def compare $($a $,$ b $)$:

# a and b are integers

if a $>$ b :

return $1$

elif b $>$ a :

return $-1$

else :

return $0$

$$

With regard to the function above:

$$ What is its big$-$O time complexity? Very briefly justify your answer.

$$ If you used any variables, such as N$,$ in your time complexity, define them in term of the function$$s

parameters.