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Edit File: resizer.hpp

/*
 [auto_generated]
 boost/numeric/odeint/util/resizer.hpp

[begin_description]
 Implementation of the resizers.
 [end_description]

Distributed under the Boost Software License, Version 1.0.
 (See accompanying file LICENSE_1_0.txt or
 copy at http://www.boost.org/LICENSE_1_0.txt)
 */

#ifndef BOOST_NUMERIC_ODEINT_UTIL_RESIZER_HPP_INCLUDED
#define BOOST_NUMERIC_ODEINT_UTIL_RESIZER_HPP_INCLUDED

#include <boost/numeric/odeint/util/is_resizeable.hpp>
#include <boost/numeric/odeint/util/same_size.hpp>
#include <boost/numeric/odeint/util/resize.hpp>

namespace boost {
namespace numeric {
namespace odeint {

template< class ResizeWrappedState , class State >
bool adjust_size_by_resizeability( ResizeWrappedState &x , const State &y , boost::true_type )
{
    if ( !same_size( x.m_v , y ) )
    {
        resize( x.m_v , y );
        return true;
    }
    else
        return false;
}

template< class ResizeWrappedState , class State >
bool adjust_size_by_resizeability( ResizeWrappedState & /* x */ , const State & /* y */ , boost::false_type )
{
    return false;
}

struct always_resizer
{
    template< class State , class ResizeFunction >
    bool adjust_size( const State &x , ResizeFunction f )
    {
        return f( x );
    }
};

struct initially_resizer
{

bool m_initialized;

initially_resizer() : m_initialized( false )
    { }

template< class State , class ResizeFunction >
    bool adjust_size( const State &x , ResizeFunction f )
    {
        if( !m_initialized )
        {
            m_initialized = true;
            return f( x );
        } else
            return false;
    }
};

struct never_resizer
{
    template< class State , class ResizeFunction >
    bool adjust_size( const State &/*x*/ , ResizeFunction /*f*/ )
    {
        return false;
    }
};

}
}
}

#endif // BOOST_NUMERIC_ODEINT_UTIL_RESIZER_HPP_INCLUDED