Calculate Pi

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CLI

You can calculate Pi from your command line, using our simple npm package.

Manual

Copy the following code from index.js into a file called index.js on your computer.

function* pi() {
    let q = 1n;
    let r = 180n;
    let t = 60n;
    let i = 2n;

    while (true) {
        let digit = ((i * 27n - 12n) * q + r * 5n) / (t * 5n);

        yield Number(digit);

        let u = i * 3n;
        u = (u + 1n) * 3n * (u + 2n);
        r = u * 10n * (q * (i * 5n - 2n) + r - t * digit);
        q *= 10n * i * (i++ * 2n - 1n);
        t *= u;
    }
}

let gen = pi();
let t = 0;

setInterval(() => {
    t += 1;

    console.log(`Digit ${t}: ${gen.next().value}`);
}, 1);

Then in a terminal run the following command in the directory where the code is located.

node index.js

Once you run the command, the digits should begin printing in the terminal.

wdhdev/pi

Calculate Pi

Run

CLI

Manual