public void TestIntegralExp()
{
var exp = RrFunctions.Exp(0.1);
var step = new StepFunction(new[] { 0.0, 5.0 }, new[] { 0.015, 0.010 }, 0.0);
var f = exp * step;
var integral = f.Integral(0.0);
var testVal = integral.Eval(10.0);
var expintegral = exp.Integral(0.0);
var refVal = 0.015 * (expintegral.Eval(5.0) - expintegral.Eval(0.0))
+ 0.01 * (expintegral.Eval(10.0) - expintegral.Eval(5.0));
Assert.IsTrue(DoubleUtils.Equality(testVal, refVal, 1.5 * DoubleUtils.MachineEpsilon));
}
