libqalculate VS decimal.js

1) a scientific calculator with history and variables with a UI similar to https://sourceforge.net/projects/alt1-calculator/ that also can do units like https://qalculate.github.io/ 2) a tiny text chat direct message program that is similarly as easily accessible at Atl1 3) a minimalist dock of as many instances you would like similar to https://punklabs.com/rocketdock, and like where WIN opens the start menu, WIN + # should pop the dock

But unfortunately gravity is the first unit that I find is not supported :(

There's some talk about using g0 here https://github.com/Qalculate/libqalculate/issues/498 but that doesn't work in my version (I'm using an old version, hoping to update my OS this week). You can divide it by earth gravity if you know it by heart, though

    > 100 km/h / 0.956 s / 9.8 m/s^2

I personally use Qalculate (https://qalculate.github.io/), specifically their CLI version for this purpose. I'm not sure how well it compares to GNU Units, but it works well enough for my needs; and it's fairly simple using English-like syntax.

On the terminal, I use `qalc`[1]. It's a nice natural language calculator that does arithmetic, solves quadratic equations/linear systems, does unit conversions and even a bit of calculus. Combine it with a cli graphing tool and you can do pretty cool things.

Anything more complicated I'm probably ok with latency, so I open up wolframalpha and enter it there, again, in natural language.

[1] https://qalculate.github.io/

Btw, download qalculate.github.io and play around with it a bit. I use it for basically all the physics I do. Complete lifesaver.

Personally I use http://qalculate.github.io/ since I end up having to do unit conversions often, it's pretty handy for that

Btw: http://qalculate.github.io/ is nice. I use CLI version to fix my general math incompetence. Even does units nicely, for example, "how long it would take to download 82GB game on 50Mbit connection":

Mate Calculator: Seems a bit basic, when you can do so much more with Qalculate! https://qalculate.github.io/

ii) Third-Party Libraries There are various libraries like math.js, decimal.js, big.js that solve the problem. Each library functions according to its documentation. This approach is comparatively better.

Desperate for a solution, I stumbled upon Decimal.js, a JavaScript library that provides arbitrary-precision decimal arithmetic. I was intrigued, so I decided to give it a try.

I too wish JS had a dedicated Decimal Type, but there is plenty of 3rd party libraries available like decimal.js

For your particular example though, if we keep in mind that the input data to be validated is JSON-serializable, only a string could possibly accommodate the precision expected of a decimal from among the JSON-serializable JS primitives. You could use one or more regex patterns to describe the allowable permutations. The resultant schema would be cross-platform since it doesn't use custom keywords - nice! You can also use unions if you want to say that integers, NaN, and Infinity are also allowed per the docs there.

i've used Decimal.js to account for floating point issues in JS before. maybe this will help? I realize its not native and is a 3rd party lib - but its intent is to handle floating point issues and precision. That kinds sounds like the tree you're barking up right now. maybe it will help.

In the example provided, the name of the library is literally Decimal.js: https://mikemcl.github.io/decimal.js/

I'm working on a project where users will enter numbers like 9,999,999,999.99999 (up to 15 digits, up to 5 of them decimal) and we are having a problem with Numbers losing precision beyond certain number of digits (a typical issue for IEEE Standard 754 Floating Point Numbers, the 0.1 + 0.2 problem). I've solved this problem in a few projects before with the help of decimal.js or bignumber,js . In those cases, we kept user-input as strings and used a few custom-made numeric textbox widgets to accommodate this. Unfortunately, those widgets were proprietary... Now I need one again, but can't find anything. Do they exist?

Looks good! I love the idea of the embedded calculator

I noticed that it doesn't handle remainder/modulo (%) equations:

"10 % 2" results in: "Left hand side of addition cannot be a percentage."

It does look like decimal.js can handle that: https://mikemcl.github.io/decimal.js/#mod

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...

https://github.com/MikeMcl/decimal.js/ great library