Google's ingenious variable-precision Calculator app

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Calculator Culture

Күн бұрын

Пікірлер: 28

@bonez565 2 жыл бұрын

That's a neat feature. It works on my phone as well (note 10+, android 12)

@jurjenbos228 2 жыл бұрын

Androids calculator does way more than what you show: it doesn't only do infinite precision, but also keeps track of the precision. For example, sin(pi/6) is 0,5 and not 0,50000000... to show you it is exact.

@CalculatorCulture 2 жыл бұрын

Thanks, yes that's a good point.

@Olejika_CheatEngine 2 жыл бұрын

It doesn't always work kzfaq.info/get/bejne/aM6Yo62pz7u6h3U.html

@davidwyatt6907 Жыл бұрын

Hi. Thanks (late) for his video. Not sure if you are aware that Python also seems to do this. Here is an example: >>> b=factorial(10000) >>> b+=1 >>> b-=factorial(10000) >>> b 1 >>> cheers, David

@CalculatorCulture Жыл бұрын

Partly yes. Python uses bignums for integer arithmetic but floating point calculations use 64-bit double-precision values.

@big_badaboom 2 жыл бұрын

Presumably it's using the Java BigDecimal class behind the scenes. But I wonder what is doing for irrational constants like PI. Presumably it just has it stored as a constant in the code - to some large number of decimal places.

@john_hind 2 жыл бұрын

It is much cleverer than that. I tried to post a link, but it seems to have been redacted. Try searching for "Small-data computing: correct calculator arithmetic".

@big_badaboom 2 жыл бұрын

@@john_hind Very interesting. Thanks for the link.

@CalculatorCulture 2 жыл бұрын

@@john_hind thanks! I added the link to the video description.

@DexieTheSheep 2 жыл бұрын

Maybe it just calculates it as you go, whenever it needs more precision.

@CalculatorCulture 2 жыл бұрын

@@DexieTheSheep yes that's correct. according to article linked in the video description "the number of additional digits computed each time is a bit more than of the number we have computed so far, so we recompute in larger chunks the further the user scrolls"

@UnlikelyAsItMaySeem 2 жыл бұрын

Perhaps also of interest, for the command line, Simon Tatham's "spigot: an exact real calculator" but see the section "Hazards to computation"

@CalculatorCulture 2 жыл бұрын

Thanks, I'll check it out.

@finantra4511 4 ай бұрын

How to use memory function in this app

@TheOnlyName Жыл бұрын

ooh that's really cool!

@hegedusuk 2 жыл бұрын

The app you referenced for ios 'hypercalc' looks pretty good but it doesn't appear to be an arbitrary precision calculator. I can't seem to find one I'm afraid. Do you happen to have a link?

@CalculatorCulture 2 жыл бұрын

I was thinking of Hipercalc hiperdevelopment.wixsite.com/hipercalc

@Mythologos 2 жыл бұрын

Extra features you didn't mention: 25 trackers + Adware!

@intazoid Жыл бұрын

🤭🤭

@priangsunath3951 2 ай бұрын

On the calculator app? I get it if you're talking about Google's version of Android in general but this is just the calculator what would be the motivation behind tracking calculations? How would you even sell that data, it doesn't tell advertisers anything about anyone? And what ads have you been getting on a calculator app??