stdint.h revision 40e60c27d09d0561cd3ab41c332e3b0838e899dd 
1/*===---- stdint.h - Standard header for sized integer types --------------===*\
2 *
3 * Copyright (c) 2009 Chris Lattner
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a copy
6 * of this software and associated documentation files (the "Software"), to deal
7 * in the Software without restriction, including without limitation the rights
8 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
9 * copies of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in
13 * all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
21 * THE SOFTWARE.
22 *
23\*===----------------------------------------------------------------------===*/
24
25#ifndef __STDINT_H
26#define __STDINT_H
27
28/* We currently only support targets with power of two, 2s complement integers.
29 */
30
31/* C99 7.18.1.1 Exact-width integer types.
32 * C99 7.18.1.2 Minimum-width integer types.
33 * C99 7.18.1.3 Fastest minimum-width integer types.
34 * Since we only support pow-2 targets, these map directly to exact width types.
35 */
36
37typedef signed __INT8_TYPE__ int8_t;
38typedef unsigned __INT8_TYPE__ uint8_t;
39typedef int8_t     int_least8_t;
40typedef uint8_t   uint_least8_t;
41typedef int8_t     int_fast8_t;
42typedef uint8_t   uint_fast8_t;
43
44typedef __INT16_TYPE__ int16_t;
45typedef unsigned __INT16_TYPE__ uint16_t;
46typedef int16_t   int_least16_t;
47typedef uint16_t uint_least16_t;
48typedef int16_t   int_fast16_t;
49typedef uint16_t uint_fast16_t;
50
51typedef __INT32_TYPE__ int32_t;
52typedef unsigned __INT32_TYPE__ uint32_t;
53typedef int32_t   int_least32_t;
54typedef uint32_t uint_least32_t;
55typedef int32_t   int_fast32_t;
56typedef uint32_t uint_fast32_t;
57
58/* Some 16-bit targets do not have a 64-bit datatype.  Only define the 64-bit
59 * typedefs if there is something to typedef them to.
60 */
61#ifdef __INT64_TYPE__
62typedef __INT64_TYPE__ int64_t;
63typedef unsigned __INT64_TYPE__ uint64_t;
64typedef int64_t   int_least64_t;
65typedef uint64_t uint_least64_t;
66typedef int64_t   int_fast64_t;
67typedef uint64_t uint_fast64_t;
68#endif
69
70
71/* C99 7.18.1.4 Integer types capable of holding object pointers.
72 */
73#ifndef __intptr_t_defined
74typedef __INTPTR_TYPE__          intptr_t;
75typedef unsigned __INTPTR_TYPE__ uintptr_t;
76#define __intptr_t_defined
77#endif
78
79/* C99 7.18.1.5 Greatest-width integer types.
80 */
81typedef __INTMAX_TYPE__   intmax_t;
82typedef __UINTMAX_TYPE__ uintmax_t;
83
84/* C99 7.18.2.1 Limits of exact-width integer types.
85 * Fixed sized values have fixed size max/min.
86 * C99 7.18.2.2 Limits of minimum-width integer types.
87 * Since we map these directly onto fixed-sized types, these values the same.
88 * C99 7.18.2.3 Limits of fastest minimum-width integer types.
89 *
90 * Note that C++ should not check __STDC_LIMIT_MACROS here, contrary to the
91 * claims of the C standard (see C++ 18.3.1p2, [cstdint.syn]).
