44 lines
1.3 KiB
JavaScript
44 lines
1.3 KiB
JavaScript
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// This example demonstrates how you could integrate support for BigInt
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// in mathjs. It's just a proof of concept, for full support you will
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// have to defined more functions and define conversions from and to
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// other data types.
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const { create, all, factory } = require('../..')
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const math = create(all)
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// we can also add conversions here from number or string to BigInt
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// and vice versa using math.typed.addConversion(...)
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math.import([
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factory('BigInt', ['typed'], function createBigInt ({ typed }) {
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typed.addType({
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name: 'BigInt',
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test: (x) => typeof x === 'bigint' // eslint-disable-line
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})
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return BigInt // eslint-disable-line
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}, { lazy: false }),
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factory('bigint', ['typed', 'BigInt'], function createBigint ({ typed, BigInt }) {
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return typed('bigint', {
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'number | string ': (x) => BigInt(x) // eslint-disable-line
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})
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}),
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factory('add', ['typed'], function createBigIntAdd ({ typed }) {
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return typed('add', {
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'BigInt, BigInt': (a, b) => a + b
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})
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}),
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factory('pow', ['typed'], function createBigIntPow ({ typed }) {
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return typed('pow', {
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'BigInt, BigInt': (a, b) => a ** b
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})
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})
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])
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console.log(math.evaluate('4349 + 5249'))
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console.log(math.evaluate('bigint(4349) + bigint(5249)'))
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console.log(math.evaluate('bigint(4349) ^ bigint(5249)'))
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