区块链钱包交易所系统开发(开发案例)丨数字货币交易所钱包系统开发(方案项目)源码
DApp是(Decentralized Application)的缩写,中文直译为去中心化应用,也可以理解为分布式应用。
区块链作为一种新的信息与网络技术,运用加密技术、分布式网络和共识机制来保证网络中每个节点所记录的信息真实有效。区块链正在不断渗透到各行各业中,已经展现出良好的发展态势。
DApp是指分布式应用程序(Decentralized Application),是一种基于区块链技术的应用程序,运行在分布式计算网络上,具有去中心化、安全、不可篡改等特点。Unlike traditional centralized applications,DApp does not rely on a single server or organization for management and operation,but achieves decentralized management and operation through blockchain technology and smart contracts.
function computeSwapStep(
uint160 sqrtRatioCurrentX96,
uint160 sqrtRatioTargetX96,
uint128 liquidity,
int256 amountRemaining,
uint24 feePips
)
internal
pure
returns(
uint160 sqrtRatioNextX96,
uint256 amountIn,
uint256 amountOut,
uint256 feeAmount
)
{
bool zeroForOne=sqrtRatioCurrentX96>=sqrtRatioTargetX96;
bool exactIn=amountRemaining>=0;
...
bool max=sqrtRatioTargetX96==sqrtRatioNextX96;
//get the input/output amounts
if(zeroForOne){
//计算amountIn/amountOut的值
amountIn=max&&exactIn
?amountIn
:SqrtPriceMath.getAmount0Delta(sqrtRatioNextX96,sqrtRatioCurrentX96,liquidity,true);
amountOut=max&&!exactIn
?amountOut
:SqrtPriceMath.getAmount1Delta(sqrtRatioNextX96,sqrtRatioCurrentX96,liquidity,false);
}else{
...
}
if(!exactIn&&amountOut>uint256(-amountRemaining)){
amountOut=uint256(-amountRemaining);
}
if(exactIn&&sqrtRatioNextX96!=sqrtRatioTargetX96){
feeAmount=uint256(amountRemaining)-amountIn;
}else{
feeAmount=FullMath.mulDivRoundingUp(amountIn,feePips,1e6-feePips);
}