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Exchange Rate
Each aToken is convertible into an ever increasing quantity of the underlying asset, as interest accrues in the market. The exchange rate between a aToken and the underlying asset is equal to:
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exchangeRate = (getCash() + totalBorrows() - totalReserves()) / totalSupply()
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SErc20 / SEther
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function exchangeRateCurrent() returns (uint)
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  • RETURN: The current exchange rate as an unsigned integer, scaled by 1e18.
Solidity
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SErc20 aToken = SToken(0x3FDA...);
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uint exchangeRateMantissa = aToken.exchangeRateCurrent();
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Web3 1.0
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const aToken = SEther.at(0x3FDB...);
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const exchangeRate = (await aToken.methods.exchangeRateCurrent().call()) / 1e18;
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Tip: note the use of call vs. send to invoke the function from off-chain without incurring gas costs.
Last modified 10mo ago
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