public void ParameterBatchTest()
{
for (var past = 0; past < 10; past += 3)
for (var delta = 1e-8; delta < 1; delta *= 100)
for (int max_iterations = 0, i = 1; max_iterations < 50; max_iterations += i * i, i++)
inner(problems, 4, 1e-5, past, delta, max_iterations, (int)LineSearch.Default);
}