| 1 |
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| 2 | /**
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| 3 | * Bitwise not
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| 4 | * @param {BigNumber} x
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| 5 | * @return {BigNumber} Result of ~`x`, fully precise
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| 6 | *
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| 7 | */
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| 8 | module.exports = function bitNot (x) {
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| 9 | if (x.isFinite() && !x.isInteger()) {
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| 10 | throw new Error('Integer expected in function bitNot')
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| 11 | }
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| 12 |
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| 13 | const BigNumber = x.constructor
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| 14 | const prevPrec = BigNumber.precision
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| 15 | BigNumber.config({ precision: 1E9 })
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| 16 |
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| 17 | let result = x.plus(new BigNumber(1))
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| 18 | result.s = -result.s || null
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| 19 |
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| 20 | BigNumber.config({ precision: prevPrec })
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| 21 | return result
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| 22 | }
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