1 //===-- include/Support/DataTypes.h - Define fixed size types ----*- C++ -*--=//
3 // This file contains definitions to figure out the size of _HOST_ data types.
4 // This file is important because different host OS's define different macros,
5 // which makes portability tough. This file exports the following definitions:
7 // LITTLE_ENDIAN: is #define'd if the host is little endian
8 // int64_t : is a typedef for the signed 64 bit system type
9 // uint64_t : is a typedef for the unsigned 64 bit system type
10 // INT64_MAX : is a #define specifying the max value for int64_t's
12 // No library is required when using these functinons.
14 //===----------------------------------------------------------------------===//
16 // TODO: This file sucks. Not only does it not work, but this stuff should be
17 // autoconfiscated anyways. Major FIXME
19 #ifndef LLVM_SUPPORT_DATATYPES_H
20 #define LLVM_SUPPORT_DATATYPES_H
22 #define __STDC_LIMIT_MACROS 1
30 #include <sys/types.h>
32 #define LITTLE_ENDIAN 1
39 #if !defined(BIG_ENDIAN) || !defined(INT64_MAX)
40 #error "include/Support/DataTypes.h could not determine endianness!"
44 #endif /* LLVM_SUPPORT_DATATYPES_H */