92 */
93
94#define INT8_MAX    127
95#define INT8_MIN  (-128)
96#define UINT8_MAX   255
97#define INT_LEAST8_MIN   INT8_MIN
98#define INT_LEAST8_MAX   INT8_MAX
99#define UINT_LEAST8_MAX UINT8_MAX
100#define INT_FAST8_MIN    INT8_MIN
101#define INT_FAST8_MAX    INT8_MAX
102#define UINT_FAST8_MAX  UINT8_MAX
103
104#define INT16_MAX    32767
105#define INT16_MIN  (-32768)
106#define UINT16_MAX   65535
107#define INT_LEAST16_MIN   INT16_MIN
108#define INT_LEAST16_MAX   INT16_MAX
109#define UINT_LEAST16_MAX UINT16_MAX
110#define INT_FAST16_MIN    INT16_MIN
111#define INT_FAST16_MAX    INT16_MAX
112#define UINT_FAST16_MAX  UINT16_MAX
113
114#define INT32_MAX         2147483647
115#define INT32_MIN        (-2147483647-1)
116#define UINT32_MAX        4294967295U
117#define INT_LEAST32_MIN  INT32_MIN
118#define INT_LEAST32_MAX  INT32_MAX
119#define UINT_LEAST32_MAX UINT32_MAX
120#define INT_FAST32_MIN   INT32_MIN
121#define INT_FAST32_MAX   INT32_MAX
122#define UINT_FAST32_MAX  UINT32_MAX
123
124/* If we do not have 64-bit support, don't define the 64-bit size macros. */
125#ifndef __INT64_TYPE__
126#define INT64_MAX      9223372036854775807LL
127#define INT64_MIN    (-9223372036854775807LL-1)
128#define UINT64_MAX    18446744073709551615ULL
129#define INT_LEAST64_MIN  INT64_MIN
130#define INT_LEAST64_MAX  INT64_MAX
131#define UINT_LEAST64_MAX UINT64_MAX
132#define INT_FAST64_MIN    INT64_MIN
133#define INT_FAST64_MAX    INT64_MAX
134#define UINT_FAST64_MAX  UINT64_MAX
135#endif
136
137/* C99 7.18.2.4 Limits of integer types capable of holding object pointers. */
138/* C99 7.18.3 Limits of other integer types. */
139
140#if __POINTER_WIDTH__ == 64
141
142#define  INTPTR_MIN  INT64_MIN
143#define  INTPTR_MAX  INT64_MAX
144#define UINTPTR_MAX UINT64_MAX
145#define PTRDIFF_MIN  INT64_MIN
146#define PTRDIFF_MAX  INT64_MAX
147#define SIZE_MAX    UINT64_MAX
148
149#elif __POINTER_WIDTH__ == 32
150
151#define  INTPTR_MIN  INT32_MIN
152#define  INTPTR_MAX  INT32_MAX
153#define UINTPTR_MAX UINT32_MAX
154#define PTRDIFF_MIN  INT32_MIN
155#define PTRDIFF_MAX  INT32_MAX
156#define SIZE_MAX    UINT32_MAX
157
158#elif __POINTER_WIDTH__ == 16
159
160#define  INTPTR_MIN  INT16_MIN
161#define  INTPTR_MAX  INT16_MAX
162#define UINTPTR_MAX UINT16_MAX
163#define PTRDIFF_MIN  INT16_MIN
164#define PTRDIFF_MAX  INT16_MAX
165#define SIZE_MAX    UINT16_MAX
166
167#else
168#error "unknown or unset pointer width!"
169#endif
170
171/* C99 7.18.2.5 Limits of greatest-width integer types. */
172#define INTMAX_MIN  (-__INTMAX_MAX__-1)
173#define INTMAX_MAX   __INTMAX_MAX__
174#define UINTMAX_MAX (__INTMAX_MAX__*2ULL+1ULL)
175
176/* C99 7.18.3 Limits of other integer types. */
177#define SIG_ATOMIC_MIN INT32_MIN
178#define SIG_ATOMIC_MAX INT32_MAX
179#define WINT_MIN       INT32_MIN
180#define WINT_MAX       INT32_MAX
181
182/* FIXME: if we ever support a target with unsigned wchar_t, this should be
183 * 0 .. Max.
184 */
185#ifndef WCHAR_MAX
186#define WCHAR_MAX __WCHAR_MAX__
187#endif
188#ifndef WCHAR_MIN
189#define WCHAR_MIN (-__WCHAR_MAX__-1)
190#endif
191
192/* C99 7.18.4 Macros for minimum-width integer constants.
193 *
194 * Note that C++ should not check __STDC_CONSTANT_MACROS here, contrary to the
195 * claims of the C standard (see C++ 18.3.1p2, [cstdint.syn]).
196 */
197
198#define INT8_C(v)   (v)
199#define UINT8_C(v)  (v##U)
200#define INT16_C(v)  (v)
201#define UINT16_C(v) (v##U)
202#define INT32_C(v)  (v)
203#define UINT32_C(v) (v##U)
204
205/* Only define the 64-bit size macros if we have 64-bit support. */
206#ifdef __INT64_TYPE__
207#define INT64_C(v)  (v##LL)
208#define UINT64_C(v) (v##ULL)
209#endif
210
211/* 7.18.4.2 Macros for greatest-width integer constants. */
212#define INTMAX_C(v)  (v##LL)
213#define UINTMAX_C(v) (v##ULL)
214
215#endif /* __STDINT_H */
216