@dolomite-exchange/dolomite-margin/dist/src/modules/DolomiteMarginMath.js

Ethereum Smart Contracts and TypeScript library used for the DolomiteMargin trading protocol

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const Constants_1 = require("../lib/Constants");
class DolomiteMarginMath {
    static getPartialRoundHalfUp(target, numerator, denominator) {
        const value = target.abs()
            .times(numerator);
        const halfUp = value.mod(denominator)
            .gte(denominator.minus(1)
            .dividedToIntegerBy(2)
            .plus(1))
            ? 1
            : 0;
        const result = value.dividedToIntegerBy(denominator)
            .plus(halfUp);
        if (target.lt(Constants_1.INTEGERS.ZERO)) {
            return result.negated();
        }
        return result;
    }
    static getPartialRoundUp(target, numerator, denominator) {
        const result = target
            .abs()
            .times(numerator)
            .minus('1')
            .dividedToIntegerBy(denominator)
            .plus('1');
        if (target.lt(Constants_1.INTEGERS.ZERO)) {
            return result.negated();
        }
        return result;
    }
    static getPartial(target, numerator, denominator) {
        return target.times(numerator).dividedToIntegerBy(denominator);
    }
    static weiToPar(valueWei, index) {
        const base = Constants_1.INTEGERS.INTEREST_RATE_BASE;
        if (valueWei.lt(Constants_1.INTEGERS.ZERO)) {
            return DolomiteMarginMath.getPartialRoundHalfUp(valueWei.negated(), base, index.borrow.times(base)).negated();
        }
        return DolomiteMarginMath.getPartialRoundHalfUp(valueWei, base, index.supply.times(base));
    }
    static parToWei(valueWei, index) {
        const base = Constants_1.INTEGERS.INTEREST_RATE_BASE;
        if (valueWei.lt(Constants_1.INTEGERS.ZERO)) {
            return DolomiteMarginMath.getPartialRoundHalfUp(valueWei.negated(), index.borrow.times(base), base).negated();
        }
        return DolomiteMarginMath.getPartialRoundHalfUp(valueWei, index.supply.times(base), base);
    }
}
exports.default = DolomiteMarginMath;
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