strlen.c 1.3 KB

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  1. /* Multiple versions of strlen.
  2. Copyright (C) 2015-2026 Free Software Foundation, Inc.
  3. This file is part of the GNU C Library.
  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. The GNU C Library is distributed in the hope that it will be useful,
  9. but WITHOUT ANY WARRANTY; without even the implied warranty of
  10. MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  11. Lesser General Public License for more details.
  12. You should have received a copy of the GNU Lesser General Public
  13. License along with the GNU C Library; if not, see
  14. <https://www.gnu.org/licenses/>. */
  15. #include <ifunc-strlen.h>
  16. #if HAVE_STRLEN_IFUNC
  17. # define strlen __redirect_strlen
  18. # include <string.h>
  19. # include <ifunc-resolve.h>
  20. # undef strlen
  21. # if HAVE_STRLEN_C
  22. extern __typeof (__redirect_strlen) STRLEN_C attribute_hidden;
  23. # endif
  24. # if HAVE_STRLEN_Z13
  25. extern __typeof (__redirect_strlen) STRLEN_Z13 attribute_hidden;
  26. # endif
  27. s390_libc_ifunc_expr (__redirect_strlen, strlen,
  28. (HAVE_STRLEN_Z13 && (hwcap & HWCAP_S390_VX))
  29. ? STRLEN_Z13
  30. : STRLEN_DEFAULT
  31. )
  32. #endif