// (addr -- ) (F: -- f)
private int DFFetchAction()
{
_interpreter.StackExpect(1);
_interpreter.FStackFree(1);
var addr = _interpreter.Pop();
_interpreter.CheckCellAlignedAddress(addr);
_interpreter.CheckAddressesRange(addr, Heap.DoubleCellSize);
_interpreter.FPush(_interpreter.State.Heap.ReadDouble(addr));
return(1);
}
// ( -- false | true) (F: | f -- ) {s -- }
private int ToNumberAction()
{
_interpreter.ObjectStackExpect(1);
var f = _interpreter.ParseFloatingPointNumber(_interpreter.OPop().ToString(), out var success);
if (success)
{
_interpreter.StackFree(1);
_interpreter.FStackFree(1);
_interpreter.FPush(f);
_interpreter.Push(-1);
}
else
{
_interpreter.StackFree(1);
_interpreter.Push(0);
}
return(1);
}