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Uses BigInt to make BigFloats
Este script não deve ser instalado diretamente. Este script é uma biblioteca de outros scripts para incluir com o diretório meta // @require https://update.greasyfork.org/scripts/563676/1740238/BigFloat.js
BigFloat library was created to avoid IEEE754 floating point numbers, meaning more accurate results and ability to work with larger (actually sometimes smaller) values. BigFloat uses esnext feature called BigInt to implement this solution.
console.log(new BigFloat(0.123456789).add(0.987654321).toNumber({ precision: 9 })) // 1.11111111
console.log(new BigFloat(0.1).add(0.2).multiply(3).toNumber()) // 0.9
// vs using built-in operators
console.log(0.12345678 + 0.987654321) // 1.1111111009999999
console.log((0.1 + 0.2) * 3) // 0.9000000000000001
The value of [Symbol.toStringTag] is "BigFloat" (which is the name of the class).
Note: BigFloat also has stringify instance method, which converts the value to the string.
AcceptableValue is number | (backtick)${number}(backtick) | BigInt | InstanceType<typeof BigFloat>
I wrote ` as (backtick) because markdown doesn't allow me to write template strings is readable way.
Returns the value of the big float as a raw bigint
console.log(new BigFloat('12.34').getRawValue()) // 1234n
Returns the scale of the value
console.log(new BigFloat('12.34').getScale()) // -2
Stringifies big float
console.log(new BigFloat(12.34).stringify()) // '12.34'
console.log(new BigFloat(1).stringify()) // '1.0'
console.log(new BigFloat(1.123456789).stringify()) // '1.123' (default precision is 3)
console.log(new BigFloat(1.123456789).stringify({ precision: 9 })) // '1.123456789'
console.log(new BigFloat(1).stringify({ trailingZero: false })) // '1'
console.log(new BigFloat(0.123).stringify({ headZero: false })) // '.123'
console.log(new BigFloat(1).stringify({ precision: 5, fixedPointNotation: true })) // '1.00000'
Firstly stringfies the number using stringify (with default params) method, and then converts it to number
console.log(new BigFloat('12.34').toNumber()) // 12.34
console.log(new BigFloat('1.0').toNumber()) // 1
console.log(new BigFloat('1.12345689').toNumber()) // 0.123 (default precision is 3)
console.log(new BigFloat('1.12345689').toNumber({ precision: 9 })) // 1.123456789
console.log(new BigFloat('1.1').add('2.2').toNumber()) // 3.3
console.log(new BigFloat('1.1').subtract('2.2').toNumber()) // -1.1
console.log(new BigFloat('3.333').multiply('3.333').toNumber({ precision: 6 })) // 11.108889
console.log(new BigFloat('3.333').divide('9', 10).stringify({ precision: 10 })) // 0.3703333333