Numerical Integration of scalar function

Hi Dear researchers. I want to calculate numerically the integral f(z)=exp(i*I*pi*z+cos(z)) where n eisai a matrix. i am using the above command

function out=I1mn(g,N,L,d,ai,si)
M=length(ai);
I=-N:N;
I=I(ones(2*N+1,1),:);
I=I.'-I;
fp=(@(z,n)exp(j*2*pi*n*z+(g)*(d*cos*2*pi*z/L))));
out=quadv(@(z)fp(z,I),ai,ai+si)

but when i execute my code i take the above message

Warning:Maximum function count exceeded; singularity likely.

>in quadv

in I1mn

How i can solve this problem to take good results

With best Regards DImitrios Gerontitis.

[Jan]

"n eisai a matrix" ? f(z)=exp(i*I*pi*z+cos(z)) does not contain an "n"?

What are the variables g,N,L,d,ai,si?

I do not see, why you implement:

exp(i*I*pi*z + cos(z))

as

exp(j*2*pi*n*z + (g)*(d*cos*2*pi*z/L)))

This is at least confusing.

[Bob Thompson]

Does the code run to completion and give you a result? If so, how do you know that the result isn't 'good'? What qualfies as a 'good' result with respect to the answers you are getting?

[Dimitrios Gerontitis]

Unfortunately i don't take any result. Do you know any numerical integration routine?

[Walter Roberson]

Could you give us some sample input values?

Are you using an old MATLAB that does not have integrate() ?

[Jan]

@Dimitrios: Did you see my comment?

[Dimitrios Gerontitis]

i find the solution with the command integral(fun,0,1,'ArrayValue',true)