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//---------------------------------------------------------------------------//
// 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.
//---------------------------------------------------------------------------//
#include <iostream>
#include <boost/compute/algorithm/copy.hpp>
#include <boost/compute/algorithm/transform.hpp>
#include <boost/compute/container/vector.hpp>
#include <boost/compute/functional/operator.hpp>
namespace compute = boost::compute;
// this example demonstrates how to use Boost.Compute's STL
// implementation to add two vectors on the GPU
int main()
{
// setup input arrays
float a[] = { 1, 2, 3, 4 };
float b[] = { 5, 6, 7, 8 };
// make space for the output
float c[] = { 0, 0, 0, 0 };
// create vectors and transfer data for the input arrays 'a' and 'b'
compute::vector<float> vector_a(a, a + 4);
compute::vector<float> vector_b(b, b + 4);
// create vector for the output array
compute::vector<float> vector_c(4);
// add the vectors together
compute::transform(
vector_a.begin(),
vector_a.end(),
vector_b.begin(),
vector_c.begin(),
compute::plus<float>()
);
// transfer results back to the host array 'c'
compute::copy(vector_c.begin(), vector_c.end(), c);
// print out results in 'c'
std::cout << "c: [" << c[0] << ", "
<< c[1] << ", "
<< c[2] << ", "
<< c[3] << "]" << std::endl;
return 0;
}