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How do I define my own mymod function?

I am trying to define my own mymod function where mod is usual 3 mod 2 =1 function. I dont know where to start. Any Suggestion?

Solution

  • Since you don't know where to start, here are a few hints:

    1) mymod should be an infix function. The proper syntax for this is

    infix mymod;
fun x mymod y = ...

    2) You should find out how to implement mymod using -, * and \. I suggest you try out a few examples by hand before writing the function.

    3) It's up to you to handle the division by zero case.