CODEWITHSUNDEEP
vhdl
KARO3213
KARO3213

Reputation: 31

VHDL calculations inside a function

I want to write a function that returns mod 100. What's wrong with code below?

subtype int is integer range 0 to 255;
function div(val : int) return int is 
    variable result : int;
    variable number : int;
begin
    result := 0;
    number := val;
    while number >= 100 loop
        result := result + 1;
        number := number - 100;
    end loop;
    return result;
end div;

Upvotes: 0

Views: 134

Answers (1)

the busybee
the busybee

Reputation: 12600

Edit: extend the answer to be more understandable.

In your function you return the quotient that is counted in result, not the remainder that is left in number. But this is what I would expect from a function named div().

If you want to return the remainder, you can use the same code, but change the last line into

return number;

And I would rename this new function to mod().

Upvotes: 1

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