diff options
Diffstat (limited to 'sysdeps/generic/strspn.c')
-rw-r--r-- | sysdeps/generic/strspn.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/sysdeps/generic/strspn.c b/sysdeps/generic/strspn.c new file mode 100644 index 0000000..89b45ad --- /dev/null +++ b/sysdeps/generic/strspn.c @@ -0,0 +1,44 @@ +/* Copyright (C) 1991 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 <ansidecl.h> +#include <string.h> + + +/* Return the length of the maximum initial segment + of S which contains only characters in ACCEPT. */ +size_t +DEFUN(strspn, (s, accept), CONST char *s AND CONST char *accept) +{ + register CONST char *p; + register CONST char *a; + register size_t count = 0; + + for (p = s; *p != '\0'; ++p) + { + for (a = accept; *a != '\0'; ++a) + if (*p == *a) + break; + if (*a == '\0') + return count; + else + ++count; + } + + return count; +} |