def METHOD_NAME(h, l, s):
    if s == 0.0: return l, l, l
    if l <= 0.5: m2 = l * (1.0+s)
    else: m2 = l+s-(l*s)
    m1 = 2.0*l - m2
    return (_v(m1, m2, h+ONE_THIRD), _v(m1, m2, h), _v(m1, m2, h-ONE_THIRD))