]> git.saurik.com Git - apple/xnu.git/blob - EXTERNAL_HEADERS/stdint.h
xnu-2422.90.20.tar.gz
[apple/xnu.git] / EXTERNAL_HEADERS / stdint.h
1 /*
2 * Copyright (c) 2000-2010 Apple Inc.
3 * All rights reserved.
4 */
5
6 #ifndef _KERNEL_STDINT_H_
7 #define _KERNEL_STDINT_H_
8
9 #ifndef KERNEL
10 /* For user-space code that may include this header */
11 #include_next <stdint.h>
12 #else /* KERNEL */
13
14 #include <machine/types.h>
15
16 #if __LP64__
17 #define __WORDSIZE 64
18 #else
19 #define __WORDSIZE 32
20 #endif
21
22 /* from ISO/IEC 988:1999 spec */
23
24 /* 7.18.1.1 Exact-width integer types */
25 /* int8_t is defined in <machine/types.h> */
26 /* int16_t is defined in <machine/types.h> */
27 /* int32_t is defined in <machine/types.h> */
28 /* int64_t is defined in <machine/types.h> */
29 typedef u_int8_t uint8_t; /* u_int8_t is defined in <machine/types.h> */
30 typedef u_int16_t uint16_t; /* u_int16_t is defined in <machine/types.h> */
31 typedef u_int32_t uint32_t; /* u_int32_t is defined in <machine/types.h> */
32 typedef u_int64_t uint64_t; /* u_int64_t is defined in <machine/types.h> */
33
34
35 /* 7.18.1.2 Minimum-width integer types */
36 typedef int8_t int_least8_t;
37 typedef int16_t int_least16_t;
38 typedef int32_t int_least32_t;
39 typedef int64_t int_least64_t;
40 typedef uint8_t uint_least8_t;
41 typedef uint16_t uint_least16_t;
42 typedef uint32_t uint_least32_t;
43 typedef uint64_t uint_least64_t;
44
45
46 /* 7.18.1.3 Fastest-width integer types */
47 typedef int8_t int_fast8_t;
48 typedef int16_t int_fast16_t;
49 typedef int32_t int_fast32_t;
50 typedef int64_t int_fast64_t;
51 typedef uint8_t uint_fast8_t;
52 typedef uint16_t uint_fast16_t;
53 typedef uint32_t uint_fast32_t;
54 typedef uint64_t uint_fast64_t;
55
56
57 /* 7.18.1.4 Integer types capable of holding object pointers */
58 /* intptr_t is defined in <machine/types.h> */
59 /* uintptr_t is defined in <machine/types.h> */
60
61
62 /* 7.18.1.5 Greatest-width integer types */
63 typedef long long intmax_t;
64 typedef unsigned long long uintmax_t;
65
66 /* 7.18.2 Limits of specified-width integer types:
67 * These #defines specify the minimum and maximum limits
68 * of each of the types declared above.
69 */
70
71
72 /* 7.18.2.1 Limits of exact-width integer types */
73 #define INT8_MAX 127
74 #define INT16_MAX 32767
75 #define INT32_MAX 2147483647
76 #define INT64_MAX 9223372036854775807LL
77
78 #define INT8_MIN -128
79 #define INT16_MIN -32768
80 /*
81 Note: the literal "most negative int" cannot be written in C --
82 the rules in the standard (section 6.4.4.1 in C99) will give it
83 an unsigned type, so INT32_MIN (and the most negative member of
84 any larger signed type) must be written via a constant expression.
