@scom/scom-uniswap-v3-contract v0.1.1

Contract Addresses

https://docs.uniswap.org/contracts/v3/reference/deployments

Uniswap's own Deployer

0x6c9fc64a53c1b71fb3f9af64d1ae3a4931a5f4e9

Notes on calling uniswap router swap function:

1. Prices are always based on token0 (token with smaller address); independent of in-token / out-token direction.
2. sqrtPriceLimitX96 can be set to 0 to trade at the slot0 price
3. sqrtPriceLimitX96 should be smaller then the slot0 price when swapping from token0 to token1 or highter then the slot0 price for token1 to token0 swaps.
4. ETH input is automatically wrapped.
5. To get native ETH output: 1. set router as the recipient in swap paramters, 2. use router.multicall() with router.unwrapWETH9() as the second call.
6. For ETH input and router.exactOut(): use router.multicall() with router.refundETH() as the second call to get excess ETH back.
7. For multi-hop exactOut, path are reversed (token-out is the first in the list and token-in is the last).

Notes on logarithm

1. log1.0001(X) = log(X) / log(1.0001)
2. log10(big_X) = log10(x*1eY) = Y + log10(x)

Resources

• https://uniswap.org/whitepaper-v3.pdf
• https://github.com/Uniswap/v3-core
• https://github.com/Uniswap/v3-periphery
• https://github.com/Uniswap/swap-router-contracts
• https://docs.uniswap.org/contracts/v3/overview
• https://uniswapv3book.com/