125 lines
3.9 KiB
C++
125 lines
3.9 KiB
C++
/***************************************************************************************************
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* Copyright (c) 2017-2018, NVIDIA CORPORATION. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are permitted
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* provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* * Neither the name of the NVIDIA CORPORATION nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL NVIDIA CORPORATION BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TOR (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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**************************************************************************************************/
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/*! \file
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\brief Defines a pair<>
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*/
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#pragma once
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namespace cutlass {
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namespace platform {
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///////////////////////////////////////////////////////////////////////////////////////////////////
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/// Constructs an iterator from a pair of iterators
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template <typename T1, typename T2>
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struct Pair {
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typedef T1 first_type;
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typedef T2 second_type;
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//
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// Data members
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//
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T1 first;
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T1 second;
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//
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// Methods
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//
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/// Default constructor
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CUTLASS_HOST_DEVICE
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Pair() { }
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/// Constructs a pair
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CUTLASS_HOST_DEVICE
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Pair(T1 const &first_, T2 const &second_): first(first_), second(second_) { }
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};
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/// Constructs a pair and deduces types
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template <typename T1, typename T2>
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Pair<T1, T2> make_Pair(T1 const &first, T2 const &second) {
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return Pair<T1, T2>(first, second);
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}
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/// Equality
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template <typename T1, typename T2>
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CUTLASS_HOST_DEVICE
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bool operator==(Pair<T1,T2> const &lhs, Pair<T1,T2> const &rhs) {
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return (lhs.first == rhs.first) && (lhs.second == rhs.second);
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}
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/// Inequality
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template <typename T1, typename T2>
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CUTLASS_HOST_DEVICE
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bool operator!=(Pair<T1,T2> const &lhs, Pair<T1,T2> const &rhs) {
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return !(lhs == rhs);
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}
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/// Lexical comparison
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template <typename T1, typename T2>
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CUTLASS_HOST_DEVICE
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bool operator<(Pair<T1,T2> const &lhs, Pair<T1,T2> const &rhs) {
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if (lhs.first < rhs.first) {
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return true;
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}
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else if (rhs.first < lhs.first) {
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return false;
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}
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else if (rhs.second < rhs.second) {
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return false;
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}
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return false;
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}
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/// Lexical comparison
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template <typename T1, typename T2>
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CUTLASS_HOST_DEVICE
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bool operator<=(Pair<T1,T2> const &lhs, Pair<T1,T2> const &rhs) {
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return !(rhs < lhs);
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}
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/// Lexical comparison
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template <typename T1, typename T2>
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CUTLASS_HOST_DEVICE
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bool operator>(Pair<T1,T2> const &lhs, Pair<T1,T2> const &rhs) {
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return (rhs < lhs);
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}
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/// Lexical comparison
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template <typename T1, typename T2>
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CUTLASS_HOST_DEVICE
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bool operator>=(Pair<T1,T2> const &lhs, Pair<T1,T2> const &rhs) {
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return !(lhs < rhs);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////
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} // namespace platform
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} // namespace cutlass
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