1/* Inline functions to return unsigned integer values unchanged.
2 Copyright (C) 2017-2022 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
32static __inline __uint16_t
33__uint16_identity (__uint16_t __x)
34{
35 return __x;
36}
37
38static __inline __uint32_t
39__uint32_identity (__uint32_t __x)
40{
41 return __x;
42}
43
44static __inline __uint64_t
45__uint64_identity (__uint64_t __x)
46{
47 return __x;
48}
49
50#endif /* _BITS_UINTN_IDENTITY_H. */
51

source code of include/x86_64-linux-gnu/bits/uintn-identity.h