uintn-identity.h 2.1 KB

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  1. //
  2. // Copyright 2026 Aarav Ravindra Kharade
  3. //
  4. // Licensed under the Apache License, Version 2.0 (the "License");
  5. // you may not use this file except in compliance with the License.
  6. // You may obtain a copy of the License at
  7. //
  8. // http://www.apache.org/licenses/LICENSE-2.0
  9. //
  10. // Unless required by applicable law or agreed to in writing, software
  11. // distributed under the License is distributed on an "AS IS" BASIS,
  12. // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13. // See the License for the specific language governing permissions and
  14. // limitations under the License.
  15. //
  16. /* Inline functions to return unsigned integer values unchanged.
  17. Copyright (C) 2017-2026 Free Software Foundation, Inc.
  18. This file is part of the GNU C Library.
  19. The GNU C Library is free software; you can redistribute it and/or
  20. modify it under the terms of the GNU Lesser General Public
  21. License as published by the Free Software Foundation; either
  22. version 2.1 of the License, or (at your option) any later version.
  23. The GNU C Library is distributed in the hope that it will be useful,
  24. but WITHOUT ANY WARRANTY; without even the implied warranty of
  25. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  26. Lesser General Public License for more details.
  27. You should have received a copy of the GNU Lesser General Public
  28. License along with the GNU C Library; if not, see
  29. <https://www.gnu.org/licenses/>. */
  30. #if !defined _NETINET_IN_H && !defined _ENDIAN_H
  31. # error "Never use <bits/uintn-identity.h> directly; include <netinet/in.h> or <endian.h> instead."
  32. #endif
  33. #ifndef _BITS_UINTN_IDENTITY_H
  34. #define _BITS_UINTN_IDENTITY_H 1
  35. #include <bits/types.h>
  36. /* These inline functions are to ensure the appropriate type
  37. conversions and associated diagnostics from macros that convert to
  38. a given endianness. */
  39. static __inline __uint16_t
  40. __uint16_identity (__uint16_t __x)
  41. {
  42. return __x;
  43. }
  44. static __inline __uint32_t
  45. __uint32_identity (__uint32_t __x)
  46. {
  47. return __x;
  48. }
  49. static __inline __uint64_t
  50. __uint64_identity (__uint64_t __x)
  51. {
  52. return __x;
  53. }
  54. #endif /* _BITS_UINTN_IDENTITY_H. */