matlab : sample Gauss Elimination

A = [ 2 1 -1 8; -3 -1 2 -11; -2 1 2 -3]

m = 3
n = 4

i = 1

adds=0 %just counting the additions
mults=0 % just counting the multiplications

while i < m
        j = i+1
        while j <= m
                temp = -(A(j,i)/A(i,i))
                k = i
                while k <= n
                        A(j,k) = A(j,k) + A(i,k)*temp
                        adds=adds+1
                        mults=mults+1
                        k=k+1
                end
                j=j+1
        end
        i=i+1
end
A