/usr/include/boost/compute/algorithm/detail
Edit: /usr/include/boost/compute/algorithm/detail/find_extrema.hpp (2441B)
//---------------------------------------------------------------------------//
// Copyright (c) 2013 Kyle Lutz
//
// 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
//
// See http://boostorg.github.com/compute for more information.
//---------------------------------------------------------------------------//
#ifndef BOOST_COMPUTE_ALGORITHM_DETAIL_FIND_EXTREMA_HPP
#define BOOST_COMPUTE_ALGORITHM_DETAIL_FIND_EXTREMA_HPP
#include
#include
#include
#include
#include
namespace boost {
namespace compute {
namespace detail {
template
inline InputIterator find_extrema(InputIterator first,
InputIterator last,
Compare compare,
const bool find_minimum,
command_queue &queue)
{
size_t count = iterator_range_size(first, last);
// handle trivial cases
if(count == 0 || count == 1){
return first;
}
const device &device = queue.get_device();
// CPU
if(device.type() & device::cpu) {
return find_extrema_on_cpu(first, last, compare, find_minimum, queue);
}
// GPU
// use serial method for small inputs
if(count < 512)
{
return serial_find_extrema(first, last, compare, find_minimum, queue);
}
// find_extrema_with_reduce() is used only if requirements are met
if(find_extrema_with_reduce_requirements_met(first, last, queue))
{
return find_extrema_with_reduce(first, last, compare, find_minimum, queue);
}
// use serial method for OpenCL version 1.0 due to
// problems with atomic_cmpxchg()
#ifndef BOOST_COMPUTE_CL_VERSION_1_1
return serial_find_extrema(first, last, compare, find_minimum, queue);
#endif
return find_extrema_with_atomics(first, last, compare, find_minimum, queue);
}
} // end detail namespace
} // end compute namespace
} // end boost namespace
#endif // BOOST_COMPUTE_ALGORITHM_DETAIL_FIND_EXTREMA_HPP