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There are not many JS libraries in this space that have sane handling for complex numbers and arbitrary precision. I'm not entirely sure, but perhaps NumericJS

• valera_rozuvan 10y ago
  Thanks for your reply. But after trying this library - it doesn't offer precision beyond that which is in native JavaScript. Upon closer inspection [1] you can see that it uses standard Number.toPrecision() function. ECMA-262 only requires a precision of up to 21 significant digits [2]. This is no good for me. [1] https://github.com/sloisel/numeric/blob/656fa1254be540f428710738ca9c1539625777f1/src/numeric.js#L46 https://github.com/sloisel/numeric/blob/656fa1254be540f42871... [2] https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_objects/Number/toPrecision#Exceptions https://developer.mozilla.org/en/docs/Web/JavaScript/Referen...
  • tucaz 10y ago
    I'm going to ask a really stupid question, but here it goes: why the need for such precision? (just curiosity)
    • valera_rozuvan 10y ago
      =) A valid question! I am developing (yet another) fractal viewer for the browser. It's called FractalViewer, and is available from GitHub [1]. I am working on allowing it to zoom past the limit of about 10^(-13). The specific FractalViewer development issue is [2]. Why bother at all? I am very frustrated that there currently is no fractal viewer for the browser that can do a truly deep zoom. See a list I compiled on web-based fractal viewers [3]. Maybe someone can correct me, and point to a JavaScript based fractal viewer that can do really deep zooms... [1] https://github.com/valera-rozuvan/FractalViewer https://github.com/valera-rozuvan/FractalViewer [2] https://github.com/valera-rozuvan/FractalViewer/issues/10 https://github.com/valera-rozuvan/FractalViewer/issues/10 [3] https://github.com/valera-rozuvan/bookmarks-md/blob/master/fractals.md#html--js-interactive-fractals https://github.com/valera-rozuvan/bookmarks-md/blob/master/f...
      • GregBuchholz 10y ago
        Have you heard of Fracint, the mandelbrot generator that uses integer math? http://www.fractint.org/ http://www.fractint.org/
      • valera_rozuvan 10y ago
        @GregBuchholz Of course. I know many programs that allow deep zooms of fractals. However, I am after an implementation in the browser.
        • GregBuchholz 10y ago
          It wasn't clear that you've looked at its implementation of arbitrary precision floating point numbers without using floating point numbers and found it wanting.
          • valera_rozuvan 10y ago
            The author of Fractint, Wes Loewer, created his own arbitrary precision math library [1]. I am aware of how such pieces of software work. I am also aware that to create such a thing from scratch - will take much effort. Especially testing it for correctness. Why reinvent the wheel? That's why I asked the question in the first place. Best case scenario - someone has already implemented such functionality in JavaScript (with complex numbers). But I think that this is not the case. So I guess this leads to the case of porting from some other language. [1] http://www.nahee.com/spanky/www/fractint/arb-prec.html http://www.nahee.com/spanky/www/fractint/arb-prec.html