65 lines
1.3 KiB
C++
65 lines
1.3 KiB
C++
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/* This file is part of the dynarmic project.
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* Copyright (c) 2018 MerryMage
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* This software may be used and distributed according to the terms of the GNU
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* General Public License version 2 or any later version.
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*/
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#include <array>
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#include "common/common_types.h"
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#include "common/u128.h"
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namespace Dynarmic {
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u128 operator<<(u128 operand, int amount) {
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if (amount < 0) {
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return operand >> -amount;
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}
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if (amount == 0) {
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return operand;
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}
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if (amount < 64) {
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u128 result;
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result.lower = (operand.lower << amount);
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result.upper = (operand.upper << amount) | (operand.lower >> (64 - amount));
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return result;
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}
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if (amount < 128) {
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u128 result;
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result.upper = operand.lower << (amount - 64);
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return result;
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}
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return {};
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}
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u128 operator>>(u128 operand, int amount) {
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if (amount < 0) {
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return operand << -amount;
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}
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if (amount == 0) {
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return operand;
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}
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if (amount < 64) {
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u128 result;
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result.lower = (operand.lower >> amount) | (operand.upper << (64 - amount));
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result.upper = (operand.upper >> amount);
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return result;
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}
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if (amount < 128) {
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u128 result;
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result.lower = operand.upper >> (amount - 64);
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return result;
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}
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return {};
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}
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} // namespace Dynarmic
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