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LibJS: Add support for Float16Array

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Implements TC39 stage three proposal for Float16Arrays:
https://tc39.es/proposal-float16array
This commit is contained in:
rmg-x 2024-11-09 15:29:03 -06:00 • committed by Andrew Kaster
commit ea20545853
Notes: github-actions[bot] 2024-11-10 21:49:20 +00:00
49 changed files with 133 additions and 8 deletions
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21
Libraries/LibJS/Runtime/MathObject.cpp
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@ -56,6 +56,7 @@ void MathObject::initialize(Realm& realm)
define_native_function(realm, vm.names.cbrt, cbrt, 1, attr);
define_native_function(realm, vm.names.atan2, atan2, 2, attr);
define_native_function(realm, vm.names.fround, fround, 1, attr);
define_native_function(realm, vm.names.f16round, f16round, 1, attr);
define_native_function(realm, vm.names.hypot, hypot, 2, attr);
define_native_function(realm, vm.names.imul, imul, 2, attr);
define_native_function(realm, vm.names.log, log, 1, attr, Bytecode::Builtin::MathLog);
@ -513,6 +514,26 @@ JS_DEFINE_NATIVE_FUNCTION(MathObject::fround)
return Value((float)number.as_double());
}
// 3.1 Math.f16round ( x ), https://tc39.es/proposal-float16array/#sec-math.f16round
JS_DEFINE_NATIVE_FUNCTION(MathObject::f16round)
{
// 1. Let n be ? ToNumber(x).
auto number = TRY(vm.argument(0).to_number(vm));
// 2. If n is NaN, return NaN.
if (number.is_nan())
return js_nan();
// 3. If n is one of +0𝔽, -0𝔽, +∞𝔽, or -∞𝔽, return n.
if (number.as_double() == 0 || number.is_infinity())
return number;
// 4. Let n16 be the result of converting n to IEEE 754-2019 binary16 format using roundTiesToEven mode.
// 5. Let n64 be the result of converting n16 to IEEE 754-2019 binary64 format.
// 6. Return the ECMAScript Number value corresponding to n64.
return Value(static_cast<f16>(number.as_double()));
}
// 21.3.2.18 Math.hypot ( ...args ), https://tc39.es/ecma262/#sec-math.hypot
JS_DEFINE_NATIVE_FUNCTION(MathObject::hypot)
{