ogham/rust-number-prefix

The rust-number-prefix library helps developers format numbers with familiar prefixes like "kilo," "mega," or "giga." Instead of showing a user a raw number like 8,542 bytes, the library converts it into a more readable format like "8.5 kB." It takes large or unwieldy numbers and turns them into the kind of clean, human-friendly values you'd expect to see in a file explorer or a data dashboard. At its core, the library works by repeatedly dividing a number until it lands in a readable range, then attaching the correct prefix. You can choose between decimal prefixes (which divide by 1,000) or binary prefixes (which divide by 1,024 and are commonly used for digital storage). If a number is too small to need a prefix, the library simply returns the original value. It also handles the reverse: it can parse strings like "7.05 GiB" back into the underlying number and prefix, making it useful for reading user input or configuration values. Developers building applications that display file sizes, network speeds, or other large measurements would reach for this. For example, someone writing a file manager might use it to show that a video takes up "4.2 GiB" rather than listing 4,509,715,660 bytes. Similarly, a data dashboard could use it to present network traffic as "12 megabits per second" instead of a long raw figure. It can output either the abbreviated symbols (like "kB") or the full word (like "kilobytes"), giving developers flexibility in how they present information. One notable detail is that the library supports environments without the Rust standard library (no_std), meaning it can run on very constrained systems like embedded devices. It also recognizes that small numbers often need different handling than large ones, a file that's 705 bytes should display as "705 bytes," not "0.7 kB", so it lets developers special-case those values.