void emulate_Neg(Instruction instr)
{
var val1 = valueStack.pop();
if (val1.isInt32())
{
valueStack.push(Int32Value.Neg((Int32Value)val1));
}
else if (val1.isInt64())
{
valueStack.push(Int64Value.Neg((Int64Value)val1));
}
else if (val1.isReal8())
{
valueStack.push(Real8Value.Neg((Real8Value)val1));
}
else
{
valueStack.pushUnknown();
}
}