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/*
[auto_generated]
boost/numeric/odeint/external/thrust/thrust_operations.hpp
[begin_description]
Operations of thrust zipped iterators. Is the counterpart of the thrust_algebra.
[end_description]
Copyright 2010-2013 Mario Mulansky
Copyright 2010-2012 Karsten Ahnert
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_EXTERNAL_THRUST_THRUST_OPERATIONS_HPP_INCLUDED
#define BOOST_NUMERIC_ODEINT_EXTERNAL_THRUST_THRUST_OPERATIONS_HPP_INCLUDED
namespace boost {
namespace numeric {
namespace odeint {
#include <thrust/tuple.h>
#include <thrust/iterator/zip_iterator.h>
/**ToDo extend to scale_sum13 for rk78 */
struct thrust_operations
{
template< class Fac1 = double , class Fac2 = Fac1 >
struct scale_sum2
{
const Fac1 m_alpha1;
const Fac2 m_alpha2;
scale_sum2( const Fac1 alpha1 , const Fac2 alpha2 )
: m_alpha1( alpha1 ) , m_alpha2( alpha2 ) { }
template< class Tuple >
__host__ __device__
void operator()( Tuple t ) const
{
thrust::get<0>(t) = m_alpha1 * thrust::get<1>(t) + m_alpha2 * thrust::get<2>(t);
}
};
template< class Fac1 = double , class Fac2 = Fac1 >
struct scale_sum_swap2
{
const Fac1 m_alpha1;
const Fac2 m_alpha2;
scale_sum_swap2( const Fac1 alpha1 , const Fac2 alpha2 )
: m_alpha1( alpha1 ) , m_alpha2( alpha2 ) { }
template< class Tuple >
__host__ __device__
void operator()( Tuple t ) const
{
typename thrust::tuple_element<0,Tuple>::type tmp = thrust::get<0>(t);
thrust::get<0>(t) = m_alpha1 * thrust::get<1>(t) + m_alpha2 * thrust::get<2>(t);
thrust::get<1>(t) = tmp;
}
};
template< class Fac1 = double , class Fac2 = Fac1 , class Fac3 = Fac2 >
struct scale_sum3
{
const Fac1 m_alpha1;
const Fac2 m_alpha2;
const Fac3 m_alpha3;
scale_sum3( const Fac1 alpha1 , const Fac2 alpha2 , const Fac3 alpha3 )
: m_alpha1( alpha1 ) , m_alpha2( alpha2 ) , m_alpha3( alpha3 ) { }
template< class Tuple >
__host__ __device__
void operator()( Tuple t ) const
{
thrust::get<0>(t) = m_alpha1 * thrust::get<1>(t) +
m_alpha2 * thrust::get<2>(t) +
m_alpha3 * thrust::get<3>(t);
}
};
template< class Fac1 = double , class Fac2 = Fac1 , class Fac3 = Fac2 , class Fac4 = Fac3 >
struct scale_sum4
{
const Fac1 m_alpha1;
const Fac2 m_alpha2;
const Fac3 m_alpha3;
const Fac4 m_alpha4;
scale_sum4( const Fac1 alpha1 , const Fac2 alpha2 , const Fac3 alpha3 , const Fac4 alpha4 )
: m_alpha1( alpha1 ) , m_alpha2( alpha2 ) , m_alpha3( alpha3 ) , m_alpha4( alpha4 ){ }
template< class Tuple >
__host__ __device__
void operator()( Tuple t ) const
{
thrust::get<0>(t) = m_alpha1 * thrust::get<1>(t) +
m_alpha2 * thrust::get<2>(t) +
m_alpha3 * thrust::get<3>(t) +
m_alpha4 * thrust::get<4>(t);
}
};
template< class Fac1 = double , class Fac2 = Fac1 , class Fac3 = Fac2 ,
class Fac4 = Fac3 , class Fac5 = Fac4 >
struct scale_sum5
{
const Fac1 m_alpha1;
const Fac2 m_alpha2;
const Fac3 m_alpha3;
const Fac4 m_alpha4;
const Fac5 m_alpha5;
scale_sum5( const Fac1 alpha1 , const Fac2 alpha2 , const Fac3 alpha3 ,
