How to use bignumber.js

bundle.js

GitHub: NikPeg/swapp

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//----------------------------- EDITABLE CONFIG DEFAULTS -------------------------------


// The default values below must be integers within the inclusive ranges stated.
// The values can also be changed at run-time using BigNumber.set.

// The maximum number of decimal places for operations involving division.
DECIMAL_PLACES = 20,                     // 0 to MAX

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bundle.js

GitHub: NikPeg/swapp

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// The maximum number of significant digits of the result of the exponentiatedBy operation.
// If POW_PRECISION is 0, there will be unlimited significant digits.
POW_PRECISION = 0,                       // 0 to MAX

// The format specification used by the BigNumber.prototype.toFormat method.
FORMAT = {
  prefix: '',
  groupSize: 3,
  secondaryGroupSize: 0,

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paymentProcessor.js

GitHub: dozer0445/kawpow-pool-gpn

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	logger.debug('PP> worker.sent = %s', worker.sent.toString(10));
	worker.balanceChange = BigNumber.min(worker.balance, worker.sent).multipliedBy(new BigNumber(-1));
	logger.debug('PP> worker.balanceChange = %s', worker.balanceChange.toString(10));
} else {
	logger.debug('PP> Worker %s have not reached minimum payout threshold %s', w, minPayment.toString(10));
	worker.balanceChange = BigNumber.max(toSend.minus(worker.balance), new BigNumber(0));
	logger.debug('PP> worker.balanceChange = %s', worker.balanceChange.toString(10));
	worker.sent = new BigNumber(0);
	logger.debug('PP> worker.sent = %s', worker.sent.toString(10));
	if (worker.balanceChange > 0) {

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Router.spec.js

GitHub: hackingbeauty/minimally-viable-dex

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const tokenAPercentIncrease = amountA.mul(totalSupply).div(reserve0);
const tokenBPercentIncrease = amountB.mul(totalSupply).div(reserve1);

const bnTokenAPercentIncrease = new BigNumber(ethers.utils.formatUnits(tokenAPercentIncrease));
const bnTokenBPercentIncrease = new BigNumber(ethers.utils.formatUnits(tokenBPercentIncrease));
const minimum = BigNumber.min(bnTokenAPercentIncrease, bnTokenBPercentIncrease);
const formattedMininum = minimum.toFormat();
const formattedLiquidity = ethers.utils.formatUnits(liquidity);

expect(formattedLiquidity).to.equal(formattedMininum);

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generation.js

GitHub: dlcksdud/jiff-master-clone

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}


// Override
baseGeneration.generateUniform = function (test, options, max) {
  max = determineMax(test, options.party_count, options.integer_digits, options.decimal_digits, max);
  var wholeNum = BigNumber.random().times(max).floor();
  var deciNum = wholeNum.div(new BigNumber(10).pow(options.decimal_digits));
  return Math.random() < 0.5 ? deciNum : deciNum.times(-1);
};
baseGeneration.generateNonZeroUniform = function (test, options, max) {

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export-excel.js

GitHub: MinionsHero/web3-helper

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    const index = data.columns.findIndex(col => col.key === key);
    // statisticsRow[key] = {
    //   formula: `SUM(${getArea(index, index + 1, recordRowStart, recordRowEnd)})`,
    //   result: BigNumber.sum(...records.map(r => new BigNumber((r[key] as any) || 0))).toNumber()
    // }
    statisticsRow[key] = bignumber_js_1.default.sum(...records.map(r => new bignumber_js_1.default(r[key] || 0))).toNumber();
}
if (statistics.length > 0) {
    worksheet.addRow(statisticsRow, 'i'); // 添加Footer row
}

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stringify.js

GitHub: Mickey-Meng/zhuji_web

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            v,          // The member value.
            length,
            mind = gap,
            partial,
            value = holder[key],
            isBigNumber = value != null && (value instanceof BigNumber || BigNumber.isBigNumber(value));


// If the value has a toJSON method, call it to obtain a replacement value.


        if (value && typeof value === 'object' &&

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collection.js

GitHub: netangsoft/netang-utils

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 * 返回给定键的最小值
 */
min(key) {
    // 获取值
    const nums = getNums.call(this, key)
    return nums.length ? BigNumber.minimum(...nums).toNumber() : 0
}

/**
 * 方法确定集合中是否存在给定键

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collection.js

GitHub: netangsoft/netang-utils

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 * 返回给定键的最大值
 */
max(key) {
    // 获取值
    const nums = getNums.call(this, key)
    return nums.length ? BigNumber.maximum(...nums).toNumber() : 0
}

/**
 * 返回给定键的最小值

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tokenRouter.js

GitHub: thetatoken/theta-infrastructure-ledger-explorer

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if (tokenId == null) {
  const map = {};
  result.forEach(info => {
    const address = info.holder;
    if (map[address] === undefined) map[address] = 0;
    map[address] = BigNumber.sum(new BigNumber(map[address]), new BigNumber(info.amount)).toFixed();
  })
  holders = Object.keys(map).map(address => ({
    address: address,
    amount: map[address]

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uniswap.v3.utils.js

GitHub: LaTribuWeb3/dex-history-fetcher

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 */
function get_dx_slippage(currentTick, tickSpacing, sqrtPriceX96, liquidity, tokenDecimals) {
    const base = new BigNumber(1.0001);
    const decimalFactor = new BigNumber(10).pow(tokenDecimals);
    let dx = new BigNumber(0);
    BigNumber.config({ POW_PRECISION: 10 });
    const _96bits = new BigNumber(2).pow(new BigNumber(96));
    let currSqrtPrice = new BigNumber(sqrtPriceX96).div(_96bits); 
    let currTick = getNextLowerTick(Number(currentTick), tickSpacing);

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util.js

GitHub: meterio/meter-stratum-pool

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 More info: https://en.bitcoin.it/wiki/Target
 */


exports.bignumFromBitsBuffer = function (bitsBuff) {
  var numBytes = bitsBuff.readUInt8(0);
  var bigBits = new BigNumber("0x" + bitsBuff.slice(1).toString("hex"));
  var target = bigBits.times(
    new BigNumber(2).pow(new BigNumber(8).times(numBytes - 3))
  );
  return target;

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