| 1 | /* |
|---|
| 2 | * Copyright (c) 1997 |
|---|
| 3 | * Silicon Graphics Computer Systems, Inc. |
|---|
| 4 | * |
|---|
| 5 | * Permission to use, copy, modify, distribute and sell this software |
|---|
| 6 | * and its documentation for any purpose is hereby granted without fee, |
|---|
| 7 | * provided that the above copyright notice appear in all copies and |
|---|
| 8 | * that both that copyright notice and this permission notice appear |
|---|
| 9 | * in supporting documentation. Silicon Graphics makes no |
|---|
| 10 | * representations about the suitability of this software for any |
|---|
| 11 | * purpose. It is provided "as is" without express or implied warranty. |
|---|
| 12 | */ |
|---|
| 13 | |
|---|
| 14 | /* |
|---|
| 15 | * Copyright notice reproduced from <boost/detail/limits.hpp>, from |
|---|
| 16 | * which this code was originally taken. |
|---|
| 17 | * |
|---|
| 18 | * Modified by Caleb Epstein to use <endian.h> with GNU libc and to |
|---|
| 19 | * defined the BOOST_ENDIAN macro. |
|---|
| 20 | */ |
|---|
| 21 | |
|---|
| 22 | #ifndef BOOST_DETAIL_ENDIAN_HPP |
|---|
| 23 | #define BOOST_DETAIL_ENDIAN_HPP |
|---|
| 24 | |
|---|
| 25 | // GNU libc offers the helpful header <endian.h> which defines |
|---|
| 26 | // __BYTE_ORDER |
|---|
| 27 | |
|---|
| 28 | #if defined (__GLIBC__) |
|---|
| 29 | # include <endian.h> |
|---|
| 30 | # if (__BYTE_ORDER == __LITTLE_ENDIAN) |
|---|
| 31 | # define BOOST_LITTLE_ENDIAN |
|---|
| 32 | # elif (__BYTE_ORDER == __BIG_ENDIAN) |
|---|
| 33 | # define BOOST_BIG_ENDIAN |
|---|
| 34 | # elif (__BYTE_ORDER == __PDP_ENDIAN) |
|---|
| 35 | # define BOOST_PDP_ENDIAN |
|---|
| 36 | # else |
|---|
| 37 | # error Unknown machine endianness detected. |
|---|
| 38 | # endif |
|---|
| 39 | # define BOOST_BYTE_ORDER __BYTE_ORDER |
|---|
| 40 | #elif defined(__sparc) || defined(__sparc__) \ |
|---|
| 41 | || defined(_POWER) || defined(__powerpc__) \ |
|---|
| 42 | || defined(__ppc__) || defined(__hppa) \ |
|---|
| 43 | || defined(_MIPSEB) || defined(_POWER) \ |
|---|
| 44 | || defined(__s390__) |
|---|
| 45 | # define BOOST_BIG_ENDIAN |
|---|
| 46 | # define BOOST_BYTE_ORDER 4321 |
|---|
| 47 | #elif defined(__i386__) || defined(__alpha__) \ |
|---|
| 48 | || defined(__ia64) || defined(__ia64__) \ |
|---|
| 49 | || defined(_M_IX86) || defined(_M_IA64) \ |
|---|
| 50 | || defined(_M_ALPHA) |
|---|
| 51 | # define BOOST_LITTLE_ENDIAN |
|---|
| 52 | # define BOOST_BYTE_ORDER 1234 |
|---|
| 53 | #else |
|---|
| 54 | # error The file boost/detail/endian.hpp needs to be set up for your CPU type. |
|---|
| 55 | #endif |
|---|
| 56 | |
|---|
| 57 | |
|---|
| 58 | #endif |
|---|
