Annotation of prex-old/boot/lib/string.c, Revision 1.1.1.1.2.1
1.1 nbrk 1: /*-
2: * Copyright (c) 2005, Kohsuke Ohtani
3: * All rights reserved.
4: *
5: * Redistribution and use in source and binary forms, with or without
6: * modification, are permitted provided that the following conditions
7: * are met:
8: * 1. Redistributions of source code must retain the above copyright
9: * notice, this list of conditions and the following disclaimer.
10: * 2. Redistributions in binary form must reproduce the above copyright
11: * notice, this list of conditions and the following disclaimer in the
12: * documentation and/or other materials provided with the distribution.
13: * 3. Neither the name of the author nor the names of any co-contributors
14: * may be used to endorse or promote products derived from this software
15: * without specific prior written permission.
16: *
17: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27: * SUCH DAMAGE.
28: */
29:
30: /*
31: * string.c - minimum string library
32: */
33:
34: #include <sys/types.h>
1.1.1.1.2.1! nbrk 35: #include <boot.h>
1.1 nbrk 36:
37: char *strncpy(char *dest, const char *src, size_t count)
38: {
39: char *tmp = dest;
40:
41: while (count-- && (*dest++ = *src++) != '\0');
42: return tmp;
43: }
44:
45: int strncmp(const char *src, const char *tgt, size_t count)
46: {
47: signed char res = 0;
48:
49: while (count) {
50: if ((res = *src - *tgt++) != 0 || !*src++)
51: break;
52: count--;
53: }
54: return res;
55: }
56:
57: size_t strnlen(const char *str, size_t count)
58: {
59: const char *tmp;
60:
61: for (tmp = str; count-- && *tmp != '\0'; ++tmp);
62: return (size_t)(tmp - str);
63: }
64:
65: void *memcpy(void *dest, const void *src, size_t count)
66: {
67: char *tmp = (char *)dest, *s = (char *)src;
68:
69: while (count--)
70: *tmp++ = *s++;
71: return dest;
72: }
73:
74: void *memset(void *dest, int ch, size_t count)
75: {
76: char *p = (char *)dest;
77:
78: while (count--)
79: *p++ = (char)ch;
80: return dest;
81: }
CVSweb