public IEnumerable <string> GetFunctions(string expression)
{
var list = new List <string>();
var node = InternalParser.Parse(expression);
DoubleBuilder.FunctionFound += (o, e) =>
{
list.Add(e.Function.Name);
e.Result = 0;
};
try
{
DoubleBuilder.Build(node);
}
catch (Exception)
{
if (ThrowOnErrors)
{
throw;
}
}
return(list);
}
public void When_Function1D_Expect_Reference(string func, double arg, double darg, double expected, double dexpected)
{
var base_builder = new DoubleBuilder();
var builder = new DerivativeBuilder <double>(base_builder);
var x = new Variable("x");
var derivative = new Derivatives <double> {
Value = arg
};
derivative[x] = darg;
var result = ((IBuilder <Derivatives <double> >)builder).CreateFunction(func, new[] { derivative });
Assert.AreEqual(expected, result.Value, 1e-12);
Assert.AreEqual(dexpected, result[x], 1e-12);
}
public double Parse(string expression)
{
var node = InternalParser.Parse(expression);
return(DoubleBuilder.Build(node));
}
