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Diffstat (limited to 'src/common/overflow.h')
-rw-r--r-- | src/common/overflow.h | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/common/overflow.h b/src/common/overflow.h new file mode 100644 index 000000000..44d8e7e73 --- /dev/null +++ b/src/common/overflow.h @@ -0,0 +1,22 @@ +// SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project +// SPDX-License-Identifier: GPL-2.0-or-later + +#pragma once + +#include <type_traits> +#include "bit_cast.h" + +namespace Common { + +template <typename T> + requires(std::is_integral_v<T> && std::is_signed_v<T>) +inline T WrappingAdd(T lhs, T rhs) { + using U = std::make_unsigned_t<T>; + + U lhs_u = BitCast<U>(lhs); + U rhs_u = BitCast<U>(rhs); + + return BitCast<T>(lhs_u + rhs_u); +} + +} // namespace Common |