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let rec andb b1 b2 =
if b1
then if b2
then true
else false
else false in
let rec abs f =
if 0.0 <. f
then f
else -1.0 *. f in
let rec isConv x y =
if (andb ((abs x) <. 1.0) ((abs y) <. 1.0))
then true
else false in
let times = 10 in
let rec m a b =
let rec f x y n =
if times < n
then isConv x y
else f (x *.x -. y*.y +. a) (2.0 *. x *. y +. b) (n + 1) in
f a b 0 in
let dt = 0.05 in
let rec plot x y =
if (andb (1.0 <. x) (1.0 <. y))
then
true
else
let xx = if 1.0 <. x then -1.0 else x +. dt in
let yy = if 1.0 <. x then y +. dt else y in
if (m x y)
then
print_f32 x;
print_f32 y;
plot xx yy
else
plot xx yy in
plot -1.0 -1.0
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