00001 /* 00002 * Copyright (C) 2004 by egnite Software GmbH. All rights reserved. 00003 * 00004 * Redistribution and use in source and binary forms, with or without 00005 * modification, are permitted provided that the following conditions 00006 * are met: 00007 * 00008 * 1. Redistributions of source code must retain the above copyright 00009 * notice, this list of conditions and the following disclaimer. 00010 * 2. Redistributions in binary form must reproduce the above copyright 00011 * notice, this list of conditions and the following disclaimer in the 00012 * documentation and/or other materials provided with the distribution. 00013 * 3. Neither the name of the copyright holders nor the names of 00014 * contributors may be used to endorse or promote products derived 00015 * from this software without specific prior written permission. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY EGNITE SOFTWARE GMBH AND CONTRIBUTORS 00018 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00019 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00020 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL EGNITE 00021 * SOFTWARE GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00022 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 00023 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 00024 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 00025 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 00026 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 00027 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00028 * SUCH DAMAGE. 00029 * 00030 * For additional information see http://www.ethernut.de/ 00031 * 00032 *- 00033 * Copyright (c) 1989 The Regents of the University of California. 00034 * All rights reserved. 00035 * 00036 * Redistribution and use in source and binary forms, with or without 00037 * modification, are permitted provided that the following conditions 00038 * are met: 00039 * 1. Redistributions of source code must retain the above copyright 00040 * notice, this list of conditions and the following disclaimer. 00041 * 2. Redistributions in binary form must reproduce the above copyright 00042 * notice, this list of conditions and the following disclaimer in the 00043 * documentation and/or other materials provided with the distribution. 00044 * 3. Neither the name of the University nor the names of its contributors 00045 * may be used to endorse or promote products derived from this software 00046 * without specific prior written permission. 00047 * 00048 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 00049 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00050 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 00051 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 00052 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00053 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 00054 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00055 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 00056 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 00057 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00058 * SUCH DAMAGE. 00059 */ 00060 00061 /* 00062 * $Log$ 00063 * Revision 1.3 2008/02/15 17:13:16 haraldkipp 00064 * Use configurable constant attribute. 00065 * 00066 * Revision 1.2 2006/10/08 16:48:08 haraldkipp 00067 * Documentation fixed 00068 * 00069 * Revision 1.1 2004/09/08 10:24:10 haraldkipp 00070 * Generic C string library added 00071 * 00072 */ 00073 00074 #include <compiler.h> 00075 #include <string.h> 00076 00081 00097 int strncmp(CONST char *s1, CONST char *s2, size_t n) 00098 { 00099 00100 if (n == 0) 00101 return (0); 00102 do { 00103 if (*s1 != *s2++) 00104 return (*(unsigned char *) s1 - *(unsigned char *) --s2); 00105 if (*s1++ == 0) 00106 break; 00107 } while (--n != 0); 00108 return (0); 00109 } 00110