How to convert this formula to matlab language

Hi guys,

I would like to convert this formula to matlab language.

α = arctan(y − 1/3, x − 1/3) modulus 2π

I tried a=atan2(y-1/3,x-1/3)*mod(2pi) but mod function needs more variables

Thank you

Answer 1

[Walter Roberson]

a = mod(atan2(y-1/3,x-1/3), 2*pi)