Money as float has problems

A float is a terrible idea for financial stuff, it’s not allowed in the financial sectors in the real world due to the dynamic precision of the mantisse.
With a single precision float in the most ideal circumstances this gives imprecisions of
0.001 above 16,777.216
0.002 above 33,554.432
0.004 above 67,108.864
.
.
.
2097.152 above 35,184,372,088.832 (35.2 Bil)
etc. (always times 2)

At some point the precision is too large for a single item to be bought/sold. Maybe use a signed long/int64, for this? It would roll over after 9,223,372,036,854,775,808 when using 3 decimals it will roll over at 9,2 quadrillion wouldn’t that be better? At that point nothing would make a dent into it maybe after hardcapping it?

There might be other things you would have done to mitigate the precision problem but i don’t know since it’s not in the patch notes.