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asm.hpp: Fix mul_saturate

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Eladash 2023-06-21 11:30:09 +03:00 • committed by kd-11
commit 307e1351df
1 changed files with 1 additions and 2 deletions
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rpcs3/util/asm.hpp
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@ -401,11 +401,10 @@ namespace utils
return minuend < subtrahend ? T{0} : static_cast<T>(minuend - subtrahend); return minuend < subtrahend ? T{0} : static_cast<T>(minuend - subtrahend);
} }
template <UnsignedInt T> template <UnsignedInt T>
constexpr T mul_saturate(T factor1, T factor2) constexpr T mul_saturate(T factor1, T factor2)
{ {
return T{umax} / factor1 < factor2 ? T{umax} : static_cast<T>(factor1 * factor2); return factor1 > 0 && T{umax} / factor1 < factor2 ? T{umax} : static_cast<T>(factor1 * factor2);
} }
// Hack. Pointer cast util to workaround UB. Use with extreme care. // Hack. Pointer cast util to workaround UB. Use with extreme care.