def calculate():
f = request.args.get('f')
start_point = request.args.get('start_point')
eps = request.args.get('eps')
option = request.args.get('option')
if start_point is not None:
start_point = [float(x) for x in start_point.split()]
if eps is not None:
eps = float(eps)
find_min = True
if option == 'max':
find_min = False
descent = GradientDescent(f, start_point, eps, find_min)
length = Diff.length(descent.get_start_point())
diff_by_direction = descent.calculate_diff_by_direction(length)
mess = 'not monotonically'
if Diff.is_increasing(diff_by_direction):
mess = 'monotonically increasing'
if Diff.is_decreasing(diff_by_direction):
mess = 'monotonically decreasing'
res = descent.calculate()
report = descent.get_report()
return render_template('index.html',
descent=descent,
point=' '.join(map(str, descent.get_start_point())),
length=length,
diff_by_direction=diff_by_direction,
mess=mess,
report=report,
res='; '.join(map(str, res)))
