the description of Copy() method does not correspond to reality

[lexand]

Method Copy() says // Copy returns a copy of decimal with the same value and exponent, but a different pointer to value.

Got:
Simple test show that pointers are actually equal

func TestDecimal_Copy(t *testing.T) {
	a := decimal.RequireFromString("1")
	b := a.Copy()

	refA := reflect.ValueOf(a)
	refB := reflect.ValueOf(b)

	ptrA := refA.Field(0).Pointer()
	ptrB := refB.Field(0).Pointer()

	assert.NotEqual(t, ptrA, ptrB)
}

Your test for Copy() method does not check inequality of pointers

func TestCopy(t *testing.T) {
	origin := New(1, 0)
	cpy := origin.Copy()

	if cpy.Cmp(origin) != 0 {
		t.Error("expecting copy and origin to be equals, but they are not")
	}

	//change value
	cpy = cpy.Add(New(1, 0))

	if cpy.Cmp(origin) == 0 {
		t.Error("expecting copy and origin to have different values, but they are equal")
	}
}

Expect:
values have different pointers

$ go version
go version go1.20.5 linux/amd64

[mwoss]

Thanks for the report! Issue is fixed by #278