author | Pat Downey <patd@symbian.org> |
Tue, 13 Jul 2010 17:51:34 +0100 | |
branch | RCL_3 |
changeset 43 | 97e3c206731f |
parent 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* FUNCTION |
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* <<memcmp>>---compare two memory areas |
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* INDEX |
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* memcmp |
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* ANSI_SYNOPSIS |
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* #include <string.h> |
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* int memcmp(const void *<[s1]>, const void *<[s2]>, size_t <[n]>); |
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* TRAD_SYNOPSIS |
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* #include <string.h> |
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* int memcmp(<[s1]>, <[s2]>, <[n]>) |
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* void *<[s1]>; |
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* void *<[s2]>; |
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* size_t <[n]>; |
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* This function compares not more than <[n]> characters of the |
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* object pointed to by <[s1]> with the object pointed to by <[s2]>. |
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* RETURNS |
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* The function returns an integer greater than, equal to or |
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* less than zero according to whether the object pointed to by |
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* <[s1]> is greater than, equal to or less than the object |
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* pointed to by <[s2]>. |
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* PORTABILITY |
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* <<memcmp>> is ANSI C. |
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* <<memcmp>> requires no supporting OS subroutines. |
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* QUICKREF |
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* memcmp ansi pure |
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* |
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* |
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*/ |
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#include <string.h> |
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/** |
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Compare two buffers. |
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Compares the fisrt num bytes of two memory blocks pointed by m1 and m1. |
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@return a value indicating the relationship between the buffers |
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@param m1 Pointer to buffer. |
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@param m2 Pointer to buffer. |
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@param n Number of bytes to compare. |
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*/ |
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IMPORT_C signed int memcompare(const unsigned char*, signed int, const unsigned char*, signed int); |
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EXPORT_C int |
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memcmp (const void* m1, const void* m2, size_t n) |
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{ |
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return memcompare((const unsigned char*)m1, n, (const unsigned char*)m2, n); |
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} |