1 /* Copyright (C) 1991 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If
16 not, write to the Free Software Foundation, Inc., 675 Mass Ave,
17 Cambridge, MA 02139, USA. */
23 /* Compare no more than N characters of S1 and S2,
24 returning less than, equal to or greater than zero
25 if S1 is lexiographically less than, equal to or
28 DEFUN(strncmp
, (s1
, s2
, n
),
29 CONST
char *s1 AND CONST
char *s2 AND
size_t n
)
31 unsigned reg_char c1
= '\0';
32 unsigned reg_char c2
= '\0';
39 c1
= (unsigned char) *s1
++;
40 c2
= (unsigned char) *s2
++;
41 if (c1
== '\0' || c1
!= c2
)
43 c1
= (unsigned char) *s1
++;
44 c2
= (unsigned char) *s2
++;
45 if (c1
== '\0' || c1
!= c2
)
47 c1
= (unsigned char) *s1
++;
48 c2
= (unsigned char) *s2
++;
49 if (c1
== '\0' || c1
!= c2
)
51 c1
= (unsigned char) *s1
++;
52 c2
= (unsigned char) *s2
++;
53 if (c1
== '\0' || c1
!= c2
)
61 c1
= (unsigned char) *s1
++;
62 c2
= (unsigned char) *s2
++;
63 if (c1
== '\0' || c1
!= c2
)