  define INT_MAX	2147483647
82 
83 /* Maximum value an `unsigned int' can hold.  (Minimum is 0.)  */
84 #  define UINT_MAX	4294967295U
85 
86 /* Minimum and maximum values a `signed long int' can hold.  */
87 #  if __WORDSIZE == 64
88 #   define LONG_MAX	9223372036854775807L
89 #  else
90 #   define LONG_MAX	2147483647L
91 #  endif
92 #  define LONG_MIN	(-LONG_MAX - 1L)
93 
94 /* Maximum value an `unsigned long int' can hold.  (Minimum is 0.)  */
95 #  if __WORDSIZE == 64
96 #   define ULONG_MAX	18446744073709551615UL
97 #  else
98 #   define ULONG_MAX	4294967295UL
99 #  endif
100 
101 #  ifdef __USE_ISOC99
102 
103 /* Minimum and maximum values a `signed long long int' can hold.  */
104 #   define LLONG_MAX	9223372036854775807LL
105 #   define LLONG_MIN	(-LLONG_MAX - 1LL)
106 
107 /* Maximum value an `unsigned long long int' can hold.  (Minimum is 0.)  */
108 #   define ULLONG_MAX	18446744073709551615ULL
109 
110 #  endif /* ISO C99 */
111 
112 # endif	/* limits.h  */
113 #endif	/* GCC 2.  */
114 
115 #endif	/* !_LIBC_LIMITS_H_ */
116 
117  /* Get the compiler's limits.h, which defines almost all the ISO constants.
118 
119     We put this #include_next outside the double inclusion check because
120     it should be possible to include this file more than once and still get
121     the definitions from gcc's header.  */
122 #if defined __GNUC__ && !defined _GCC_LIMITS_H_
123 /* `_GCC_LIMITS_H_' is what GCC's file defines.  */
124 # include_next <limits.h>
125 #endif
126 
127 /* The <limits.h> files in some gcc versions don't define LLONG_MIN,
128    LLONG_MAX, and ULLONG_MAX.  Instead only the values gcc defined for
129    ages are available.  */
130 #if defined __USE_ISOC99 && defined __GNUC__
131 # ifndef LLONG_MIN
132 #  define LLONG_MIN	(-LLONG_MAX-1)
133 # endif
134 # ifndef LLONG_MAX
135 #  define LLONG_MAX	__LONG_LONG_MAX__
136 # endif
137 # ifndef ULLONG_MAX
138 #  define ULLONG_MAX	(LLONG_MAX * 2ULL + 1)
139 # endif
140 #endif
141 
142 #ifdef	__USE_POSIX
143 /* POSIX adds things to <limits.h>.  */
144 # include <bits/posix1_lim.h>
145 #endif
146 
147 #ifdef	__USE_POSIX2
148 # include <bits/posix2_lim.h>
149 #endif
150 
151 #ifdef	__USE_XOPEN
152 # include <bits/xopen_lim.h>
153 #endif
154