]>
git.saurik.com Git - apple/xnu.git/blob - EXTERNAL_HEADERS/stdint.h
2 * Copyright (c) 2000,2001 Apple Computer, Inc. All rights reserved.
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 "__.*").
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.
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.
24 #include <machine/types.h>
26 /* from ISO/IEC 988:1999 spec */
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> */
33 typedef u_int8_t
uint8_t; /* u_int8_t is defined in <machine/types.h> */
34 typedef u_int16_t
uint16_t; /* u_int16_t is defined in <machine/types.h> */
35 typedef u_int32_t
uint32_t; /* u_int32_t is defined in <machine/types.h> */
36 typedef u_int64_t
uint64_t; /* u_int64_t is defined in <machine/types.h> */
39 /* 7.18.1.2 Minumun-width integer types */
40 typedef int8_t int_least8_t;
41 typedef int16_t int_least16_t;
42 typedef int32_t int_least32_t;
43 typedef int64_t int_least64_t;
44 typedef uint8_t uint_least8_t;
45 typedef uint16_t uint_least16_t;
46 typedef uint32_t uint_least32_t;
47 typedef uint64_t uint_least64_t;
50 /* 7.18.1.3 Fastest-width integer types */
51 typedef int8_t int_fast8_t;
52 typedef int16_t int_fast16_t;
53 typedef int32_t int_fast32_t;
54 typedef int64_t int_fast64_t;
55 typedef uint8_t uint_fast8_t;
56 typedef uint16_t uint_fast16_t;
57 typedef uint32_t uint_fast32_t;
58 typedef uint64_t uint_fast64_t;
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> */
66 /* 7.18.1.5 Greatest-width integer types */
67 typedef long long intmax_t;
68 typedef unsigned long long uintmax_t;
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.)
77 #if (! defined(__cplusplus)) || defined(__STDC_LIMIT_MACROS)
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.
86 /* 7.18.2.1 Limits of exact-width integer types */
88 #define INT16_MIN -32768
89 #define INT32_MIN -2147483648
90 #define INT64_MIN -9223372036854775808LL
93 #define INT16_MAX +32767
94 #define INT32_MAX +2147483647
95 #define INT64_MAX +9223372036854775807LL
98 #define UINT16_MAX 65535
99 #define UINT32_MAX 4294967295U
100 #define UINT64_MAX 18446744073709551615ULL
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
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
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
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
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
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
134 /* 7.18.2.4 Limits of integer types capable of holding object pointers */
136 #define INTPTR_MIN INT32_MIN
137 #define INTPTR_MAX INT32_MAX
139 #define UINTPTR_MAX UINT32_MAX
141 /* 7.18.2.5 Limits of greatest-width integer types */
142 #define INTMAX_MIN INT64_MIN
143 #define INTMAX_MAX INT64_MAX
145 #define UINTMAX_MAX UINT64_MAX
148 #define PTRDIFF_MIN INT32_MIN
149 #define PTRDIFF_MAX INT32_MAX
151 /* We have no sig_atomic_t yet, so no SIG_ATOMIC_{MIN,MAX}.
152 Should end up being {-127,127} or {0,255} ... or bigger.
153 My bet would be on one of {U}INT32_{MIN,MAX}. */
155 #define SIZE_MAX UINT32_MAX
157 #define WCHAR_MAX INT32_MAX
159 /* We have no wint_t yet, so no WINT_{MIN,MAX}.
160 Should end up being {U}INT32_{MIN,MAX}, depending. */
163 #endif /* if C++, then __STDC_LIMIT_MACROS enables the above macros */
165 /* "C++ implementations should define these macros only when
166 * __STDC_CONSTANT_MACROS is defined before <stdint.h> is included."
168 #if (! defined(__cplusplus)) || defined(__STDC_CONSTANT_MACROS)
170 /* 7.18.4 Macros for integer constants */
171 #define INT8_C(v) ((int8_t)v)
172 #define INT16_C(v) ((int16_t)v)
173 #define INT32_C(v) (v ## L)
174 #define INT64_C(v) (v ## LL)
176 #define UINT8_C(v) ((uint8_t)v)
177 #define UINT16_C(v) ((uint16_t)v)
178 #define UINT32_C(v) (v ## UL)
179 #define UINT64_C(v) (v ## ULL)
181 #define INTMAX_C(v) (v ## LL)
182 #define UINTMAX_C(v) (v ## ULL)
184 #endif /* if C++, then __STDC_CONSTANT_MACROS enables the above macros */
186 #endif /* _STDINT_H_ */