@sega-so/sega-sdk/lib/sega/cpmm/curve/calculator.js

An SDK for building applications on top of SEGA.

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ie=s(require("bn.js")),re=new ie.default(1e6);function mt(n,e,t){return n.mul(e).add(t).sub(new ie.default(1)).div(t)}function Ie(n,e,t){return n.mul(e).div(t)}var q=class{static tradingFee(e,t){return mt(e,t,re)}static protocolFee(e,t){return Ie(e,t,re)}static fundFee(e,t){return Ie(e,t,re)}};var ne=(t=>(t[t.Floor=0]="Floor",t[t.Ceiling=1]="Ceiling",t))(ne||{}),oe=class{static validate_supply(e,t){if(e.isZero())throw Error("tokenAmount0 is zero");if(t.isZero())throw Error("tokenAmount1 is zero")}static swap(e,t,r,o){let u=q.tradingFee(e,o),c=e.sub(u),{destinationAmountSwapped:a}=_.swapWithoutFees(c,t,r);return{newSwapDestinationAmount:r.sub(a),sourceAmountSwapped:e,destinationAmountSwapped:a,tradeFee:u}}static swapBaseOut({poolMintA:e,poolMintB:t,tradeFeeRate:r,baseReserve:o,quoteReserve:u,outputMint:c,outputAmount:a}){let[G,P,se,ae,dt]=t.address===c.toString()?[o,u,e.decimals,t.decimals,e.address]:[u,o,t.decimals,e.decimals,t.address],j=new D.default(P.toString()).div(h(10,ae)).div(new D.default(G.toString()).div(h(10,se))),M=a.gte(P)?P.sub(new U.default(1)):a,Ne=P.sub(M),z=te(G.mul(M),Ne),H=te(z.mul(new U.default(1e6)),new U.default(1e6).sub(r)),Re=H.sub(z),Fe=new D.default(M.toString()).div(h(10,ae)).div(new D.default(H.toString()).div(h(10,se))),De=j.isZero()?0:Fe.sub(j).div(j).abs().toNumber();return{amountRealOut:M,amountIn:H,amountInWithoutFee:z,tradeFee:Re,priceImpact:De}}};0&&(module.exports={CurveCalculator,RoundDirection});
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