DataTypes.h revision cc7665f5895e1dd9682ee21d1e755d0de28c161b 
1/*===-- include/System/DataTypes.h - Define fixed size types -----*- C -*-===*\
2|*                                                                            *|
3|*                     The LLVM Compiler Infrastructure                       *|
4|*                                                                            *|
5|* This file is distributed under the University of Illinois Open Source      *|
6|* License. See LICENSE.TXT for details.                                      *|
7|*                                                                            *|
8|*===----------------------------------------------------------------------===*|
9|*                                                                            *|
10|* This file contains definitions to figure out the size of _HOST_ data types.*|
11|* This file is important because different host OS's define different macros,*|
12|* which makes portability tough.  This file exports the following            *|
13|* definitions:                                                               *|
14|*                                                                            *|
15|*   [u]int(32|64)_t : typedefs for signed and unsigned 32/64 bit system types*|
16|*   [U]INT(8|16|32|64)_(MIN|MAX) : Constants for the min and max values.     *|
17|*                                                                            *|
18|* No library is required when using these functinons.                        *|
19|*                                                                            *|
20|*===----------------------------------------------------------------------===*/
21
22/* Please leave this file C-compatible. */
23
24#ifndef SUPPORT_DATATYPES_H
25#define SUPPORT_DATATYPES_H
26
27#define HAVE_SYS_TYPES_H 1
28#define HAVE_INTTYPES_H 1
29#define HAVE_STDINT_H 1
30#define HAVE_UINT64_T 1
31/* #undef HAVE_U_INT64_T */
32
33#ifdef __cplusplus
34#include <cmath>
35#else
36#include <math.h>
37#endif
38
39/* Note that this header's correct operation depends on __STDC_LIMIT_MACROS
40   being defined.  We would define it here, but in order to prevent Bad Things
41   happening when system headers or C++ STL headers include stdint.h before we
42   define it here, we define it on the g++ command line (in Makefile.rules). */
43#if !defined(__STDC_LIMIT_MACROS)
44# error "Must #define __STDC_LIMIT_MACROS before #including System/DataTypes.h"
45#endif
46
47#if !defined(__STDC_CONSTANT_MACROS)
48# error "Must #define __STDC_CONSTANT_MACROS before " \
49        "#including System/DataTypes.h"
50#endif
51
52/* Note that <inttypes.h> includes <stdint.h>, if this is a C99 system. */
53#ifdef HAVE_SYS_TYPES_H
54#include <sys/types.h>
55#endif
56
57#ifdef HAVE_INTTYPES_H
58#include <inttypes.h>
59#endif
60
61#ifdef HAVE_STDINT_H
62#include <stdint.h>
63#endif
64
65#ifdef _AIX
66#include "llvm/System/AIXDataTypesFix.h"
67#endif
68
69/* Handle incorrect definition of uint64_t as u_int64_t */
70#ifndef HAVE_UINT64_T
71#ifdef HAVE_U_INT64_T
72typedef u_int64_t uint64_t;
73#else
74# error "Don't have a definition for uint64_t on this platform"
75#endif
76#endif
77
78#ifdef _OpenBSD_
79#define INT8_MAX 127
80#define INT8_MIN -128
81#define UINT8_MAX 255
82#define INT16_MAX 32767
83#define INT16_MIN -32768
84#define UINT16_MAX 65535
85#define INT32_MAX 2147483647
86#define INT32_MIN -2147483648
87#define UINT32_MAX 4294967295U
88#endif
89
90/* Set defaults for constants which we cannot find. */
91#if !defined(INT64_MAX)
92# define INT64_MAX 9223372036854775807LL
93#endif
94#if !defined(INT64_MIN)
95# define INT64_MIN ((-INT64_MAX)-1)
96#endif
97#if !defined(UINT64_MAX)
98# define UINT64_MAX 0xffffffffffffffffULL
99#endif
100
101#if __GNUC__ > 3
102#define END_WITH_NULL __attribute__((sentinel))
103#else
104#define END_WITH_NULL
105#endif
106
107#ifndef HUGE_VALF
108#define HUGE_VALF (float)HUGE_VAL
109#endif
110
111#endif  /* SUPPORT_DATATYPES_H */
112