loop2.hpp

来自「矩阵运算源码最新版本」· HPP 代码 · 共 44 行

// 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_LOOP2_INCLUDE
#define META_MATH_LOOP2_INCLUDE

// See loop3.hpp for example

namespace meta_math {

template <unsigned long Index0, unsigned long Max0, unsigned long Index1, unsigned long Max1>
struct loop2
{
    static unsigned long const index0= Index0 - 1, next_index0= Index0,
            	               index1= Index1 - 1, next_index1= Index1 + 1;
};


template <unsigned long Index0, unsigned long Max0, unsigned long Max1>
struct loop2<Index0, Max0, Max1, Max1>
{
    static unsigned long const index0= Index0 - 1, next_index0= Index0 + 1,
            	               index1= Max1 - 1, next_index1= 1;
};


template <unsigned long Max0, unsigned long Max1>
struct loop2<Max0, Max0, Max1, Max1>
{
    static unsigned long const index0= Max0 - 1,
            	               index1= Max1 - 1;
};


} // namespace meta_math

#endif // META_MATH_LOOP2_INCLUDE