Given the function

void $f(n,m)$ :

input: two integers $n,m,$ both of which are in form of $2^p$

ilarr$1$;

jlarrm;

klarr$0$;

while $ilarr{i}^{**}2$;

klarrk$+ij>1$jlarr$\frac{j}{2}$;

klarrk$+j$;kki :

$ilarr{i}^{**}2$;

klarrk$+i$

while $j>1$ :

jlarr$\frac{j}{2}$;

klarrk$+j$;

return $k$;

$a.$ Calculate the value $ofk.$

$b.$ Compute the computational complexity $of$ the function and express your result using Big$-Oh$ notation.

$(1$ mark$)$