help me with these commands

daynum(x) //x is a variable int type defined in program earlier

dayToArrayNum(y) // y is a variable int type defined in program earlier

(FindH(y,x)) //x and y is a variable int type defined in program earlier

Is English your mother tongue?

No, English is not my mother tongue. Can you please help me with the syntax.

can anyone please help

Whoa! Slow down! It may be a few days before you get an answer.

As far as I know, those functions are not available on the Arduino.

You will get the best answers if you're patient and describe what you are trying to accomplish. For example... What do you expect "daynum" to do? Why do you need "daynum"?

thx please help me out.

i am trying to code some formulas. requiring day no, month, year lat long of places ete. basically for a heliostat

What do these formulae look like?