bintools/checklib/misc/endian.cpp
author jjkang
Wed, 23 Jun 2010 16:56:47 +0800
changeset 590 360bd6b35136
parent 0 044383f39525
permissions -rw-r--r--
buildrom v3.24.0, rombuild v2.17.3, rofsbuild v2.10.4, resource compiler v8.4.001, image check v1.4.0, elftools v2.3, elf2e32 v2.3

// Copyright (c) 2008-2009 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:
// Some utility functions for converting between big and little endian.
// 
//

#include "endian.h"


uint32_t misc::reverse_bytes(uint32_t n)
{
    unsigned char b0 = (n >> 0*8) & 0xff;
    unsigned char b1 = (n >> 1*8) & 0xff;
    unsigned char b2 = (n >> 2*8) & 0xff;
    unsigned char b3 = (n >> 3*8) & 0xff;

    return (b0 << 3*8) | (b1 << 2*8) | (b2 << 1*8) | (b3 << 0*8);
}

uint16_t misc::reverse_bytes(uint16_t n)
{
    unsigned char b0 = (n >> 0*8) & 0xff;
    unsigned char b1 = (n >> 1*8) & 0xff;

    return (b0 << 1*8) | (b1 << 0*8);
}