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3846 mejdrech 1 
/*
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 * Copyright (c) 2009 Lukas Mejdrech
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 * All rights reserved.
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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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 *
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 * - 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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 * - 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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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup net
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 *  @{
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 */
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/** @file
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 *  Host - network byte order manipulation functions.
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 */
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#ifndef __NET_BYTEORDER_H__
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#define __NET_BYTEORDER_H__
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#include <byteorder.h>
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#include <sys/types.h>
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#ifdef ARCH_IS_BIG_ENDIAN
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// Already in the network byte order.
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    /** Converts the given short number ( 16 bit ) from the host byte order to the network byte order ( big endian ).
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     *  @param number The number in the host byte order to be converted.
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     *  @returns The number in the network byte order.
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     */
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    #define htons( number )     ( number )
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    /** Converts the given long number ( 32 bit ) from the host byte order to the network byte order ( big endian ).
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     *  @param number The number in the host byte order to be converted.
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     *  @returns The number in the network byte order.
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     */
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    #define htonl( number )     ( number )
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    /** Converts the given short number ( 16 bit ) from the network byte order ( big endian ) to the host byte order.
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     *  @param number The number in the network byte order to be converted.
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     *  @returns The number in the host byte order.
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     */
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    #define ntohs( number )     ( number )
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    /** Converts the given long number ( 32 bit ) from the network byte order ( big endian ) to the host byte order.
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     *  @param number The number in the network byte order to be converted.
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     *  @returns The number in the host byte order.
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     */
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    #define ntohl( number )     ( number )
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#else
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// Has to be swapped.
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    /** Converts the given short number ( 16 bit ) from the host byte order to the network byte order ( big endian ).
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     *  @param number The number in the host byte order to be converted.
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     *  @returns The number in the network byte order.
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     */
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    #define htons( number )     uint16_t_byteorder_swap(( uint16_t )( number ))
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    /** Converts the given long number ( 32 bit ) from the host byte order to the network byte order ( big endian ).
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     *  @param number The number in the host byte order to be converted.
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     *  @returns The number in the network byte order.
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     */
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    #define htonl( number )     uint32_t_byteorder_swap( number )
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    /** Converts the given short number ( 16 bit ) from the network byte order ( big endian ) to the host byte order.
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     *  @param number The number in the network byte order to be converted.
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     *  @returns The number in the host byte order.
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     */
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    #define ntohs( number )     uint16_t_byteorder_swap(( uint16_t )( number ))
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    /** Converts the given long number ( 32 bit ) from the network byte order ( big endian ) to the host byte order.
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     *  @param number The number in the network byte order to be converted.
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     *  @returns The number in the host byte order.
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     */
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    #define ntohl( number )     uint32_t_byteorder_swap( number )
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#endif
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#endif
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/** @}
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 */