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cdb240f3d4
[REUSE] is a specification that aims at making file copyright
information consistent, so that it can be both human and machine
readable. It basically requires that all files have a header containing
copyright and licensing information. When this isn't possible, like
when dealing with binary assets, generated files or embedded third-party
dependencies, it is permitted to insert copyright information in the
`.reuse/dep5` file.
Oh, and it also requires that all the licenses used in the project are
present in the `LICENSES` folder, that's why the diff is so huge.
This can be done automatically with `reuse download --all`.
The `reuse` tool also contains a handy subcommand that analyzes the
project and tells whether or not the project is (still) compliant,
`reuse lint`.
Following REUSE has a few advantages over the current approach:
- Copyright information is easy to access for users / downstream
- Files like `dist/license.md` do not need to exist anymore, as
`.reuse/dep5` is used instead
- `reuse lint` makes it easy to ensure that copyright information of
files like binary assets / images is always accurate and up to date
To add copyright information of files that didn't have it I looked up
who committed what and when, for each file. As yuzu contributors do not
have to sign a CLA or similar I couldn't assume that copyright ownership
was of the "yuzu Emulator Project", so I used the name and/or email of
the commit author instead.
[REUSE]: https://reuse.software
Follow-up to 01cf05bc75
94 lines
2.6 KiB
C++
94 lines
2.6 KiB
C++
// SPDX-FileCopyrightText: 2014 Jannik Vogel <email@jannikvogel.de>
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// SPDX-License-Identifier: CC0-1.0
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#pragma once
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#include <cstddef>
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#include <new>
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#include <type_traits>
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namespace Common {
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template <typename T>
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requires std::is_unsigned_v<T>
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[[nodiscard]] constexpr T AlignUp(T value, size_t size) {
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auto mod{static_cast<T>(value % size)};
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value -= mod;
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return static_cast<T>(mod == T{0} ? value : value + size);
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}
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template <typename T>
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requires std::is_unsigned_v<T>
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[[nodiscard]] constexpr T AlignUpLog2(T value, size_t align_log2) {
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return static_cast<T>((value + ((1ULL << align_log2) - 1)) >> align_log2 << align_log2);
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}
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template <typename T>
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requires std::is_unsigned_v<T>
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[[nodiscard]] constexpr T AlignDown(T value, size_t size) {
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return static_cast<T>(value - value % size);
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}
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template <typename T>
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requires std::is_unsigned_v<T>
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[[nodiscard]] constexpr bool Is4KBAligned(T value) {
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return (value & 0xFFF) == 0;
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}
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template <typename T>
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requires std::is_unsigned_v<T>
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[[nodiscard]] constexpr bool IsWordAligned(T value) {
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return (value & 0b11) == 0;
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}
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template <typename T>
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requires std::is_integral_v<T>
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[[nodiscard]] constexpr bool IsAligned(T value, size_t alignment) {
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using U = typename std::make_unsigned_t<T>;
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const U mask = static_cast<U>(alignment - 1);
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return (value & mask) == 0;
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}
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template <typename T, typename U>
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requires std::is_integral_v<T>
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[[nodiscard]] constexpr T DivideUp(T x, U y) {
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return (x + (y - 1)) / y;
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}
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template <typename T, size_t Align = 16>
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class AlignmentAllocator {
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public:
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using value_type = T;
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using size_type = size_t;
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using difference_type = ptrdiff_t;
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using propagate_on_container_copy_assignment = std::true_type;
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using propagate_on_container_move_assignment = std::true_type;
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using propagate_on_container_swap = std::true_type;
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using is_always_equal = std::false_type;
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constexpr AlignmentAllocator() noexcept = default;
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template <typename T2>
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constexpr AlignmentAllocator(const AlignmentAllocator<T2, Align>&) noexcept {}
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[[nodiscard]] T* allocate(size_type n) {
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return static_cast<T*>(::operator new (n * sizeof(T), std::align_val_t{Align}));
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}
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void deallocate(T* p, size_type n) {
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::operator delete (p, n * sizeof(T), std::align_val_t{Align});
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}
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template <typename T2>
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struct rebind {
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using other = AlignmentAllocator<T2, Align>;
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};
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template <typename T2, size_t Align2>
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constexpr bool operator==(const AlignmentAllocator<T2, Align2>&) const noexcept {
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return std::is_same_v<T, T2> && Align == Align2;
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}
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};
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} // namespace Common
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