1/*
2 * Copyright (c) 2000-2007 Apple Inc. All rights reserved.
3 *
4 * We build on <machine/types.h> rather than <sys/types.h> in order to
5 * minimize the global namespace pollution (i.e., we'd like to define
6 * *only* those identifiers that the C standard mandates should be
7 * defined by <stdint.h>).   Using <machine/types.h> means that (at
8 * least as of January 2001) all of the extra macros that do get
9 * #defined by #include'ing <stdint.h> are in the implementor's
10 * namespace ("_[A-Z].*" or "__.*").
11 *
12 * The reason that we do #include the relevant ...types.h instead of
13 * creating several "competing" typedefs is to make header collisions
14 * less likely during the transition to C99.
15 *
16 * Caveat:  There are still five extra typedef's defined by doing it
17 * this way:  "u_int{8,16,32,64}_t" and "register_t".  Might be
18 * fixable via pre- and post- #defines, but probably not worth it.
19 */
20
21#ifndef _STDINT_H_
22#define _STDINT_H_
23
24#include <machine/types.h>
25
26/* from ISO/IEC 988:1999 spec */
27
28/* 7.18.1.1 Exact-width integer types */
29                                         /* int8_t is defined in <machine/types.h> */
30                                         /* int16_t is defined in <machine/types.h> */
31                                         /* int32_t is defined in <machine/types.h> */
32                                         /* int64_t is defined in <machine/types.h> */
33typedef u_int8_t              uint8_t;   /* u_int8_t is defined in <machine/types.h> */
34typedef u_int16_t            uint16_t;   /* u_int16_t is defined in <machine/types.h> */
35typedef u_int32_t            uint32_t;   /* u_int32_t is defined in <machine/types.h> */
36typedef u_int64_t            uint64_t;   /* u_int64_t is defined in <machine/types.h> */
37
38
39/* 7.18.1.2 Minumun-width integer types */
40typedef int8_t           int_least8_t;
41typedef int16_t         int_least16_t;
42typedef int32_t         int_least32_t;
43typedef int64_t         int_least64_t;
44typedef uint8_t         uint_least8_t;
45typedef uint16_t       uint_least16_t;
46typedef uint32_t       uint_least32_t;
47typedef uint64_t       uint_least64_t;
48
49
50/* 7.18.1.3 Fastest-width integer types */
51typedef int8_t            int_fast8_t;
52typedef int16_t          int_fast16_t;
53typedef int32_t          int_fast32_t;
54typedef int64_t          int_fast64_t;
55typedef uint8_t          uint_fast8_t;
56typedef uint16_t        uint_fast16_t;
57typedef uint32_t        uint_fast32_t;
58typedef uint64_t        uint_fast64_t;
59
60
61/* 7.18.1.4 Integer types capable of hgolding object pointers */
62                                        /* intptr_t is defined in <machine/types.h> */
63                                        /* uintptr_t is defined in <machine/types.h> */
64
65
66/* 7.18.1.5 Greatest-width integer types */
67typedef long long                intmax_t;
68typedef unsigned long long      uintmax_t;
69
70
71/* "C++ implementations should define these macros only when
72 *  __STDC_LIMIT_MACROS is defined before <stdint.h> is included."
73 * In other words, if C++, then __STDC_LIMIT_MACROS enables the
74 * macros below.  (Note that there also exists a different enabling
75 * macro (__STDC_CONSTANT_MACROS) for the last few, below.)
76 */
77#if (! defined(__cplusplus)) || defined(__STDC_LIMIT_MACROS)
78
79
80/* 7.18.2 Limits of specified-width integer types:
81 *   These #defines specify the minimum and maximum limits
82 *   of each of the types declared above.
