4 examples of 'javascript division round up' in JavaScript

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11function roundOne(decimalNumber) {
12 return roundTo(decimalNumber, 1);
13}
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2527BN.prototype.divRound = function divRound (num) {
2528 var dm = this.divmod(num);
2529
2530 // Fast case - exact division
2531 if (dm.mod.isZero()) return dm.div;
2532
2533 var mod = dm.div.negative !== 0 ? dm.mod.isub(num) : dm.mod;
2534
2535 var half = num.ushrn(1);
2536 var r2 = num.andln(1);
2537 var cmp = mod.cmp(half);
2538
2539 // Round down
2540 if (cmp < 0 || (r2 === 1 && cmp === 0)) return dm.div;
2541
2542 // Round up
2543 return dm.div.negative !== 0 ? dm.div.isubn(1) : dm.div.iaddn(1);
2544};
61export function roundDown(
62 value: BigNumber.Value,
63 decimals: number = 2,
64 roundingTolerance: number = 0
65): BigNumber {
66 if (roundingTolerance) {
67 value = new BigNumber(value).decimalPlaces(
68 decimals + roundingTolerance,
69 BigNumber.ROUND_HALF_DOWN
70 )
71 }
72 return new BigNumber(value).decimalPlaces(decimals, BigNumber.ROUND_DOWN)
73}
4function round(v, n) {
5 return +(Math.round(v + 'e+' + n) + 'e-' + n);
6}

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