Why does the code shows match values and mismatch values??

one_c=0;
tem_h=-100;
tem_L=100;
high_p=0;
low_pr=0;
o_pr=0;
for p = 1:no_ofbits
    for m = 1:process_g
        pin=m+(p-1)*process_g;
        o_p=o_p+quick(pin);
        if strong(pin)==1
            one_c=one_c+1;
            if v(pin)>=tem_h
                tem_h=v(pin);
                high_p=pin;%pointer is for diagnostic purposes
            end
            if v(pin)<=tem_L
                tem_L=v(pin);
                low_p=pin;%printer is for diagnostic purposes
            end
        end
    end
end


am = temp_h + temp_L;
am = (ad/2); 

a1 = (am/5); 
b1=t(win(1)); 
verify(1)=a1;
verify(2)=b1;
verify(3)=o_p;

I am trying to run this code. everytime I run the code matrix verify shows (1), (2) columns matched and (3) which is what I want as 0. But when I run the same code everytime during 8th or 11th time it shows a mismatch between (1), (2). I have run this code many times. but still it shows correct result, but during 7times and 8th times it fails. I am trying it extremely hard to understand why is it showing a mismatch and then again match after that.

Can someone please help me in this? I am not able to list out the reason why is it behaving correct in some runs and changes output after 8th or 9th run. Kindly help

[Ayesha Punjabi]

Output of the above code

verify =

2.2416 2.2416 0

verify =

0.9565 0.9565 0

verify =

1.5510 1.5510 0

verify =

2.5810 2.5810 0

verify =

3.8400 3.8400 0

verify =

1.1209 1.1209 128.0000

[Walter Roberson]

We are missing inputs and/or functions.

With the mention of "pin" I wonder if this is talking to a hardware device?

[Ayesha Punjabi]

no_ofbits = 20;

p_gain = 32;

pin=m+(p-1)*p_gain;

[Walter Roberson]

Undefined function or variable 'process_g'.

Undefined function or variable 'o_p'.

Undefined function 'quick' for input arguments of type 'double'.

Undefined function or variable 'strong'.

Undefined function or variable 'v'.