PostgreSQL Source Code  git master
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros
wstrcmp.c
Go to the documentation of this file.
1 /*
2  * src/backend/utils/mb/wstrcmp.c
3  *
4  *-
5  * Copyright (c) 1990, 1993
6  * The Regents of the University of California. All rights reserved.
7  *
8  * This code is derived from software contributed to Berkeley by
9  * Chris Torek.
10  *
11  * Redistribution and use in source and binary forms, with or without
12  * modification, are permitted provided that the following conditions
13  * are met:
14  * 1. Redistributions of source code must retain the above copyright
15  * notice, this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright
17  * notice, this list of conditions and the following disclaimer in the
18  * documentation and/or other materials provided with the distribution.
19  * 3. Neither the name of the University nor the names of its contributors
20  * may be used to endorse or promote products derived from this software
21  * without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  */
35 /* can be used in either frontend or backend */
36 #include "postgres_fe.h"
37 
38 #include "mb/pg_wchar.h"
39 
40 int
41 pg_char_and_wchar_strcmp(const char *s1, const pg_wchar *s2)
42 {
43  while ((pg_wchar) *s1 == *s2++)
44  if (*s1++ == 0)
45  return 0;
46  return *(const unsigned char *) s1 - *(const pg_wchar *) (s2 - 1);
47 }
int pg_char_and_wchar_strcmp(const char *s1, const pg_wchar *s2)
Definition: wstrcmp.c:41
char * s1
unsigned int pg_wchar
Definition: mbprint.c:31
char * s2