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58 lines
2.4 KiB
C++
58 lines
2.4 KiB
C++
/* Quicktex Texture Compression Library
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Copyright (C) 2021-2022 Andrew Cassidy <drewcassidy@me.com>
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Partially derived from rgbcx.h written by Richard Geldreich 2020 <richgel99@gmail.com>
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and licenced under the public domain
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <type_traits>
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// Thanks dkavolis
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template <typename E, typename = std::enable_if_t<std::is_enum_v<E>>> constexpr inline auto operator~(E a) noexcept -> E {
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using Base = std::underlying_type_t<E>;
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return static_cast<E>(~static_cast<Base>(a));
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}
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template <typename E, typename = std::enable_if_t<std::is_enum_v<E>>> constexpr inline auto operator|(E a, E b) noexcept -> E {
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using Base = std::underlying_type_t<E>;
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return static_cast<E>(static_cast<Base>(a) | static_cast<Base>(b));
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}
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template <typename E, typename = std::enable_if_t<std::is_enum_v<E>>> constexpr inline auto operator&(E a, E b) noexcept -> E {
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using Base = std::underlying_type_t<E>;
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return static_cast<E>(static_cast<Base>(a) & static_cast<Base>(b));
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}
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template <typename E, typename = std::enable_if_t<std::is_enum_v<E>>> constexpr inline auto operator^(E a, E b) noexcept -> E {
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using Base = std::underlying_type_t<E>;
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return static_cast<E>(static_cast<Base>(a) ^ static_cast<Base>(b));
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}
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template <typename E, typename = std::enable_if_t<std::is_enum_v<E>>> constexpr inline auto operator|=(E& a, E b) noexcept -> E& {
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a = a | b;
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return a;
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}
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template <typename E, typename = std::enable_if_t<std::is_enum_v<E>>> constexpr inline auto operator&=(E& a, E b) noexcept -> E& {
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a = a & b;
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return a;
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}
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template <typename E, typename = std::enable_if_t<std::is_enum_v<E>>> constexpr inline auto operator^=(E& a, E b) noexcept -> E& {
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a = a ^ b;
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return a;
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} |