ceph/src/boost/libs/numeric/odeint/include/boost/numeric/odeint/util/resizer.hpp

   1 /*
   2  [auto_generated]
   3  boost/numeric/odeint/util/resizer.hpp
   4
   5  [begin_description]
   6  Implementation of the resizers.
   7  [end_description]
   8
   9  Copyright 2011-2012 Mario Mulansky
  10  Copyright 2011 Karsten Ahnert
  11
  12  Distributed under the Boost Software License, Version 1.0.
  13  (See accompanying file LICENSE_1_0.txt or
  14  copy at http://www.boost.org/LICENSE_1_0.txt)
  15  */
  16
  17
  18 #ifndef BOOST_NUMERIC_ODEINT_UTIL_RESIZER_HPP_INCLUDED
  19 #define BOOST_NUMERIC_ODEINT_UTIL_RESIZER_HPP_INCLUDED
  20
  21
  22 #include <boost/numeric/odeint/util/is_resizeable.hpp>
  23 #include <boost/numeric/odeint/util/same_size.hpp>
  24 #include <boost/numeric/odeint/util/resize.hpp>
  25
  26 namespace boost {
  27 namespace numeric {
  28 namespace odeint {
  29
  30 template< class ResizeWrappedState , class State >
  31 bool adjust_size_by_resizeability( ResizeWrappedState &x , const State &y , boost::true_type )
  32 {
  33     if ( !same_size( x.m_v , y ) )
  34     {
  35         resize( x.m_v , y );
  36         return true;
  37     }
  38     else
  39         return false;
  40 }
  41
  42 template< class ResizeWrappedState , class State >
  43 bool adjust_size_by_resizeability( ResizeWrappedState & /* x */ , const State & /* y */ , boost::false_type )
  44 {
  45     return false;
  46 }
  47
  48 struct always_resizer
  49 {
  50     template< class State , class ResizeFunction >
  51     bool adjust_size( const State &x , ResizeFunction f )
  52     {
  53         return f( x );
  54     }
  55 };
  56
  57
  58 struct initially_resizer
  59 {
  60
  61     bool m_initialized;
  62
  63     initially_resizer() : m_initialized( false )
  64     { }
  65
  66     template< class State , class ResizeFunction >
  67     bool adjust_size( const State &x , ResizeFunction f )
  68     {
  69         if( !m_initialized )
  70         {
  71             m_initialized = true;
  72             return f( x );
  73         } else
  74             return false;
  75     }
  76 };
  77
  78
  79 struct never_resizer
  80 {
  81     template< class State , class ResizeFunction >
  82     bool adjust_size( const State &/*x*/ , ResizeFunction /*f*/ )
  83     {
  84         return false;
  85     }
  86 };
  87
  88
  89 }
  90 }
  91 }
  92
  93 #endif // BOOST_NUMERIC_ODEINT_UTIL_RESIZER_HPP_INCLUDED