83 */
84
85
86/* 7.18.2.1 Limits of exact-width integer types */
87#define INT8_MIN         (-127-1)
88#define INT16_MIN        (-32767-1)
89#define INT32_MIN        (-2147483647-1)
90#define INT64_MIN        (-9223372036854775807LL-1LL)
91
92#define INT8_MAX         +127
93#define INT16_MAX        +32767
94#define INT32_MAX        +2147483647
95#define INT64_MAX        +9223372036854775807LL
96
97#define UINT8_MAX         255
98#define UINT16_MAX        65535
99#define UINT32_MAX        4294967295U
100#define UINT64_MAX        18446744073709551615ULL
101
102/* 7.18.2.2 Limits of minimum-width integer types */
103#define INT_LEAST8_MIN    INT8_MIN
104#define INT_LEAST16_MIN   INT16_MIN
105#define INT_LEAST32_MIN   INT32_MIN
106#define INT_LEAST64_MIN   INT64_MIN
107
108#define INT_LEAST8_MAX    INT8_MAX
109#define INT_LEAST16_MAX   INT16_MAX
110#define INT_LEAST32_MAX   INT32_MAX
111#define INT_LEAST64_MAX   INT64_MAX
112
113#define UINT_LEAST8_MAX   UINT8_MAX
114#define UINT_LEAST16_MAX  UINT16_MAX
115#define UINT_LEAST32_MAX  UINT32_MAX
116#define UINT_LEAST64_MAX  UINT64_MAX
117
118/* 7.18.2.3 Limits of fastest minimum-width integer types */
119#define INT_FAST8_MIN     INT8_MIN
120#define INT_FAST16_MIN    INT16_MIN
121#define INT_FAST32_MIN    INT32_MIN
122#define INT_FAST64_MIN    INT64_MIN
123
124#define INT_FAST8_MAX     INT8_MAX
125#define INT_FAST16_MAX    INT16_MAX
126#define INT_FAST32_MAX    INT32_MAX
127#define INT_FAST64_MAX    INT64_MAX
128
129#define UINT_FAST8_MAX    UINT8_MAX
130#define UINT_FAST16_MAX   UINT16_MAX
131#define UINT_FAST32_MAX   UINT32_MAX
132#define UINT_FAST64_MAX   UINT64_MAX
133
134/* 7.18.2.4 Limits of integer types capable of holding object pointers */
135#if defined(__LP64__)
136#define INTPTR_MIN        INT64_MIN
137#define INTPTR_MAX        INT64_MAX
138#define UINTPTR_MAX       UINT64_MAX
139#else
140#define INTPTR_MIN        INT32_MIN
141#define INTPTR_MAX        INT32_MAX
142#define UINTPTR_MAX       UINT32_MAX
143#endif
144
145/* 7.18.2.5 Limits of greatest-width integer types */
146#define INTMAX_MIN        INT64_MIN
147#define INTMAX_MAX        INT64_MAX
148
149#define UINTMAX_MAX       UINT64_MAX
150
151/* 7.18.3 "Other" */
152#if defined(__LP64__)
153#define PTRDIFF_MIN       INT64_MIN
154#define PTRDIFF_MAX       INT64_MAX
155#else
156#define PTRDIFF_MIN       INT32_MIN
157#define PTRDIFF_MAX       INT32_MAX
158#endif
159/* We have no sig_atomic_t yet, so no SIG_ATOMIC_{MIN,MAX}.
160   Should end up being {-127,127} or {0,255} ... or bigger.
161   My bet would be on one of {U}INT32_{MIN,MAX}. */
162
163#define SIZE_MAX          UINT32_MAX
164
165#ifndef WCHAR_MAX
166#define WCHAR_MAX         INT32_MAX
167#endif
168
169/* We have no wint_t yet, so no WINT_{MIN,MAX}.
170   Should end up being {U}INT32_{MIN,MAX}, depending.  */
171
172
173#endif /* if C++, then __STDC_LIMIT_MACROS enables the above macros */
174
175/* "C++ implementations should define these macros only when
176 *  __STDC_CONSTANT_MACROS is defined before <stdint.h> is included."
177 */
178#if (! defined(__cplusplus)) || defined(__STDC_CONSTANT_MACROS)
179
180/* 7.18.4 Macros for integer constants */
181#define INT8_C(v)    ((int8_t)v)
182#define INT16_C(v)   ((int16_t)v)
183#define INT32_C(v)   (v ## L)
184#define INT64_C(v)   (v ## LL)
185
186#define UINT8_C(v)   ((uint8_t)v)
187#define UINT16_C(v)  ((uint16_t)v)
188#define UINT32_C(v)  (v ## UL)
189#define UINT64_C(v)  (v ## ULL)
190
191#define INTMAX_C(v)  (v ## LL)
192#define UINTMAX_C(v) (v ## ULL)
193
194#endif /* if C++, then __STDC_CONSTANT_MACROS enables the above macros */
195
196#endif /* _STDINT_H_ */
197