56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
|
//---------------------------------------------------------------------------//
|
||
|
|
// Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
|
||
|
|
//
|
||
|
|
// 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_COUNT_HPP
|
||
|
|
#define BOOST_COMPUTE_ALGORITHM_COUNT_HPP
|
||
|
|
|
||
|
|
#include <boost/compute/lambda.hpp>
|
||
|
|
#include <boost/compute/system.hpp>
|
||
|
|
#include <boost/compute/command_queue.hpp>
|
||
|
|
#include <boost/compute/algorithm/count_if.hpp>
|
||
|
|
#include <boost/compute/type_traits/vector_size.hpp>
|
||
|
|
|
||
|
|
namespace boost {
|
||
|
|
namespace compute {
|
||
|
|
|
||
|
|
/// Returns the number of occurrences of \p value in the range
|
||
|
|
/// [\p first, \p last).
|
||
|
|
///
|
||
|
|
/// \see count_if()
|
||
|
|
template<class InputIterator, class T>
|
||
|
|
inline size_t count(InputIterator first,
|
||
|
|
InputIterator last,
|
||
|
|
const T &value,
|
||
|
|
command_queue &queue = system::default_queue())
|
||
|
|
{
|
||
|
|
typedef typename std::iterator_traits<InputIterator>::value_type value_type;
|
||
|
|
|
||
|
|
using ::boost::compute::_1;
|
||
|
|
using ::boost::compute::lambda::all;
|
||
|
|
|
||
|
|
if(vector_size<value_type>::value == 1){
|
||
|
|
return ::boost::compute::count_if(first,
|
||
|
|
last,
|
||
|
|
_1 == value,
|
||
|
|
queue);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
return ::boost::compute::count_if(first,
|
||
|
|
last,
|
||
|
|
all(_1 == value),
|
||
|
|
queue);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
} // end compute namespace
|
||
|
|
} // end boost namespace
|
||
|
|
|
||
|
|
#endif // BOOST_COMPUTE_ALGORITHM_COUNT_HPP
|