least_significant_one_bit.hpp

矩阵运算源码最新版本

// Software License for MTL
// 
// Copyright (c) 2007 The Trustees of Indiana University. All rights reserved.
// Authors: Peter Gottschling and Andrew Lumsdaine
// 
// This file is part of the Matrix Template Library
// 
// See also license.mtl.txt in the distribution.

#ifndef META_MATH_LEAST_SIGNIFICANT_ONE_BIT_INCLUDE
#define META_MATH_LEAST_SIGNIFICANT_ONE_BIT_INCLUDE

namespace meta_math {

template <unsigned long X>
struct least_significant_one_bit
{
  static const unsigned long value= (X ^ X-1) + 1 >> 1;
};


} // namespace meta_math

#endif // META_MATH_LEAST_SIGNIFICANT_ONE_BIT_INCLUDE