calc-extension

The extension strives to be useful for everybody quickly needing brief or mid-long calculations: in daily “browser” life, as a mathematician, or as a programmer - there is support for all needs.

Formulas can be entered in the typical mathematician's or programmer's syntax - both is understood. There is also support for lengthy sessions (saving/restoring, exporting to clipboard, etc).

The original motivation was to experiment with a Pratt parser. There is already a much richer expression syntax than in most languages (implicit multiplication signs, no braces necessary for function calls), and it would be simple to extend the syntax to a more full-blown “language”. (In fact, earlier versions of calc-extension had a simpler syntax. Readers interested in the parser implementation can check data/js/parser.js).

After installing calc-extension, it can be used as follows.