'Return string for non-decade locations'

def _non_decade_format(self, sign_string, base, fx, usetex):

    if usetex:
        return (u'$%s%s^{%.2f}$' % (sign_string, base, fx))
    else:
        return (u'$%s$' % _mathdefault((u'%s%s^{%.2f}' % (sign_string, base, fx))))
