// Wild Magic Source Code
// David Eberly
// http://www.geometrictools.com
// Copyright (c) 1998-2008
//
// This library is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation; either version 2.1 of the License, or (at
// your option) any later version.  The license is available for reading at
// either of the locations:
//     http://www.gnu.org/copyleft/lgpl.html
//     http://www.geometrictools.com/License/WildMagicLicense.pdf
//
// Version: 4.0.0 (2006/06/28)

//----------------------------------------------------------------------------
inline bool IsPowerOfTwo (unsigned int uiValue)
{
    return (uiValue > 0) && ((uiValue & (uiValue - 1)) == 0);
}
//----------------------------------------------------------------------------
inline unsigned int Log2OfPowerOfTwo (unsigned int uiPowerOfTwo)
{
    unsigned int uiLog2 = (uiPowerOfTwo & 0xAAAAAAAA) != 0;
    uiLog2 |= ((uiPowerOfTwo & 0xFFFF0000) != 0) << 4;
    uiLog2 |= ((uiPowerOfTwo & 0xFF00FF00) != 0) << 3;
    uiLog2 |= ((uiPowerOfTwo & 0xF0F0F0F0) != 0) << 2;
    uiLog2 |= ((uiPowerOfTwo & 0xCCCCCCCC) != 0) << 1;
    return uiLog2;
}
//----------------------------------------------------------------------------
