endian.h (2299B) - Raw
1 /* Copyright (C) 1992-2025 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, see 16 <https://www.gnu.org/licenses/>. */ 17 18 #ifndef _ENDIAN_H 19 #define _ENDIAN_H 1 20 21 #include <features.h> 22 23 /* Get the definitions of __*_ENDIAN, __BYTE_ORDER, and __FLOAT_WORD_ORDER. */ 24 #include <bits/endian.h> 25 26 #ifdef __USE_MISC 27 # define LITTLE_ENDIAN __LITTLE_ENDIAN 28 # define BIG_ENDIAN __BIG_ENDIAN 29 # define PDP_ENDIAN __PDP_ENDIAN 30 # define BYTE_ORDER __BYTE_ORDER 31 #endif 32 33 #if defined __USE_MISC && !defined __ASSEMBLER__ 34 /* Conversion interfaces. */ 35 # include <bits/byteswap.h> 36 # include <bits/uintn-identity.h> 37 38 # if __BYTE_ORDER == __LITTLE_ENDIAN 39 # define htobe16(x) __bswap_16 (x) 40 # define htole16(x) __uint16_identity (x) 41 # define be16toh(x) __bswap_16 (x) 42 # define le16toh(x) __uint16_identity (x) 43 44 # define htobe32(x) __bswap_32 (x) 45 # define htole32(x) __uint32_identity (x) 46 # define be32toh(x) __bswap_32 (x) 47 # define le32toh(x) __uint32_identity (x) 48 49 # define htobe64(x) __bswap_64 (x) 50 # define htole64(x) __uint64_identity (x) 51 # define be64toh(x) __bswap_64 (x) 52 # define le64toh(x) __uint64_identity (x) 53 54 # else 55 # define htobe16(x) __uint16_identity (x) 56 # define htole16(x) __bswap_16 (x) 57 # define be16toh(x) __uint16_identity (x) 58 # define le16toh(x) __bswap_16 (x) 59 60 # define htobe32(x) __uint32_identity (x) 61 # define htole32(x) __bswap_32 (x) 62 # define be32toh(x) __uint32_identity (x) 63 # define le32toh(x) __bswap_32 (x) 64 65 # define htobe64(x) __uint64_identity (x) 66 # define htole64(x) __bswap_64 (x) 67 # define be64toh(x) __uint64_identity (x) 68 # define le64toh(x) __bswap_64 (x) 69 # endif 70 #endif 71 72 #endif /* endian.h */