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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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* <<strcmp>>---character string compare
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* INDEX
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* strcmp
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* ANSI_SYNOPSIS
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* #include <string.h>
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* int strcmp(const char *<[a]>, const char *<[b]>);
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* TRAD_SYNOPSIS
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* #include <string.h>
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* int strcmp(<[a]>, <[b]>)
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* char *<[a]>;
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* char *<[b]>;
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* <<strcmp>> compares the string at <[a]> to
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* the string at <[b]>.
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* RETURNS
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* If <<*<[a]>>> sorts lexicographically after <<*<[b]>>>,
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* <<strcmp>> returns a number greater than zero. If the two
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* strings match, <<strcmp>> returns zero. If <<*<[a]>>>
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* sorts lexicographically before <<*<[b]>>>, <<strcmp>> returns a
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* number less than zero.
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* PORTABILITY
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* <<strcmp>> is ANSI C.
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* <<strcmp>> requires no supporting OS subroutines.
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* QUICKREF
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* strcmp 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 strings.
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Compares string1 to s1 character by character.
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This function starts comparing the first character of each string.
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If they are equal to each other continues with the following pair
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until the characters differ or until end of string is reached.
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@return a value indicating the lexicographical relation between the strings
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@param s1 Null-terminated string to compare.
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@param s2 Null-terminated string to compare.
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*/
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EXPORT_C int
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strcmp (const char *s1, const char *s2)
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{
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const unsigned char* p1=(const unsigned char*)s1;
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const unsigned char* p2=(const unsigned char*)s2;
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for (;;)
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{
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int c1=*p1++;
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int d=c1-*p2++;
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if (d!=0)
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return d;
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if (c1==0)
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return d;
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}
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}
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/**
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Compare the wide-character string pointed to by s1 to the wide-character
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string pointed to by s2.
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@return an integer greater than, equal to, or less than zero, if the
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wide-character string pointed to by s1 is greater than, equal to,
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or less than the wide-character string pointed to by s2.
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*/
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EXPORT_C int wcscmp (const wchar_t *s1, const wchar_t *s2)
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{
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for (;;)
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{
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int c1=*s1++;
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int d=c1-*s2++;
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if (d!=0)
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return d;
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if (c1==0)
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return d;
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}
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}
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