2075

Collection of reference material to do fixed point arithmetic on substrate based chains.

overview

How can I do math on floating point values in substrate runtime. As a simple example imagine I want to keep track of an interest rate in a decentralized finance application. I can prototype by using the percentage as an integer:

  let rate = 2;
  let dividend = capital * rate / 100;

But what if my interest rate is 2.5% or 2.4554%?

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	"nonce": "Index",
	"consumers": "RefCount",
	"providers": "RefCount",
	"data": "AccountData"
	},