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06e1d62689
The first rule of portability for us is 'thou shalt have no other gods before c.h', and a whole lot of these files were either not including c.h at all, or including random system headers beforehand, either of which sins can mess up largefile support nicely. Once you have included c.h, there is no need to re-include what it includes, either.
71 lines
2.4 KiB
C
71 lines
2.4 KiB
C
/*-------------------------------------------------------------------------
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*
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* memcmp.c
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* compares memory bytes
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*
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* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/port/memcmp.c,v 1.8 2005/07/28 04:03:14 tgl Exp $
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*
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* This file was taken from NetBSD and is used by SunOS because memcmp
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* on that platform does not properly compare negative bytes. The
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* NetBSD copyright terms follow.
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*/
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/*-
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Chris Torek.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include "c.h"
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/*
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* Compare memory regions.
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*/
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int
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memcmp(const void *s1, const void *s2, size_t n)
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{
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if (n != 0)
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{
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const unsigned char *p1 = s1,
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*p2 = s2;
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do
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{
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if (*p1++ != *p2++)
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return (*--p1 - *--p2);
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} while (--n != 0);
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}
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return 0;
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}
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