[antonymoose]

Having done HFT / low-latency in C++ with a browser based (read: JavaScript) management front-end: Go ahead and use integer cents everyone. It’s practically an industry standard and it works just fine. Anything else is a worse compromise.

[lxgr]

If you’re only trading in USD and other two-decimal currencies it can work fine, yes. For anything else, it’s much worse as also detailed in TFA.

[notpushkin]

It is fine as long as you don’t cross any edge cases (crypto, or more recently stuff like AI token pricing) and don’t forget to account for third party quirks (e.g. Stripe’s zero-decimal currencies: https://docs.stripe.com/currencies#zero-decimal).

[lxgr]

JPY not having any minor units is arguably not a “third party quirk” but just how the currency works. The same goes for various three decimal digit currencies.

[DetroitThrow]

Agree with this, working from HFT to payments to account management in the past.

You can have the blockchain team be an expert in converting integer cents, or the forex team be an expert in sub-cent conversions. You don't want to require _every team_ to have expertise in float math, by default.

[lxgr]

Big decimals are widely available and don’t require any expertise but avoid many of the footguns of implied decimal integers.