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LibWasm: Implement fx.nearest using nearbyint() instead of round()

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This instruction wants RoundingMode::ToEven, so let's use the correct
function.
This commit is contained in:
Ali Mohammad Pur 2021-08-30 16:21:21 +04:30 • committed by Andreas Kling
parent e93c740df5
commit 2c7e2e351a
2 changed files with 5 additions and 5 deletions
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4
Userland/Libraries/LibWasm/AbstractMachine/BytecodeInterpreter.cpp
View file

@ -824,7 +824,7 @@ void BytecodeInterpreter::interpret(Configuration& configuration, InstructionPoi
case Instructions::f32_trunc.value(): case Instructions::f32_trunc.value():
return unary_operation<float, float, Operators::Truncate>(configuration); return unary_operation<float, float, Operators::Truncate>(configuration);
case Instructions::f32_nearest.value(): case Instructions::f32_nearest.value():
return unary_operation<float, float, Operators::Round>(configuration); return unary_operation<float, float, Operators::NearbyIntegral>(configuration);
case Instructions::f32_sqrt.value(): case Instructions::f32_sqrt.value():
return unary_operation<float, float, Operators::SquareRoot>(configuration); return unary_operation<float, float, Operators::SquareRoot>(configuration);
case Instructions::f32_add.value(): case Instructions::f32_add.value():
@ -852,7 +852,7 @@ void BytecodeInterpreter::interpret(Configuration& configuration, InstructionPoi
case Instructions::f64_trunc.value(): case Instructions::f64_trunc.value():
return unary_operation<double, double, Operators::Truncate>(configuration); return unary_operation<double, double, Operators::Truncate>(configuration);
case Instructions::f64_nearest.value(): case Instructions::f64_nearest.value():
return unary_operation<double, double, Operators::Round>(configuration); return unary_operation<double, double, Operators::NearbyIntegral>(configuration);
case Instructions::f64_sqrt.value(): case Instructions::f64_sqrt.value():
return unary_operation<double, double, Operators::SquareRoot>(configuration); return unary_operation<double, double, Operators::SquareRoot>(configuration);
case Instructions::f64_add.value(): case Instructions::f64_add.value():

6
Userland/Libraries/LibWasm/AbstractMachine/Operators.h
View file

@ -271,14 +271,14 @@ struct Truncate {
static StringView name() { return "truncate"; } static StringView name() { return "truncate"; }
}; };
struct Round { struct NearbyIntegral {
template<typename Lhs> template<typename Lhs>
auto operator()(Lhs lhs) const auto operator()(Lhs lhs) const
{ {
if constexpr (IsSame<Lhs, float>) if constexpr (IsSame<Lhs, float>)
return roundf(lhs); return nearbyintf(lhs);
else if constexpr (IsSame<Lhs, double>) else if constexpr (IsSame<Lhs, double>)
return round(lhs); return nearbyint(lhs);
else else
VERIFY_NOT_REACHED(); VERIFY_NOT_REACHED();
} }