if q.d.Dec != nil {
		return q.d.Dec.Cmp(inf.NewDec(y, inf.Scale(0)))
	}
	return q.i.Cmp(int64Amount{value: y})
}

// Neg sets quantity to be the negative value of itself.
func (q *Quantity) Neg() {
	q.s = ""
	if q.d.Dec == nil {
		q.i.value = -q.i.value
		return
	}
	q.d.Dec.Neg(q.d.Dec)
}

// Equal checks equality of two Quantities. This is useful for testing with
// cmp.Equal.

//       both ops are in the same block.
(CMPconst [0] z:((ADD|AND|ANDN|OR|SUB|NOR|XOR) x y)) && v.Block == z.Block => (CMPconst [0] convertPPC64OpToOpCC(z))
(CMPconst [0] z:((NEG|CNTLZD|RLDICL) x)) && v.Block == z.Block => (CMPconst [0] convertPPC64OpToOpCC(z))
// Note: ADDCCconst only assembles to 1 instruction for int16 constants.

(RotateLeft64 x (Neg(64|32|16|8) (And(64|32|16|8) y (Const(64|32|16|8) [c])))) && c&63 == 63 => (RotateLeft64 x (Neg(64|32|16|8) <y.Type> y))
(RotateLeft32 x (Neg(64|32|16|8) (And(64|32|16|8) y (Const(64|32|16|8) [c])))) && c&31 == 31 => (RotateLeft32 x (Neg(64|32|16|8) <y.Type> y))
(RotateLeft16 x (Neg(64|32|16|8) (And(64|32|16|8) y (Const(64|32|16|8) [c])))) && c&15 == 15 => (RotateLeft16 x (Neg(64|32|16|8) <y.Type> y))

// Returns true if the provided padding in the composite op can be satisfied 
// by SAME or VALID tensorflow padding.
def HasSameOrValidPadding: Constraint<Neg<HasCustomPadding.predicate>>;

// See the function doc in the header file.
def GetPadOpAttr: NativeCodeCall<"GetPadOpAttr($_builder, (*$0.begin()).getDefiningOp<mhlo::CompositeOp>())">;

			for i := 0; i < 100; i++ {
				j := rand.Int63()
				q := *NewScaledQuantity(j, Scale(k))
				if asDec {
					q.AsDec()
				}

				b := q.DeepCopy()
				b.Neg()
				b.Neg()
				if b.Cmp(q) != 0 {
					t.Errorf("double negation did not cancel: %s", &q)
				}
			}
		}
	}
}

func TestQuantityAsApproximateFloat64(t *testing.T) {
	table := []struct {

func atoi[bytes []byte | string](s bytes) (x int, err error) {
	neg := false
	if len(s) > 0 && (s[0] == '-' || s[0] == '+') {
		neg = s[0] == '-'
		s = s[1:]
	}
	q, rem, err := leadingInt(s)
	x = int(q)
	if err != nil || len(rem) > 0 {
		return 0, errAtoi
	}
	if neg {
		x = -x
	}
	return x, nil
}

  // CHECK: %[[NEG:.*]] = "tf.Neg"(%arg0) {device = ""}
  // CHECK: %[[UNPACK:.*]]:2 = "tf.Unpack"(%[[NEG]]) <{axis = 1 : i64}> {device = ""}
  %unpacked:2 = "tf.Unpack"(%arg0) {axis = 1 : i64, device = ""}
                : (tensor<?x2xf32>) -> (tensor<?xf32>, tensor<?xf32>)
  %0 = "tf.Neg"(%unpacked#0): (tensor<?xf32>) -> tensor<?xf32>
  %1 = "tf.Neg"(%unpacked#1): (tensor<?xf32>) -> tensor<?xf32>

		x := NewFloat(5.0)
		y := new(Float).Neg(x)
		want := NewFloat(0.0)
		if mode == ToNegativeInf {
			want.Neg(want)
		}
		got := new(Float).SetMode(mode)
		got.Add(x, y)
		if got.Cmp(want) != 0 || got.neg != (mode == ToNegativeInf) {
			t.Errorf("%s:\n\t     %v\n\t+    %v\n\t=    %v\n\twant %v",
				mode, x, y, got, want)
		}

// returns the offset of the first character.
func (d Duration) format(buf *[32]byte) int {
	// Largest time is 2540400h10m10.000000000s
	w := len(buf)

	u := uint64(d)
	neg := d < 0
	if neg {
		u = -u
	}

	if u < uint64(Second) {
		// Special case: if duration is smaller than a second,
		// use smaller units, like 1.2ms
		var prec int
		w--
		buf[w] = 's'
		w--

		nil,
		{0},
		{1},
		{0, 1, 2, 3, 4},
		{4, 3, 2, 1, 0},
		{4, 3, 2, 1, 0, 0, 0, 0},
	} {
		var z Int
		z.neg = true
		got := z.SetBits(test)
		want := norm(test)
		if got.abs.cmp(want) != 0 {
			t.Errorf("SetBits(%v) = %v; want %v", test, got.abs, want)
		}

		if got.neg {
			t.Errorf("SetBits(%v): got negative result", test)
		}

		bits := nat(z.Bits())
		if bits.cmp(want) != 0 {