wstrncmp.c
上传用户:blenddy
上传日期:2007-01-07
资源大小:6495k
文件大小:3k
- /*
- * Copyright (c) 1989, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * This code is derived from FreeBSD 2.2.1-RELEASE software.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
- #include "mb/pg_wchar.h"
- int
- pg_wchar_strncmp(s1, s2, n)
- register const pg_wchar *s1,
- *s2;
- register size_t n;
- {
- if (n == 0)
- return 0;
- do
- {
- if (*s1 != *s2++)
- return (*(const pg_wchar *) s1 -
- *(const pg_wchar *) (s2 - 1));
- if (*s1++ == 0)
- break;
- } while (--n != 0);
- return 0;
- }
- int
- pg_char_and_wchar_strncmp(s1, s2, n)
- register const char *s1;
- register const pg_wchar *s2;
- register size_t n;
- {
- if (n == 0)
- return 0;
- do
- {
- if ((pg_wchar) * s1 != *s2++)
- return (*(const pg_wchar *) s1 -
- *(const pg_wchar *) (s2 - 1));
- if (*s1++ == 0)
- break;
- } while (--n != 0);
- return 0;
- }
- size_t
- pg_wchar_strlen(str)
- const pg_wchar *str;
- {
- register const pg_wchar *s;
- for (s = str; *s; ++s);
- return (s - str);
- }