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LibJS/JIT: Add builtin for Math.round()

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This commit is contained in:
Andreas Kling 2023-11-24 09:50:11 +01:00
parent c2ff238467
commit 8447544e17
4 changed files with 24 additions and 3 deletions
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1
Userland/Libraries/LibJS/Bytecode/Builtins.h
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@ -18,6 +18,7 @@ namespace JS::Bytecode {
O(MathPow, math_pow, Math, pow, 2) \
O(MathCeil, math_ceil, Math, ceil, 1) \
O(MathFloor, math_floor, Math, floor, 1) \
O(MathRound, math_round, Math, round, 1) \
O(MathSqrt, math_sqrt, Math, sqrt, 1)
enum class Builtin {

13
Userland/Libraries/LibJS/JIT/Compiler.cpp
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@ -2689,6 +2689,19 @@ void Compiler::compile_builtin_math_ceil(Assembler::Label&, Assembler::Label& en
m_assembler.jump(end);
}
static Value cxx_math_round(VM& vm, Value, Value value)
{
return TRY_OR_SET_EXCEPTION(MathObject::round_impl(vm, value));
}
void Compiler::compile_builtin_math_round(Assembler::Label&, Assembler::Label& end)
{
native_call((void*)cxx_math_round);
store_accumulator(RET);
check_exception();
m_assembler.jump(end);
}
void Compiler::compile_builtin_math_abs(Assembler::Label& slow_case, Assembler::Label& end)
{
branch_if_int32(ARG2, [&] {

12
Userland/Libraries/LibJS/Runtime/MathObject.cpp
View file

@ -34,7 +34,7 @@ void MathObject::initialize(Realm& realm)
define_native_function(realm, vm.names.sqrt, sqrt, 1, attr, Bytecode::Builtin::MathSqrt);
define_native_function(realm, vm.names.floor, floor, 1, attr, Bytecode::Builtin::MathFloor);
define_native_function(realm, vm.names.ceil, ceil, 1, attr, Bytecode::Builtin::MathCeil);
define_native_function(realm, vm.names.round, round, 1, attr);
define_native_function(realm, vm.names.round, round, 1, attr, Bytecode::Builtin::MathRound);
define_native_function(realm, vm.names.max, max, 2, attr);
define_native_function(realm, vm.names.min, min, 2, attr);
define_native_function(realm, vm.names.trunc, trunc, 1, attr);
@ -770,10 +770,10 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::random)
}
// 21.3.2.28 Math.round ( x ), https://tc39.es/ecma262/#sec-math.round
JS_DEFINE_NATIVE_FUNCTION(MathObject::round)
ThrowCompletionOr<Value> MathObject::round_impl(VM& vm, Value x)
{
// 1. Let n be ? ToNumber(x).
auto number = TRY(vm.argument(0).to_number(vm));
auto number = TRY(x.to_number(vm));
// 2. If n is not finite or n is an integral Number, return n.
if (!number.is_finite_number() || number.as_double() == ::trunc(number.as_double()))
@ -788,6 +788,12 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::round)
return Value(integer);
}
// 21.3.2.28 Math.round ( x ), https://tc39.es/ecma262/#sec-math.round
JS_DEFINE_NATIVE_FUNCTION(MathObject::round)
{
return round_impl(vm, vm.argument(0));
}
// 21.3.2.29 Math.sign ( x ), https://tc39.es/ecma262/#sec-math.sign
JS_DEFINE_NATIVE_FUNCTION(MathObject::sign)
{

1
Userland/Libraries/LibJS/Runtime/MathObject.h
View file

@ -23,6 +23,7 @@ public:
static ThrowCompletionOr<Value> pow_impl(VM&, Value base, Value exponent);
static ThrowCompletionOr<Value> floor_impl(VM&, Value);
static ThrowCompletionOr<Value> ceil_impl(VM&, Value);
static ThrowCompletionOr<Value> round_impl(VM&, Value);
private:
explicit MathObject(Realm&);