const Fac4 alpha4 , const Fac5 alpha5 )
: m_alpha1( alpha1 ) , m_alpha2( alpha2 ) , m_alpha3( alpha3 ) ,
m_alpha4( alpha4 ) , m_alpha5( alpha5 ) { }
template< class Tuple >
__host__ __device__
void operator()( Tuple t ) const
{
thrust::get<0>(t) = m_alpha1 * thrust::get<1>(t) +
m_alpha2 * thrust::get<2>(t) +
m_alpha3 * thrust::get<3>(t) +
m_alpha4 * thrust::get<4>(t) +
m_alpha5 * thrust::get<5>(t);
}
};
template< class Fac1 = double , class Fac2 = Fac1 , class Fac3 = Fac2 ,
class Fac4 = Fac3 , class Fac5 = Fac4 , class Fac6 = Fac5 >
struct scale_sum6
{
const Fac1 m_alpha1;
const Fac2 m_alpha2;
const Fac3 m_alpha3;
const Fac4 m_alpha4;
const Fac5 m_alpha5;
const Fac6 m_alpha6;
scale_sum6( const Fac1 alpha1 , const Fac2 alpha2 , const Fac3 alpha3 ,
const Fac4 alpha4 , const Fac5 alpha5 , const Fac6 alpha6 )
: m_alpha1( alpha1 ) , m_alpha2( alpha2 ) , m_alpha3( alpha3 ) ,
m_alpha4( alpha4 ) , m_alpha5( alpha5 ) , m_alpha6( alpha6 ) { }
template< class Tuple >
__host__ __device__
void operator()( Tuple t ) const
{
thrust::get<0>(t) = m_alpha1 * thrust::get<1>(t) +
m_alpha2 * thrust::get<2>(t) +
m_alpha3 * thrust::get<3>(t) +
m_alpha4 * thrust::get<4>(t) +
m_alpha5 * thrust::get<5>(t) +
m_alpha6 * thrust::get<6>(t);
}
};
template< class Fac1 = double , class Fac2 = Fac1 , class Fac3 = Fac2 , class Fac4 = Fac3 ,
class Fac5 = Fac4 , class Fac6 = Fac5 , class Fac7 = Fac6 >
struct scale_sum7
{
const Fac1 m_alpha1;
const Fac2 m_alpha2;
const Fac3 m_alpha3;
const Fac4 m_alpha4;
const Fac5 m_alpha5;
const Fac6 m_alpha6;
const Fac7 m_alpha7;
scale_sum7( const Fac1 alpha1 , const Fac2 alpha2 , const Fac3 alpha3 ,
const Fac4 alpha4 , const Fac5 alpha5 , const Fac6 alpha6 , const Fac7 alpha7 )
: m_alpha1( alpha1 ) , m_alpha2( alpha2 ) , m_alpha3( alpha3 ) ,
m_alpha4( alpha4 ) , m_alpha5( alpha5 ) , m_alpha6( alpha6 ) , m_alpha7( alpha7 ) { }
template< class Tuple >
__host__ __device__
void operator()( Tuple t ) const
{
thrust::get<0>(t) = m_alpha1 * thrust::get<1>(t) +
m_alpha2 * thrust::get<2>(t) +
m_alpha3 * thrust::get<3>(t) +
m_alpha4 * thrust::get<4>(t) +
m_alpha5 * thrust::get<5>(t) +
m_alpha6 * thrust::get<6>(t) +
m_alpha7 * thrust::get<7>(t) ;
}
};
template< class Fac1 = double >
struct rel_error
{
const Fac1 m_eps_abs , m_eps_rel , m_a_x , m_a_dxdt;
rel_error( const Fac1 eps_abs , const Fac1 eps_rel , const Fac1 a_x , const Fac1 a_dxdt )
: m_eps_abs( eps_abs ) , m_eps_rel( eps_rel ) , m_a_x( a_x ) , m_a_dxdt( a_dxdt ) { }
template< class Tuple >
__host__ __device__
void operator()( Tuple t ) const
{
using std::abs;
thrust::get< 0 >( t ) = abs( thrust::get< 0 >( t ) ) /
( m_eps_abs + m_eps_rel * ( m_a_x * abs( thrust::get< 1 >( t ) + m_a_dxdt * abs( thrust::get< 2 >( t ) ) ) ) );
}
typedef void result_type;
};
};
} // odeint
} // numeric
} // boost
#endif // BOOST_NUMERIC_ODEINT_EXTERNAL_THRUST_THRUST_OPERATIONS_HPP_INCLUDED
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