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LibJS: Add Math.max()

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This commit is contained in:
Andreas Kling 2020-04-05 00:57:00 +02:00
parent ca90f88d4e
commit d84de532f1
2 changed files with 24 additions and 0 deletions
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23
Libraries/LibJS/Runtime/MathObject.cpp
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@ -39,6 +39,7 @@ MathObject::MathObject()
put_native_function("sqrt", sqrt, 1); put_native_function("sqrt", sqrt, 1);
put_native_function("floor", floor, 1); put_native_function("floor", floor, 1);
put_native_function("round", round, 1); put_native_function("round", round, 1);
put_native_function("max", max, 2);
put("E", Value(M_E)); put("E", Value(M_E));
put("LN2", Value(M_LN2)); put("LN2", Value(M_LN2));
@ -109,4 +110,26 @@ Value MathObject::round(Interpreter& interpreter)
return Value(::roundf(number.as_double())); return Value(::roundf(number.as_double()));
} }
Value MathObject::max(Interpreter& interpreter)
{
if (!interpreter.argument_count()) {
// FIXME: I think this should return *negative* infinity.
return js_infinity();
}
if (interpreter.argument_count() == 1)
return interpreter.argument(0).to_number();
if (interpreter.argument_count() == 2) {
auto a = interpreter.argument(0).to_number();
auto b = interpreter.argument(1).to_number();
return Value(a.as_double() > b.as_double() ? a : b);
}
// FIXME: Support Math.max() with more arguments.
ASSERT_NOT_REACHED();
return {};
}
} }

1
Libraries/LibJS/Runtime/MathObject.h
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@ -43,6 +43,7 @@ private:
static Value sqrt(Interpreter&); static Value sqrt(Interpreter&);
static Value floor(Interpreter&); static Value floor(Interpreter&);
static Value round(Interpreter&); static Value round(Interpreter&);
static Value max(Interpreter&);
}; };
} }