sknano.structures.compute_d

sknano.structures.compute_d(*Ch)

Compute $d=\gcd{(n, m)}$

$d$ is the Greatest Common Divisor of $n$ and $m$.

Parameters:

*Ch : {tuple or ints}

Either a 2-tuple of ints or 2 integers giving the chiral indices of the nanotube chiral vector $\mathbf{C}_h = n\mathbf{a}_1 + m\mathbf{a}_2 = (n, m)$.

Returns:

gcd : int

Greatest Common Divisor of $n$ and $m$