public override int Eval(Stack st)
{
int narg = GetNarg(st);
var dgl = GetAlgebraic(st);
var y = GetVariable(st);
var x = GetVariable(st);
var p = Poly.Coefficient(dgl, y, 1);
var q = Poly.Coefficient(dgl, y, 0);
var pi = LambdaINTEGRATE.Integrate(p, x);
if (pi is Rational && !pi.IsNumber())
{
pi = (new LambdaRAT()).SymEval(pi);
}
Variable vexp = new FunctionVariable("exp", pi, new LambdaEXP());
Algebraic dn = new Polynomial(vexp);
var qi = LambdaINTEGRATE.Integrate(q / dn, x);
if (qi is Rational && !qi.IsNumber())
{
qi = (new LambdaRAT()).SymEval(qi);
}
Algebraic cn = new Polynomial(new SimpleVariable("C"));
var res = (qi + cn) * dn;
res = (new ExpandUser()).SymEval(res);
Debug("User Function expand: " + res);
res = (new TrigExpand()).SymEval(res);
Debug("Trigexpand: " + res);
res = (new NormExp()).SymEval(res);
Debug("Norm: " + res);
if (res is Rational)
{
res = (new LambdaRAT()).SymEval(res);
}
res = (new TrigInverseExpand()).SymEval(res);
Debug("Triginverse: " + res);
res = (new SqrtExpand()).SymEval(res);
st.Push(res);
return(0);
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: public int lambda(Stack st) throws ParseException, JasymcaException
public override int lambda(Stack st)
{
int narg = getNarg(st);
Algebraic dgl = getAlgebraic(st);
Variable y = getVariable(st);
Variable x = getVariable(st);
Algebraic p = Poly.coefficient(dgl, y, 1);
Algebraic q = Poly.coefficient(dgl, y, 0);
Algebraic pi = LambdaINTEGRATE.integrate(p, x);
if (pi is Rational && !pi.exaktq())
{
pi = (new LambdaRAT()).f_exakt(pi);
}
Variable vexp = new FunctionVariable("exp", pi, new LambdaEXP());
Algebraic dn = new Polynomial(vexp);
Algebraic qi = LambdaINTEGRATE.integrate(q.div(dn), x);
if (qi is Rational && !qi.exaktq())
{
qi = (new LambdaRAT()).f_exakt(qi);
}
Algebraic cn = new Polynomial(new SimpleVariable("C"));
Algebraic res = qi.add(cn).mult(dn);
res = (new ExpandUser()).f_exakt(res);
debug("User Function expand: " + res);
res = (new TrigExpand()).f_exakt(res);
debug("Trigexpand: " + res);
res = (new NormExp()).f_exakt(res);
debug("Norm: " + res);
if (res is Rational)
{
res = (new LambdaRAT()).f_exakt(res);
}
res = (new TrigInverseExpand()).f_exakt(res);
debug("Triginverse: " + res);
res = (new SqrtExpand()).f_exakt(res);
st.Push(res);
return(0);
}
