thrust/functional.h

File members: thrust/functional.h

/*
 *  Copyright 2008-2018 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>

#if defined(_CCCL_IMPLICIT_SYSTEM_HEADER_GCC)
#  pragma GCC system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_CLANG)
#  pragma clang system_header
#elif defined(_CCCL_IMPLICIT_SYSTEM_HEADER_MSVC)
#  pragma system_header
#endif // no system header

#include <thrust/detail/functional/actor.h>

#include <cuda/functional>
#include <cuda/std/functional>

THRUST_NAMESPACE_BEGIN

using ::cuda::std::divides;
using ::cuda::std::minus;
using ::cuda::std::modulus;
using ::cuda::std::multiplies;
using ::cuda::std::negate;
using ::cuda::std::plus;

template <typename T = void>
struct square
{
  _CCCL_EXEC_CHECK_DISABLE
  _CCCL_HOST_DEVICE constexpr T operator()(const T& x) const
  {
    return x * x;
  }
};

template <>
struct square<void>
{
  using is_transparent = void;

  _CCCL_EXEC_CHECK_DISABLE
  template <typename T>
  _CCCL_HOST_DEVICE constexpr T operator()(const T& x) const noexcept(noexcept(x * x))
  {
    return x * x;
  }
};

using ::cuda::std::equal_to;
using ::cuda::std::greater;
using ::cuda::std::greater_equal;
using ::cuda::std::less;
using ::cuda::std::less_equal;
using ::cuda::std::not_equal_to;

using ::cuda::std::logical_and;
using ::cuda::std::logical_not;
using ::cuda::std::logical_or;

using ::cuda::std::bit_and;
using ::cuda::std::bit_or;
using ::cuda::std::bit_xor;

using ::cuda::maximum;
using ::cuda::minimum;

template <typename T1 = void, typename T2 = void>
struct project1st
{
  _CCCL_HOST_DEVICE constexpr const T1& operator()(const T1& lhs, const T2& /*rhs*/) const
  {
    return lhs;
  }
};

template <>
struct project1st<void, void>
{
  using is_transparent = void;
  _CCCL_EXEC_CHECK_DISABLE
  template <typename T1, typename T2>
  _CCCL_HOST_DEVICE constexpr auto operator()(T1&& t1, T2&&) const noexcept(noexcept(THRUST_FWD(t1)))
    -> decltype(THRUST_FWD(t1))
  {
    return THRUST_FWD(t1);
  }
};

template <typename T1 = void, typename T2 = void>
struct project2nd
{
  _CCCL_HOST_DEVICE constexpr const T2& operator()(const T1& /*lhs*/, const T2& rhs) const
  {
    return rhs;
  }
}; // end project2nd

template <>
struct project2nd<void, void>
{
  using is_transparent = void;
  _CCCL_EXEC_CHECK_DISABLE
  template <typename T1, typename T2>
  _CCCL_HOST_DEVICE constexpr auto operator()(T1&&, T2&& t2) const noexcept(noexcept(THRUST_FWD(t2)))
    -> decltype(THRUST_FWD(t2))
  {
    return THRUST_FWD(t2);
  }
};

// odds and ends

using ::cuda::std::not_fn;

namespace placeholders
{

_CCCL_GLOBAL_CONSTANT thrust::detail::functional::placeholder<0>::type _1;

_CCCL_GLOBAL_CONSTANT thrust::detail::functional::placeholder<1>::type _2;

_CCCL_GLOBAL_CONSTANT thrust::detail::functional::placeholder<2>::type _3;

_CCCL_GLOBAL_CONSTANT thrust::detail::functional::placeholder<3>::type _4;

_CCCL_GLOBAL_CONSTANT thrust::detail::functional::placeholder<4>::type _5;

_CCCL_GLOBAL_CONSTANT thrust::detail::functional::placeholder<5>::type _6;

_CCCL_GLOBAL_CONSTANT thrust::detail::functional::placeholder<6>::type _7;

_CCCL_GLOBAL_CONSTANT thrust::detail::functional::placeholder<7>::type _8;

_CCCL_GLOBAL_CONSTANT thrust::detail::functional::placeholder<8>::type _9;

_CCCL_GLOBAL_CONSTANT thrust::detail::functional::placeholder<9>::type _10;

} // namespace placeholders

THRUST_NAMESPACE_END

#include <thrust/detail/functional/operators.h>
#include <thrust/detail/type_traits/is_commutative.h>