Function inside a for loop

Hi,

I have a function that works well when I called it one by one.

>>Calculate(a,cs,sclk)
ans: 20
>>Calculate(a,cs,sclk)
ans: 20.5
>>Calculate(a,cs,sclk)
ans: 20.25

However, when i switching the function inside a for loop, it kept produced the same answer.

for j=1:9
    d=Calculate(a,cs,sclk);
    fprintf('value %d is %d\n',j,d);
end

Asnwer:

value 1 is 10
value 2 is 10
.
.
.
value 9 is 10

And I called it in a series. They all produced the same answer.

>> d1=Calculate(a,cs,sclk);d2=Calculate(a,cs,sclk);d3=Calculate(a,cs,sclk);d4=Calculate(a,cs,sclk);
Ans:d1=15,d2=15,d3=15,d4=15,d5=15

Anyone know what's happened for my function here?

[Walter Roberson]

No, no-one knows. We have not seen the code for your function

[gdz]

How about the time required for calling a function? How can I find the minimum time difference for two calls?

[Askic V]

You can measure time with tic and toc.

Please have a look at:

https://www.mathworks.com/help/matlab/ref/tic.html

[gdz]

Thank you all of your help

Answer 1

[Askic V]

For loop will be executed in a matter of milliseconds. On the other hand when you call function once at a time, there is a significantly more time difference between calls. So perhaps your input parameters cannot change fast enough in the loop call.

[Walter Roberson]

I agree with Askic V

[gdz]

I have add a pause function inside and it works!!!! Thank you very much.