/*

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

* All rights reserved.

* This component and the accompanying materials are made available

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

* which accompanies this distribution, and is available

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

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

* FUNCTION

* <<memchr>>---find character in memory

* INDEX

* memchr

* ANSI_SYNOPSIS

* #include <string.h>

* void *memchr(const void *<[src]>, int <[c]>, size_t <[length]>);

* TRAD_SYNOPSIS

* #include <string.h>

* void *memchr(<[src]>, <[c]>, <[length]>)

* void *<[src]>;

* void *<[c]>;

* size_t <[length]>;

* This function searches memory starting at <<*<[src]>>> for the

* character <[c]>.  The search only ends with the first

* occurrence of <[c]>, or after <[length]> characters; in

* particular, <<NULL>> does not terminate the search.

* RETURNS

* If the character <[c]> is found within <[length]> characters

* of <<*<[src]>>>, a pointer to the character is returned. If

* <[c]> is not found, then <<NULL>> is returned.

* PORTABILITY

* <<memchr>>> is ANSI C.

* <<memchr>>  requires no supporting OS subroutines.

* QUICKREF

* memchr ansi pure

* 

*

*/

#include <_ansi.h>

#include <string.h>

/**

Search buffer for a character.

Searches the first num bytes of memory block pointed by src_void for character c.

@return   A pointer to the first occurrence of c in buffer.

If character is not found the function returns NULL.

@param src_void Pointer to buffer. 

@param c Key character to look for. 

@param length Number of characters to check from buffer.

*/

EXPORT_C void *

memchr (const void* src_void, int c, size_t length)

{

  const unsigned char *src = (const unsigned char *) src_void;

  while (length--)

    {

      if (*src == c)

	return (char *) src;

      src++;

    }

  return NULL;

}