1 //===-- include/Support/DataTypes.h - Define fixed size types ---*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
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 definitions:
14 // [u]int(32|64)_t : typedefs for signed and unsigned 32/64 bit system types
15 // [U]INT(8|16|32|64)_(MIN|MAX) : Constants for the min and max values.
17 // No library is required when using these functinons.
19 //===----------------------------------------------------------------------===//
21 #ifndef SUPPORT_DATATYPES_H
22 #define SUPPORT_DATATYPES_H
24 #undef HAVE_SYS_TYPES_H
25 #undef HAVE_INTTYPES_H
38 // Note that this header's correct operation depends on __STDC_LIMIT_MACROS
39 // being defined. We would define it here, but in order to prevent Bad Things
40 // happening when system headers or C++ STL headers include stdint.h before
41 // we define it here, we define it on the g++ command line (in Makefile.rules).
42 #if !defined(__STDC_LIMIT_MACROS)
43 # error "Must #define __STDC_LIMIT_MACROS before #including Support/DataTypes.h"
46 #if !defined(__STDC_CONSTANT_MACROS)
47 # error "Must #define __STDC_CONSTANT_MACROS before " \
48 "#including Support/DataTypes.h"
51 // Note that <inttypes.h> includes <stdint.h>, if this is a C99 system.
52 #ifdef HAVE_SYS_TYPES_H
53 #include <sys/types.h>
56 #ifdef HAVE_INTTYPES_H
65 #include "llvm/Support/AIXDataTypesFix.h"
68 // Handle incorrect definition of uint64_t as u_int64_t
71 typedef u_int64_t uint64_t;
73 # error "Don't have a definition for uint64_t on this platform"
81 #define INT16_MAX 32767
82 #define INT16_MIN -32768
83 #define UINT16_MAX 65535
84 #define INT32_MAX 2147483647
85 #define INT32_MIN -2147483648
86 #define UINT32_MAX 4294967295U
90 // Visual C++ doesn't provide standard integer headers, but it does provide
91 // built-in data types.
94 #include <sys/types.h>
95 typedef __int64 int64_t;
96 typedef unsigned __int64 uint64_t;
97 typedef signed int int32_t;
98 typedef unsigned int uint32_t;
99 typedef short int16_t;
100 typedef unsigned short uint16_t;
101 typedef signed char int8_t;
102 typedef unsigned char uint8_t;
103 typedef signed int ssize_t;
105 #define INT8_MIN -128
106 #define UINT8_MAX 255
107 #define INT16_MAX 32767
108 #define INT16_MIN -32768
109 #define UINT16_MAX 65535
110 #define INT32_MAX 2147483647
111 #define INT32_MIN -2147483648
112 #define UINT32_MAX 4294967295U
116 #define UINT16_C(C) C
118 #define UINT32_C(C) C ## U
119 #define INT64_C(C) ((int64_t) C ## LL)
120 #define UINT64_C(C) ((uint64_t) C ## ULL)
121 #endif /* _MSC_VER */
123 /* Set defaults for constants which we cannot find. */
124 #if !defined(INT64_MAX)
125 # define INT64_MAX 9223372036854775807LL
127 #if !defined(INT64_MIN)
128 # define INT64_MIN ((-INT64_MAX)-1)
130 #if !defined(UINT64_MAX)
131 # define UINT64_MAX 0xffffffffffffffffULL
135 #define END_WITH_NULL __attribute__((sentinel))
137 #define END_WITH_NULL
141 #define HUGE_VALF (float)HUGE_VAL
144 #endif /* SUPPORT_DATATYPES_H */