> If you really want real numbers passing them as decimal string is actually sensible. Hexadecimal, if so. Nearly any decent modern language and runtime can it

> If you really want real numbers passing them as decimal string is actually sensible. Hexadecimal, if so. Nearly any decent modern language and runtime can it. $ python >>> import math >>> math.pi.hex() '0x1.921fb54442d18p+1' This gives exact value without any rounding effects and conversion cost. (I donʼt count decimal floating-point as it is quite rare and its application is faint. In overwhelming most of cases, fixed point is better.)