uintn-identity.h (1542B) - Raw
1 /* Inline functions to return unsigned integer values unchanged. 2 Copyright (C) 2017-2025 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <https://www.gnu.org/licenses/>. */ 18 19 #if !defined _NETINET_IN_H && !defined _ENDIAN_H 20 # error "Never use <bits/uintn-identity.h> directly; include <netinet/in.h> or <endian.h> instead." 21 #endif 22 23 #ifndef _BITS_UINTN_IDENTITY_H 24 #define _BITS_UINTN_IDENTITY_H 1 25 26 #include <bits/types.h> 27 28 /* These inline functions are to ensure the appropriate type 29 conversions and associated diagnostics from macros that convert to 30 a given endianness. */ 31 32 static __inline __uint16_t 33 __uint16_identity (__uint16_t __x) 34 { 35 return __x; 36 } 37 38 static __inline __uint32_t 39 __uint32_identity (__uint32_t __x) 40 { 41 return __x; 42 } 43 44 static __inline __uint64_t 45 __uint64_identity (__uint64_t __x) 46 { 47 return __x; 48 } 49 50 #endif /* _BITS_UINTN_IDENTITY_H. */