Error while building a custom AND/OR function and Custom implication functions

I want to create a custom fuzzy operator 'bounded_sum' and I have defined it as

function out = bounded_sum( x , y)
%UNTITLED Summary of this function goes here
%   Detailed explanation goes here
z=zeros(size(x);
out = min(1,x+y)
end

I am get following error

Error using bounded_sum (line 5) Not enough input arguments.

Error in evalfis (line 84) [output,IRR,ORR,ARR] = evalfismex(input, fis, numofpoints);

Error in ruleview (line 451) [v,irr,orr,arr]=evalfis(inputVector,fis, numPts);

Error in ruleview (line 313) ruleview #update

Error in fisgui (line 102) eval([tag '(fis);']);

Error while evaluating uimenu Callback

Kindly help me out.

[Azzi Abdelmalek]

how did you call your function?

[VAIBHAV AGRAWAL]

Actually function is called by the fuzzy toolbox while evaluting for my fis 'test'. I have referred to this link for creating custom operators.It says my 'bounded_sum' should be same as the operator max(x,y). Similar kind of error comes when I implement 'custom_imp' function. I am getting something wrong , help me out.

[Azzi Abdelmalek]

how your fuzzy toolbox calls this function?

[VAIBHAV AGRAWAL]

This is the first step of the fis where for each fuzzy rule with multiple antecdents , a single number is obtained by applying a fuzzy operator(default toolbox contains AND and OR , i am trying a custom method).This is what my output of bounded_sum will be , a single no for each rule. On this number we further implement the corresponding implication method.

Answer 1

[Azzi Abdelmalek]

Call your function%

x=rand(4,5);
y=rand(4,5)
out = bounded_sum( x , y)

% there is no error in your function, maybe it was not correctly called.

z=zeros(size(x)); % is enough

Answer 2

[Jan]

Just a note: You can simplify your function:

function out = bounded_sum( x , y)
out = min(1, x + y);
end

A complete copy of the error message is usually helpful in the forum.

[VAIBHAV AGRAWAL]

I have edited my question. Please have a look