*testing.T, shift uint) { n := NewNat().setBig(nb) oldLen := len(n.limbs) n.ShiftRightVarTime(shift) if len(n.limbs) != oldLen { t.Errorf("len(n.limbs) = %d, want %d", len(n.limbs), oldLen) } exp := new(big.Int).Rsh(nb, shift) if n.asBig().Cmp(exp) != 0 { t.Errorf("%v != %v", n.asBig(), exp) } } t.Run(fmt.Sprint(shift-1), func(t *testing.T) { testShift(t, shift-1) }) t.Run(fmt.Sprint(shift), func(t *testing.T) { testShift(t, shift) }) t.Run(fmt.Sprint(shift+1), func(t *testing.T) { testShift(t, shift+1)...