public Flow ToFlow(Lst <Equation> eqs, Style style)
{
// this is a bit redundant because eventually we call Flow.Normalize, but Normalize does not handle pos, etc.
Flow result;
if (op == "id")
{
result = Monomial.ToFlow(args[0], eqs, style);
}
else if (op == "time")
{
result = Flow.zero;
}
else if (op == "poly 1/[]")
{
Flow arg0 = Monomial.ToFlow(args[0], eqs, style);
if (arg0 is NumberFlow num)
{
result = new NumberFlow(1 / num.value);
}
else
{
result = OpFlow.Op(Flow.one, "/", arg0);
}
}
else if (op == "poly []^(1/[])")
{
Flow arg0 = Monomial.ToFlow(args[0], eqs, style);
Flow arg1 = Monomial.ToFlow(args[1], eqs, style);
if (arg0 is NumberFlow num0 && arg1 is NumberFlow num1)
{
result = new NumberFlow(Math.Pow(num0.value, 1 / num1.value));
}
else
{
result = OpFlow.Op(arg0, "^", OpFlow.Op(Flow.one, "/", arg1));
}
}