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TestCXX11Deduction.hpp
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rLAMMPS lammps
TestCXX11Deduction.hpp
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/*
//@HEADER
// ************************************************************************
//
// Kokkos v. 2.0
// Copyright (2014) Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
// the U.S. Government retains certain rights in this software.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
//
// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
// PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SANDIA CORPORATION OR THE
// CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
// EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
// PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
// NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Questions? Contact H. Carter Edwards (hcedwar@sandia.gov)
//
// ************************************************************************
//@HEADER
*/
#include <Kokkos_Core.hpp>
#ifndef TESTCXX11DEDUCTION_HPP
#define TESTCXX11DEDUCTION_HPP
namespace
TestCXX11
{
struct
TestReductionDeductionTagA
{};
struct
TestReductionDeductionTagB
{};
template
<
class
ExecSpace
>
struct
TestReductionDeductionFunctor
{
// KOKKOS_INLINE_FUNCTION
// void operator()( long i , long & value ) const
// { value += i + 1 ; }
KOKKOS_INLINE_FUNCTION
void
operator
()(
TestReductionDeductionTagA
,
long
i
,
long
&
value
)
const
{
value
+=
(
2
*
i
+
1
)
+
(
2
*
i
+
2
);
}
KOKKOS_INLINE_FUNCTION
void
operator
()(
const
TestReductionDeductionTagB
&
,
const
long
i
,
long
&
value
)
const
{
value
+=
(
3
*
i
+
1
)
+
(
3
*
i
+
2
)
+
(
3
*
i
+
3
)
;
}
};
template
<
class
ExecSpace
>
void
test_reduction_deduction
()
{
typedef
TestReductionDeductionFunctor
<
ExecSpace
>
Functor
;
const
long
N
=
50
;
// const long answer = N % 2 ? ( N * ((N+1)/2 )) : ( (N/2) * (N+1) );
const
long
answerA
=
N
%
2
?
(
(
2
*
N
)
*
(((
2
*
N
)
+
1
)
/
2
))
:
(
((
2
*
N
)
/
2
)
*
((
2
*
N
)
+
1
)
);
const
long
answerB
=
N
%
2
?
(
(
3
*
N
)
*
(((
3
*
N
)
+
1
)
/
2
))
:
(
((
3
*
N
)
/
2
)
*
((
3
*
N
)
+
1
)
);
long
result
=
0
;
// Kokkos::parallel_reduce( Kokkos::RangePolicy<ExecSpace>(0,N) , Functor() , result );
// ASSERT_EQ( answer , result );
Kokkos
::
parallel_reduce
(
Kokkos
::
RangePolicy
<
ExecSpace
,
TestReductionDeductionTagA
>
(
0
,
N
)
,
Functor
()
,
result
);
ASSERT_EQ
(
answerA
,
result
);
Kokkos
::
parallel_reduce
(
Kokkos
::
RangePolicy
<
ExecSpace
,
TestReductionDeductionTagB
>
(
0
,
N
)
,
Functor
()
,
result
);
ASSERT_EQ
(
answerB
,
result
);
}
}
#endif
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