1 //===-- include/Support/DataTypes.h - Define fixed size types ---*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file was developed by the LLVM research group and is distributed under
6 // the University of Illinois Open Source 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 #include <llvm/Config/config.h>
26 // Note that this header's correct operation depends on __STDC_LIMIT_MACROS
27 // being defined. We would define it here, but in order to prevent Bad Things
28 // happening when system headers or C++ STL headers include stdint.h before
29 // we define it here, we define it on the g++ command line (in Makefile.rules).
30 #if !defined(__STDC_LIMIT_MACROS)
31 # error "Must #define __STDC_LIMIT_MACROS before #including Support/DataTypes.h"
34 #undef HAVE_SYS_TYPES_H
35 #undef HAVE_INTTYPES_H
39 // Note that <inttypes.h> includes <stdint.h>, if this is a C99 system.
40 #ifdef HAVE_SYS_TYPES_H
41 #include <sys/types.h>
44 #ifdef HAVE_INTTYPES_H
52 // Handle incorrect definition of uint64_t as u_int64_t
55 typedef u_int64_t uint64_t;
57 # error "Don't have a definition for uint64_t on this platform"
62 // Visual C++ doesn't provide standard integer headers, but it does provide
63 // built-in data types.
64 typedef __int64 int64_t;
65 typedef unsigned __int64 uint64_t;
66 typedef signed int int32_t;
67 typedef unsigned int uint32_t;
68 typedef signed int ssize_t;
72 #define INT16_MAX 32767
73 #define INT16_MIN -32768
74 #define UINT16_MAX 65535
75 #define INT32_MAX 2147483647
76 #define INT32_MIN -2147483648
77 #define UINT32_MAX 4294967295U
80 #if !defined(INT64_MAX)
81 /* We couldn't determine INT64_MAX; default it. */
82 # define INT64_MAX 9223372036854775807LL
84 #if !defined(UINT64_MAX)
85 # define UINT64_MAX 0xffffffffffffffffULL
88 #endif /* SUPPORT_DATATYPES_H */