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Merge pull request #4180 from mempool/junderw/fix-nbits-calculations

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Fix: calcBitsDifference regtest fix
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softsimon 2023-08-18 17:27:25 +02:00 committed by GitHub
commit f36ee36576
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1 changed files with 2 additions and 2 deletions
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4
backend/src/api/difficulty-adjustment.ts
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@ -32,13 +32,13 @@ export interface DifficultyAdjustment {
export function calcBitsDifference(oldBits: number, newBits: number): number {
// Must be
// - integer
// - highest exponent is 0x1f, so max value (as integer) is 0x1f0000ff
// - highest exponent is 0x20, so max value (as integer) is 0x207fffff
// - min value is 1 (exponent = 0)
// - highest bit of the number-part is +- sign, it must not be 1
const verifyBits = (bits: number): void => {
if (
Math.floor(bits) !== bits ||
bits > 0x1f0000ff ||
bits > 0x207fffff ||
bits < 1 ||
(bits & 0x00800000) !== 0 ||
(bits & 0x007fffff) === 0