Numbers lose precision

[mikol]

Consider:

package euler

e = 2.71828182846

When querying this euler.e, we get 2.718281828, which is acceptable according to the JSON spec because implementations are free to limit “the range and precision of numbers accepted.”

However, the spec goes on to say: “Since software that implements IEEE 754-2008 binary64 (double precision) numbers [IEEE754] is generally available and widely used, good interoperability can be achieved by implementations that expect no more precision or range than these provide, in the sense that implementations will approximate JSON numbers within the expected precision.”

So for interoperability, I’d expect more precision – possibly exactly IEEE754.