| /*-----------------------------------------------------------------------------+ |
| Author: Joachim Faulhaber |
| Copyright (c) 2009-2009: Joachim Faulhaber |
| +------------------------------------------------------------------------------+ |
| Distributed under the Boost Software License, Version 1.0. |
| (See accompanying file LICENCE.txt or copy at |
| http://www.boost.org/LICENSE_1_0.txt) |
| +-----------------------------------------------------------------------------*/ |
| |
| namespace mini // minimal implementations for example projects |
| { |
| // A meta implementation of an the logarithm function on integrals |
| template <size_t Argument, size_t Base=2> |
| struct log_{ enum { value = 1 + log_<Argument/Base, Base>::value }; }; |
| |
| template <size_t Base>struct log_<1, Base>{ enum { value = 0 }; }; |
| template <size_t Base>struct log_<0, Base>{ enum { value = 0 }; }; |
| |
| template <size_t Argument> |
| struct log2_{ enum { value = log_<Argument, 2>::value }; }; |
| |
| template <size_t Argument> |
| struct power2_{ enum { value = 1 << Argument }; }; |
| |
| } // namespace mini |
| |
