/usr/include/thrust/detail/function.h is in libthrust-dev 1.6.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright 2008-2012 NVIDIA Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <thrust/detail/config.h>
#include <thrust/detail/raw_reference_cast.h>
namespace thrust
{
namespace detail
{
template<typename Function, typename Result>
struct host_function
{
// mutable because Function::operator() might be const
mutable Function m_f;
inline host_function()
: m_f()
{}
inline host_function(const Function &f)
: m_f(f)
{}
template<typename Argument>
inline Result operator()(Argument &x) const
{
// we static cast to Result to handle void Result without error
// in case Function's result is non-void
return static_cast<Result>(m_f(thrust::raw_reference_cast(x)));
}
template<typename Argument>
inline Result operator()(const Argument &x) const
{
// we static cast to Result to handle void Result without error
// in case Function's result is non-void
return static_cast<Result>(m_f(thrust::raw_reference_cast(x)));
}
template<typename Argument1, typename Argument2>
inline Result operator()(Argument1 &x, Argument2 &y) const
{
// we static cast to Result to handle void Result without error
// in case Function's result is non-void
return static_cast<Result>(m_f(thrust::raw_reference_cast(x), thrust::raw_reference_cast(y)));
}
template<typename Argument1, typename Argument2>
inline Result operator()(const Argument1 &x, Argument2 &y) const
{
// we static cast to Result to handle void Result without error
// in case Function's result is non-void
return static_cast<Result>(m_f(thrust::raw_reference_cast(x), thrust::raw_reference_cast(y)));
}
template<typename Argument1, typename Argument2>
inline Result operator()(const Argument1 &x, const Argument2 &y) const
{
// we static cast to Result to handle void Result without error
// in case Function's result is non-void
return static_cast<Result>(m_f(thrust::raw_reference_cast(x), thrust::raw_reference_cast(y)));
}
template<typename Argument1, typename Argument2>
inline Result operator()(Argument1 &x, const Argument2 &y) const
{
// we static cast to Result to handle void Result without error
// in case Function's result is non-void
return static_cast<Result>(m_f(thrust::raw_reference_cast(x), thrust::raw_reference_cast(y)));
}
}; // end host_function
template<typename Function, typename Result>
struct device_function
{
// mutable because Function::operator() might be const
mutable Function m_f;
inline __device__ device_function()
: m_f()
{}
inline __device__ device_function(const Function &f)
: m_f(f)
{}
template<typename Argument>
inline __device__ Result operator()(Argument &x) const
{
// we static cast to Result to handle void Result without error
// in case Function's result is non-void
return static_cast<Result>(m_f(thrust::raw_reference_cast(x)));
}
template<typename Argument>
inline __device__ Result operator()(const Argument &x) const
{
// we static cast to Result to handle void Result without error
// in case Function's result is non-void
return static_cast<Result>(m_f(thrust::raw_reference_cast(x)));
}
template<typename Argument1, typename Argument2>
inline __device__ Result operator()(Argument1 &x, Argument2 &y) const
{
// we static cast to Result to handle void Result without error
// in case Function's result is non-void
return static_cast<Result>(m_f(thrust::raw_reference_cast(x), thrust::raw_reference_cast(y)));
}
template<typename Argument1, typename Argument2>
inline __device__ Result operator()(const Argument1 &x, Argument2 &y) const
{
// we static cast to Result to handle void Result without error
// in case Function's result is non-void
return static_cast<Result>(m_f(thrust::raw_reference_cast(x), thrust::raw_reference_cast(y)));
}
template<typename Argument1, typename Argument2>
inline __device__ Result operator()(const Argument1 &x, const Argument2 &y) const
{
// we static cast to Result to handle void Result without error
// in case Function's result is non-void
return static_cast<Result>(m_f(thrust::raw_reference_cast(x), thrust::raw_reference_cast(y)));
}
template<typename Argument1, typename Argument2>
inline __device__ Result operator()(Argument1 &x, const Argument2 &y) const
{
// we static cast to Result to handle void Result without error
// in case Function's result is non-void
return static_cast<Result>(m_f(thrust::raw_reference_cast(x), thrust::raw_reference_cast(y)));
}
}; // end device_function
template<typename Function, typename Result>
struct host_device_function
{
// mutable because Function::operator() might be const
mutable Function m_f;
inline __host__ __device__
host_device_function()
: m_f()
{}
inline __host__ __device__
host_device_function(const Function &f)
: m_f(f)
{}
template<typename Argument>
inline __host__ __device__
Result operator()(Argument &x) const
{
// we static cast to Result to handle void Result without error
// in case Function's result is non-void
return static_cast<Result>(m_f(thrust::raw_reference_cast(x)));
}
template<typename Argument>
inline __host__ __device__ Result operator()(const Argument &x) const
{
// we static cast to Result to handle void Result without error
// in case Function's result is non-void
return static_cast<Result>(m_f(thrust::raw_reference_cast(x)));
}
template<typename Argument1, typename Argument2>
inline __host__ __device__ Result operator()(Argument1 &x, Argument2 &y) const
{
// we static cast to Result to handle void Result without error
// in case Function's result is non-void
return static_cast<Result>(m_f(thrust::raw_reference_cast(x), thrust::raw_reference_cast(y)));
}
template<typename Argument1, typename Argument2>
inline __host__ __device__ Result operator()(const Argument1 &x, Argument2 &y) const
{
// we static cast to Result to handle void Result without error
// in case Function's result is non-void
return static_cast<Result>(m_f(thrust::raw_reference_cast(x), thrust::raw_reference_cast(y)));
}
template<typename Argument1, typename Argument2>
inline __host__ __device__ Result operator()(const Argument1 &x, const Argument2 &y) const
{
// we static cast to Result to handle void Result without error
// in case Function's result is non-void
return static_cast<Result>(m_f(thrust::raw_reference_cast(x), thrust::raw_reference_cast(y)));
}
template<typename Argument1, typename Argument2>
inline __host__ __device__ Result operator()(Argument1 &x, const Argument2 &y) const
{
// we static cast to Result to handle void Result without error
// in case Function's result is non-void
return static_cast<Result>(m_f(thrust::raw_reference_cast(x), thrust::raw_reference_cast(y)));
}
}; // end host_device_function
} // end detail
} // end thrust
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