bigfx

BigFX is a JavaScript decimal fixed-point number library with unlimited size, based on the native BigInt. It supports up to 15 digits of fractional precision, and is internally stored as a BigInt scaled by a factor of 1e+15. BigFX can work on both Node.js and the browser.

Installation

Using NPM:

npm install bigfx

On the browser:

<script src="https://raw.githubusercontent.com/nirvanasupermind/bigfx/main/bigfx.min.js" type="text/javascript"></script>

Example

var BigFX = require("bigfx");
console.log(new BigFX(36.9).add(45).mul(94).toFixed(6)); // 7698.600000
console.log(new BigFX(9007199254740991n).add(2).toString()); // 9007199254740993
console.log(BigFX.PI.neg().cos().toString()); // -1

API

• constructor() - Creates a BigFX object equal to 0
• constructor(number) - Creates a BigFX object from a number (precision may be lost)
• constructor(bigint) - Creates a BigFX object from a BigInt
• constructor(bigfx) - Creates a BigFX object from another BigFX object
• clone() - Returns a clone of a BigFX object
• neg() - Returns negation of a BigFX object
• add(other) - Returns addition of two BigFX objects (converts other if needed)
• sub(other) - Returns subtraction of two BigFX objects (converts other if needed)
• mul(other) - Returns multiplication of two BigFX objects (converts other if needed)
• div(other) - Returns division of two BigFX objects (converts other if needed)
• mod(other) - Returns modulo of two BigFX objects (converts other if needed)
• and(other) - Returns bitwise AND of two BigFX objects (converts other if needed, only works if both arguments are integers)
• or(other) - Returns bitwise OR of two BigFX objects (converts other if needed, only works if both arguments are integers)
• xor(other) - Returns bitwise XOR of two BigFX objects (converts other if needed, only works if both arguments are integers)
• shl(other) - Returns left-shift of two BigFX objects (converts other if needed, only works if other is an integer)
• shr(other) - Returns right-shift of two BigFX objects (converts other if needed, only works if other is an integer)
• exp() - Returns e raised to the power of a BigFX object
• log() - Returns natural logarithm of a BigFX object
• pow(other) - Returns exponentiation of two BigFX objects (converts other if needed)
• sqrt() - Returns the square root of a BigFX object
• sin() - Returns the sine of a BigFX object
• cos() - Returns the cosine of a BigFX object
• tan() - Returns the tangent of a BigFX object
• lt(other) - Checks if a BigFX object is less than another BigFX object
• le(other) - Checks if a BigFX object is less than or equal to another BigFX object
• gt(other) - Checks if a BigFX object is greater than another BigFX object
• ge(other) - Checks if a BigFX object is greater than or equal to another BigFX object
• eq(other) - Checks if a BigFX object is equal to another BigFX object
• ne(other) - Checks if a BigFX object is not equal to another BigFX object
• toNumber() - Converts a BigFX object to a number
• toBigInt() - Converts a BigFX object to a BigInt
• toScaledBigInt() - Converts a BigFX object to a BigInt scaled up by a factor of 1e+15 (the internal representation)
• toString(radix = 10)- Converts a BigFX object to a string in the specified radix
• toFixed(fractionDigits = 0)- Converts a BigFX object to a string with the specified number of fraction digits
• toExponential()- Converts a BigFX object to a string in scientific notation format
• static ZERO- A BigFX object with a value of 0
• static ONE- A BigFX object with a value of 1
• static PI- A BigFX object with a value of π
• static E- A BigFX object with a value of e
• static random()- Creates a BigFX object with a pseudo-random value between 0 and 1