Catalog app · RISC-V VM

Run numbat in the browser

A statically typed language and calculator for scientific computations with physical units.

Try it live

Nothing is downloaded until you press Run.

catalog app

Evaluate an expression

Installs numbat 1.23.0 from the signed catalog (every chunk is verified before it is written), then runs the commands below in the VM's shell.

bash

numbat --version
numbat --no-prelude -e '2 + 3 * 4'

loading…

Expected output

$ numbat --version
numbat 1.23.0
$ numbat --no-prelude -e '2 + 3 * 4'
14

What it is

numbat checks dimensions at compile time and converts units automatically, so 3 km / 20 min -> mph gives a speed and adding a length to a time is a type error. It ships a large library of units and constants.

Package facts

version: 1.23.0
runs on: RISC-V VM (elf-app, riscv64gc-linux-musl)
download: 2.6 MB compressed · 1 file
command: numbat
requires: nothing else — a static binary
license: MIT OR Apache-2.0 (upstream)
upstream: github.com/sharkdp/numbat
categories: Math
catalog: generation 12, Ed25519-signed

Install and run it from your page

With the SDK, installApp resolves numbat in the signed index, fetches its content-addressed chunks from the CDN, verifies each one and writes the files into the VM. Details in Installing catalog apps.

javascript

import { createNano } from "@userland-run/nano-sdk";

const nano = await createNano({ image: { wasm: "/nano/console.wasm" }, ramMB: 512 });
await nano.installApp("numbat"); // signature-verified, cached in OPFS

const r = await nano.shExec("numbat --version");
console.log(r.stdout);

Typical usage of the upstream command-line tool: