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42 lines
811 B
C++
Executable File
42 lines
811 B
C++
Executable File
// Copyright 2019 yuzu Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#ifdef _MSC_VER
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#include <intrin.h>
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#pragma intrinsic(_umul128)
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#pragma intrinsic(_udiv128)
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#endif
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#include <cstring>
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#include "common/uint128.h"
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namespace Common {
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#ifdef _MSC_VER
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u64 MultiplyAndDivide64(u64 a, u64 b, u64 d) {
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u128 r{};
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r[0] = _umul128(a, b, &r[1]);
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u64 remainder;
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#if _MSC_VER < 1923
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return udiv128(r[1], r[0], d, &remainder);
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#else
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return _udiv128(r[1], r[0], d, &remainder);
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#endif
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}
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#else
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u64 MultiplyAndDivide64(u64 a, u64 b, u64 d) {
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const u64 diva = a / d;
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const u64 moda = a % d;
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const u64 divb = b / d;
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const u64 modb = b % d;
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return diva * b + moda * divb + moda * modb / d;
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}
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#endif
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} // namespace Common
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