glibc/sysdeps/generic/strcspn.c
1995-02-18 01:27:10 +00:00

39 lines
1.2 KiB
C

/* Copyright (C) 1991, 1994 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., 675 Mass Ave,
Cambridge, MA 02139, USA. */
#include <string.h>
/* Return the length of the maximum inital 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;
}