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> */
29typedef u_int8_t uint8_t; /* u_int8_t is defined in <machine/types.h> */
30typedef u_int16_t uint16_t; /* u_int16_t is defined in <machine/types.h> */
31typedef u_int32_t uint32_t; /* u_int32_t is defined in <machine/types.h> */
32typedef 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 */
36typedef int8_t int_least8_t;
37typedef int16_t int_least16_t;
38typedef int32_t int_least32_t;
39typedef int64_t int_least64_t;
40typedef uint8_t uint_least8_t;
41typedef uint16_t uint_least16_t;
42typedef uint32_t uint_least32_t;
43typedef uint64_t uint_least64_t;
44
45
46/* 7.18.1.3 Fastest-width integer types */
47typedef int8_t int_fast8_t;
48typedef int16_t int_fast16_t;
49typedef int32_t int_fast32_t;
50typedef int64_t int_fast64_t;
51typedef uint8_t uint_fast8_t;
52typedef uint16_t uint_fast16_t;
53typedef uint32_t uint_fast32_t;
54typedef 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 */
63typedef long long intmax_t;
64typedef 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_ */
214