1/*
2 * string.c
3 *
4 * Copyright(c) 1998 - 2009 Texas Instruments. All rights reserved.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 *  * Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 *  * Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in
15 *    the documentation and/or other materials provided with the
16 *    distribution.
17 *  * Neither the name Texas Instruments nor the names of its
18 *    contributors may be used to endorse or promote products derived
19 *    from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34
35/*
36 * src/string.c
37 *
38 */
39
40/**
41 * memcmp - Compare two areas of memory
42 * @cs: One area of memory
43 * @ct: Another area of memory
44 * @count: The size of the area.
45 */
46int memcmp(const void * cs,const void * ct, unsigned int count)
47{
48	const unsigned char *su1, *su2;
49	int res = 0;
50
51	for( su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--)
52		if ((res = *su1 - *su2) != 0)
53			break;
54	return res;
55}
56
57/**
58 * strcmp - Compare two strings
59 * @cs: One string
60 * @ct: Another string
61 */
62int strcmp(const char * cs,const char * ct)
63{
64	register signed char __res;
65
66	while (1) {
67		if ((__res = *cs - *ct++) != 0 || !*cs++)
68			break;
69	}
70
71	return __res;
72}
73