85 */
86 #define INT32_MIN (-INT32_MAX-1)
87 #define INT64_MIN (-INT64_MAX-1)
88
89 #define UINT8_MAX 255
90 #define UINT16_MAX 65535
91 #define UINT32_MAX 4294967295U
92 #define UINT64_MAX 18446744073709551615ULL
93
94 /* 7.18.2.2 Limits of minimum-width integer types */
95 #define INT_LEAST8_MIN INT8_MIN
96 #define INT_LEAST16_MIN INT16_MIN
97 #define INT_LEAST32_MIN INT32_MIN
98 #define INT_LEAST64_MIN INT64_MIN
99
100 #define INT_LEAST8_MAX INT8_MAX
101 #define INT_LEAST16_MAX INT16_MAX
102 #define INT_LEAST32_MAX INT32_MAX
103 #define INT_LEAST64_MAX INT64_MAX
104
105 #define UINT_LEAST8_MAX UINT8_MAX
106 #define UINT_LEAST16_MAX UINT16_MAX
107 #define UINT_LEAST32_MAX UINT32_MAX
108 #define UINT_LEAST64_MAX UINT64_MAX
109
110 /* 7.18.2.3 Limits of fastest minimum-width integer types */
111 #define INT_FAST8_MIN INT8_MIN
112 #define INT_FAST16_MIN INT16_MIN
113 #define INT_FAST32_MIN INT32_MIN
114 #define INT_FAST64_MIN INT64_MIN
115
116 #define INT_FAST8_MAX INT8_MAX
117 #define INT_FAST16_MAX INT16_MAX
118 #define INT_FAST32_MAX INT32_MAX
119 #define INT_FAST64_MAX INT64_MAX
120
121 #define UINT_FAST8_MAX UINT8_MAX
122 #define UINT_FAST16_MAX UINT16_MAX
123 #define UINT_FAST32_MAX UINT32_MAX
124 #define UINT_FAST64_MAX UINT64_MAX
125
126 /* 7.18.2.4 Limits of integer types capable of holding object pointers */
127
128 #if __WORDSIZE == 64
129 #define INTPTR_MIN INT64_MIN
130 #define INTPTR_MAX INT64_MAX
131 #else
132 #define INTPTR_MIN INT32_MIN
133 #define INTPTR_MAX INT32_MAX
134 #endif
135
136 #if __WORDSIZE == 64
137 #define UINTPTR_MAX UINT64_MAX
138 #else
139 #define UINTPTR_MAX UINT32_MAX
140 #endif
141
142 /* 7.18.2.5 Limits of greatest-width integer types */
143 #define INTMAX_MIN INT64_MIN
144 #define INTMAX_MAX INT64_MAX
145
146 #define UINTMAX_MAX UINT64_MAX
147
148 /* 7.18.3 "Other" */
149 #if __WORDSIZE == 64
150 #define PTRDIFF_MIN INT64_MIN
151 #define PTRDIFF_MAX INT64_MAX
152 #else
153 #define PTRDIFF_MIN INT32_MIN
154 #define PTRDIFF_MAX INT32_MAX
155 #endif
156
157 /* We have no sig_atomic_t yet, so no SIG_ATOMIC_{MIN,MAX}.
158 Should end up being {-127,127} or {0,255} ... or bigger.
159 My bet would be on one of {U}INT32_{MIN,MAX}. */
160
161 #if __WORDSIZE == 64
162 #define SIZE_MAX UINT64_MAX
163 #else
164 #define SIZE_MAX UINT32_MAX
165 #endif
166
167 #if defined(__STDC_WANT_LIB_EXT1__) && __STDC_WANT_LIB_EXT1__ >= 1
168 #define RSIZE_MAX (SIZE_MAX >> 1)
169 #endif
170
171 #ifndef WCHAR_MAX
172 # ifdef __WCHAR_MAX__
173 # define WCHAR_MAX __WCHAR_MAX__
174 # else
175 # define WCHAR_MAX 0x7fffffff
176 # endif
177 #endif
178
179 /* WCHAR_MIN should be 0 if wchar_t is an unsigned type and
180 (-WCHAR_MAX-1) if wchar_t is a signed type. Unfortunately,
181 it turns out that -fshort-wchar changes the signedness of
182 the type. */
183 #ifndef WCHAR_MIN
184 # if WCHAR_MAX == 0xffff
185 # define WCHAR_MIN 0
186 # else
187 # define WCHAR_MIN (-WCHAR_MAX-1)
188 # endif
189 #endif
190
191 #define WINT_MIN INT32_MIN
192 #define WINT_MAX INT32_MAX
193
194 #define SIG_ATOMIC_MIN INT32_MIN
195 #define SIG_ATOMIC_MAX INT32_MAX
196
197 /* 7.18.4 Macros for integer constants */
198 #define INT8_C(v) (v)
199 #define INT16_C(v) (v)
200 #define INT32_C(v) (v)
201 #define INT64_C(v) (v ## LL)
202
203 #define UINT8_C(v) (v ## U)
204 #define UINT16_C(v) (v ## U)
205 #define UINT32_C(v) (v ## U)
206 #define UINT64_C(v) (v ## ULL)
207
208 #define INTMAX_C(v) (v ## LL)
209 #define UINTMAX_C(v) (v ## ULL)
210
211 #endif /* KERNEL */
212
213 #endif /* _KERNEL_STDINT_H_ */