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TestCXX11Deduction.hpp
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TestCXX11Deduction.hpp
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/*
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// ************************************************************************
//
// 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.
//
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// modification, are permitted provided that the following conditions are
// met:
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// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
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// 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.
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// 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
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// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Questions? Contact H. Carter Edwards (hcedwar@sandia.gov)
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#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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