1 /*

     2 * Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

     5 * under the terms of "Eclipse Public License v1.0"

     6 * which accompanies this distribution, and is available

     7 * at the URL "http://www.eclipse.org/legal/epl-v10.html".

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:

    15 * FUNCTION

    16 * <<memcmp>>---compare two memory areas

    17 * INDEX

    18 * memcmp

    19 * ANSI_SYNOPSIS

    20 * #include <string.h>

    21 * int memcmp(const void *<[s1]>, const void *<[s2]>, size_t <[n]>);

    22 * TRAD_SYNOPSIS

    23 * #include <string.h>

    24 * int memcmp(<[s1]>, <[s2]>, <[n]>)

    25 * void *<[s1]>;

    26 * void *<[s2]>;

    27 * size_t <[n]>;

    28 * This function compares not more than <[n]> characters of the

    29 * object pointed to by <[s1]> with the object pointed to by <[s2]>.

    30 * RETURNS

    31 * The function returns an integer greater than, equal to or

    32 * less than zero 	according to whether the object pointed to by

    33 * <[s1]> is greater than, equal to or less than the object

    34 * pointed to by <[s2]>.

    35 * PORTABILITY

    36 * <<memcmp>> is ANSI C.

    37 * <<memcmp>> requires no supporting OS subroutines.

    38 * QUICKREF

    39 * memcmp ansi pure

    40 * 

    41 *

    42 */

    43 

    44 

    45 

    46 #include <string.h>

    47 /**

    48 Compare two buffers.

    49 Compares the fisrt num bytes of two memory blocks pointed by m1 and m1.

    50 @return a value indicating the relationship between the buffers

    51 @param m1 Pointer to buffer. 

    52 @param m2 Pointer to buffer. 

    53 @param n  Number of bytes to compare.

    54 */

    55 

    56 IMPORT_C signed int memcompare(const unsigned char*, signed int, const unsigned char*, signed int);

    57 

    58 

    59 EXPORT_C int

    60 memcmp (const void* m1, const void* m2, size_t n)

    61 {

    62   return memcompare((const unsigned char*)m1, n, (const unsigned char*)m2, n); 

    63 }