public void CompileSampleFunc()
{
var exprString = "x ^ 3 + sin(3 * ln(x * 1)) + x ^ ln(2 * sin(3 * ln(x))) - 2 * x ^ 3";
var dotnetFunc = new Func <double, double>(x =>
Math.Pow(x, 3) + Math.Sin(3 * Math.Log(x * 1)) + Math.Pow(x, Math.Log(2 * Math.Sin(3 * Math.Log(x))) - 2 * Math.Pow(x, 3)));
using (var mathAssembly = new MathAssembly(exprString, "x"))
{
var rand = new Random();
int i = 0;
while (i < 5)
{
double x = rand.NextDouble();
var dotnet = dotnetFunc(x);
if (!double.IsNaN(dotnet))
{
var correct = WolframAlphaUtils.GetValue(exprString, new KeyValuePair <string, double>("x", x));
var actual = mathAssembly.Func(x);
Assert.LessOrEqual(Math.Abs(correct - actual), Math.Abs(dotnet - actual));
i++;
}
}
}
}
public static void PrecompileTest2()
{
MathFunc func = new MathFunc("-(sin(x) ^ -2 * x) + -(sin(x) ^ -1 * cos(x)) + cos(x) ^ -2 * x + cos(x) ^ -1 * sin(x) ^ -1");
Assert.IsTrue(WolframAlphaUtils.CheckEquality(func.ToString(), func.GetPrecompilied().ToString()));
}
public void CheckDerivativeWithWolframAlpha(string expression)
{
var derivativeExpression = new MathFunc(expression).GetDerivative().GetPrecompilied().ToString();
Assert.IsTrue(WolframAlphaUtils.CheckDerivative(expression, derivativeExpression));
}
