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Diffstat (limited to 'REORG.TODO/string/endian.h')
| -rw-r--r-- | REORG.TODO/string/endian.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/REORG.TODO/string/endian.h b/REORG.TODO/string/endian.h new file mode 100644 index 0000000000..dcc9a65df7 --- /dev/null +++ b/REORG.TODO/string/endian.h @@ -0,0 +1,97 @@ +/* Copyright (C) 1992-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ + +#ifndef _ENDIAN_H +#define _ENDIAN_H 1 + +#include <features.h> + +/* Definitions for byte order, according to significance of bytes, + from low addresses to high addresses. The value is what you get by + putting '4' in the most significant byte, '3' in the second most + significant byte, '2' in the second least significant byte, and '1' + in the least significant byte, and then writing down one digit for + each byte, starting with the byte at the lowest address at the left, + and proceeding to the byte with the highest address at the right. */ + +#define __LITTLE_ENDIAN 1234 +#define __BIG_ENDIAN 4321 +#define __PDP_ENDIAN 3412 + +/* This file defines `__BYTE_ORDER' for the particular machine. */ +#include <bits/endian.h> + +/* Some machines may need to use a different endianness for floating point + values. */ +#ifndef __FLOAT_WORD_ORDER +# define __FLOAT_WORD_ORDER __BYTE_ORDER +#endif + +#ifdef __USE_MISC +# define LITTLE_ENDIAN __LITTLE_ENDIAN +# define BIG_ENDIAN __BIG_ENDIAN +# define PDP_ENDIAN __PDP_ENDIAN +# define BYTE_ORDER __BYTE_ORDER +#endif + +#if __BYTE_ORDER == __LITTLE_ENDIAN +# define __LONG_LONG_PAIR(HI, LO) LO, HI +#elif __BYTE_ORDER == __BIG_ENDIAN +# define __LONG_LONG_PAIR(HI, LO) HI, LO +#endif + + +#if defined __USE_MISC && !defined __ASSEMBLER__ +/* Conversion interfaces. */ +# include <bits/byteswap.h> +# include <bits/uintn-identity.h> + +# if __BYTE_ORDER == __LITTLE_ENDIAN +# define htobe16(x) __bswap_16 (x) +# define htole16(x) __uint16_identity (x) +# define be16toh(x) __bswap_16 (x) +# define le16toh(x) __uint16_identity (x) + +# define htobe32(x) __bswap_32 (x) +# define htole32(x) __uint32_identity (x) +# define be32toh(x) __bswap_32 (x) +# define le32toh(x) __uint32_identity (x) + +# define htobe64(x) __bswap_64 (x) +# define htole64(x) __uint64_identity (x) +# define be64toh(x) __bswap_64 (x) +# define le64toh(x) __uint64_identity (x) + +# else +# define htobe16(x) __uint16_identity (x) +# define htole16(x) __bswap_16 (x) +# define be16toh(x) __uint16_identity (x) +# define le16toh(x) __bswap_16 (x) + +# define htobe32(x) __uint32_identity (x) +# define htole32(x) __bswap_32 (x) +# define be32toh(x) __uint32_identity (x) +# define le32toh(x) __bswap_32 (x) + +# define htobe64(x) __uint64_identity (x) +# define htole64(x) __bswap_64 (x) +# define be64toh(x) __uint64_identity (x) +# define le64toh(x) __bswap_64 (x) +# endif +#endif + +#endif /* endian.h */ |