text: /* Copyright (C) 2011-2016 Free Software Foundation, Inc.
     This file is part of the GNU C Library.
     Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
  
     The GNU C Library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Lesser General Public
     License as published by the Free Software Foundation; either
     version 2.1 of the License, or (at your option) any later version.
  
     The GNU C Library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Lesser General Public License for more details.
  
     You should have received a copy of the GNU Lesser General Public
     License along with the GNU C Library.  If not, see
     <http://www.gnu.org/licenses/>.  */
  
  #include <string.h>
  #include <stdint.h>
  #include "string-endian.h"
  
  void *
  __rawmemchr (const void *s, int c)
  {
    /* Get an aligned pointer. */
    const uintptr_t s_int = (uintptr_t) s;
    const uint64_t *p = (const uint64_t *) (s_int & -8);
  
    /* Create eight copies of the byte for which we are looking. */
    const uint64_t goal = copy_byte(c);
  
    /* Read the first word, but munge it so that bytes before the array
       will not match goal.  */
    const uint64_t before_mask = MASK (s_int);
    uint64_t v = (*p | before_mask) ^ (goal & before_mask);
  
    uint64_t bits;
    while ((bits = __insn_v1cmpeq (v, goal)) == 0)
      v = *++p;
  
    return ((char *) p) + (CFZ (bits) >> 3);
  }
  libc_hidden_def (__rawmemchr)
  weak_alias (__rawmemchr, rawmemchr)
  