199 lines
7.1 KiB
C++
199 lines
7.1 KiB
C++
/***************************************************************************************************
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* Copyright (c) 2023 - 2023 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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* SPDX-License-Identifier: BSD-3-Clause
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (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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#pragma once
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#include <cute/config.hpp>
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#include <cute/util/type_traits.hpp>
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/** C++14 <functional> extensions */
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namespace cute {
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/**************/
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/** Identity **/
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/**************/
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struct identity {
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template <class T>
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CUTE_HOST_DEVICE constexpr
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decltype(auto) operator()(T&& arg) const {
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return std::forward<T>(arg);
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}
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};
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template <class R>
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struct constant_fn {
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template <class... T>
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CUTE_HOST_DEVICE constexpr
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decltype(auto) operator()(T&&...) const {
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return r_;
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}
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R r_;
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};
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/***********/
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/** Unary **/
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/***********/
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#define CUTE_LEFT_UNARY_OP(NAME,OP) \
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struct NAME { \
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template <class T> \
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CUTE_HOST_DEVICE constexpr \
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decltype(auto) operator()(T&& arg) const { \
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return OP std::forward<T>(arg); \
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} \
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}
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#define CUTE_RIGHT_UNARY_OP(NAME,OP) \
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struct NAME { \
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template <class T> \
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CUTE_HOST_DEVICE constexpr \
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decltype(auto) operator()(T&& arg) const { \
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return std::forward<T>(arg) OP ; \
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} \
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}
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#define CUTE_NAMED_UNARY_OP(NAME,OP) \
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struct NAME { \
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template <class T> \
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CUTE_HOST_DEVICE constexpr \
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decltype(auto) operator()(T&& arg) const { \
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return OP (std::forward<T>(arg)); \
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} \
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}
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CUTE_LEFT_UNARY_OP(unary_plus, +);
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CUTE_LEFT_UNARY_OP(negate, -);
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CUTE_LEFT_UNARY_OP(bit_not, ~);
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CUTE_LEFT_UNARY_OP(logical_not, !);
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CUTE_LEFT_UNARY_OP(dereference, *);
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CUTE_LEFT_UNARY_OP(address_of, &);
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CUTE_LEFT_UNARY_OP(pre_increment, ++);
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CUTE_LEFT_UNARY_OP(pre_decrement, --);
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CUTE_RIGHT_UNARY_OP(post_increment, ++);
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CUTE_RIGHT_UNARY_OP(post_decrement, --);
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CUTE_NAMED_UNARY_OP(abs_fn, abs);
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CUTE_NAMED_UNARY_OP(conjugate, cute::conj);
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#undef CUTE_LEFT_UNARY_OP
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#undef CUTE_RIGHT_UNARY_OP
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#undef CUTE_NAMED_UNARY_OP
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/************/
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/** Binary **/
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/************/
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#define CUTE_BINARY_OP(NAME,OP) \
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struct NAME { \
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template <class T, class U> \
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CUTE_HOST_DEVICE constexpr \
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decltype(auto) operator()(T&& lhs, U&& rhs) const { \
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return std::forward<T>(lhs) OP std::forward<U>(rhs); \
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} \
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}
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#define CUTE_NAMED_BINARY_OP(NAME,OP) \
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struct NAME { \
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template <class T, class U> \
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CUTE_HOST_DEVICE constexpr \
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decltype(auto) operator()(T&& lhs, U&& rhs) const { \
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return OP (std::forward<T>(lhs), std::forward<U>(rhs)); \
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} \
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}
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CUTE_BINARY_OP(plus, +);
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CUTE_BINARY_OP(minus, -);
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CUTE_BINARY_OP(multiplies, *);
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CUTE_BINARY_OP(divides, /);
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CUTE_BINARY_OP(modulus, %);
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CUTE_BINARY_OP(plus_assign, +=);
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CUTE_BINARY_OP(minus_assign, -=);
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CUTE_BINARY_OP(multiplies_assign, *=);
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CUTE_BINARY_OP(divides_assign, /=);
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CUTE_BINARY_OP(modulus_assign, %=);
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CUTE_BINARY_OP(bit_and, &);
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CUTE_BINARY_OP(bit_or, |);
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CUTE_BINARY_OP(bit_xor, ^);
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CUTE_BINARY_OP(left_shift, <<);
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CUTE_BINARY_OP(right_shift, >>);
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CUTE_BINARY_OP(bit_and_assign, &=);
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CUTE_BINARY_OP(bit_or_assign, |=);
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CUTE_BINARY_OP(bit_xor_assign, ^=);
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CUTE_BINARY_OP(left_shift_assign, <<=);
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CUTE_BINARY_OP(right_shift_assign, >>=);
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CUTE_BINARY_OP(logical_and, &&);
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CUTE_BINARY_OP(logical_or, ||);
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CUTE_BINARY_OP(equal_to, ==);
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CUTE_BINARY_OP(not_equal_to, !=);
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CUTE_BINARY_OP(greater, >);
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CUTE_BINARY_OP(less, <);
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CUTE_BINARY_OP(greater_equal, >=);
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CUTE_BINARY_OP(less_equal, <=);
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CUTE_NAMED_BINARY_OP(max_fn, cute::max);
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CUTE_NAMED_BINARY_OP(min_fn, cute::min);
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#undef CUTE_BINARY_OP
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#undef CUTE_NAMED_BINARY_OP
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/**********/
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/** Meta **/
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/**********/
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template <class Fn, class Arg>
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struct bound_fn {
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template <class T>
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CUTE_HOST_DEVICE constexpr
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decltype(auto)
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operator()(T&& arg) {
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return fn_(arg_, std::forward<T>(arg));
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}
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Fn fn_;
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Arg arg_;
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};
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template <class Fn, class Arg>
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CUTE_HOST_DEVICE constexpr
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auto
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bind(Fn const& fn, Arg const& arg) {
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return bound_fn<Fn,Arg>{fn, arg};
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}
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} // end namespace cute
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