sysdeps/s390/strncmp.c

   1 /* Multiple versions of strncmp.
   2    Copyright (C) 2015-2023 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 #include <ifunc-strncmp.h>
  20
  21 #if HAVE_STRNCMP_IFUNC
  22 # define strncmp __redirect_strncmp
  23 /* Omit the strncmp inline definitions because it would redefine strncmp.  */
  24 # define __NO_STRING_INLINES
  25 # include <string.h>
  26 # undef strncmp
  27 # include <ifunc-resolve.h>
  28
  29 # if HAVE_STRNCMP_C
  30 extern __typeof (__redirect_strncmp) STRNCMP_C attribute_hidden;
  31 # endif
  32
  33 # if HAVE_STRNCMP_Z13
  34 extern __typeof (__redirect_strncmp) STRNCMP_Z13 attribute_hidden;
  35 # endif
  36
  37 s390_libc_ifunc_expr (__redirect_strncmp, strncmp,
  38                       (HAVE_STRNCMP_Z13 && (hwcap & HWCAP_S390_VX))
  39                       ? STRNCMP_Z13
  40                       : STRNCMP_DEFAULT
  41                       )
  42 #endif /* HAVE_STRNCMP_IFUNC  */