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/* Copyright (C) 1991, 1994, 1996 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#include <string.h>

/* Return the length of the maximum initial segment of S
   which contains no characters from REJECT.  */
size_t
strcspn (s, reject)
     register const char *s;
     register const char *reject;
{
  register size_t count = 0;

  while (*s != '\0')
    if (strchr (reject, *s++) == NULL)
      ++count;
    else
      return count;

  return count;
}