Droid X Calculator Inaccurate!!?

[LMO]

WOW, this upsets me. I just did a calculation on the Droid X (stock) calculator... this was my favorite calculator these days... and here is the result:

1184.03 - 1182.44 = 1.5899999

WTF!??? Any other calculator gives 1.59! I don't know why it would do that. I only entered 2 decimal places for each number. Very strange. Is everyone else getting this too on theirs???

 

[vicw926a4]

Yup. Same results on mine. I did get an accurate result using an alternate calc app, so I may use it from here on.

Sent from my DROIDX using Tapatalk

 

[Arelunde]

What's the problem? You just round off the ...899999. It's giving you an accurate answer.

 

[vicw926a4]

What's the problem? You just round off the ...899999. It's giving you an accurate answer.

I'm hopeful that you are just kidding, or were you one of the designers of the original lenses on the Hubble telescope?

 

[tntdroid]

That is the correct answer. Like it was said we round up.

Sent from my DROIDX using Tapatalk

 

[vicw926a4]

C'mon, rounding the result can be appropriate for a division operation, where you are dealing with ratios, but it should never be required with a simple addition or subtraction operation.

Try any other 100 calculators, and do the same calculation that LMO used, and let use know if any one of them give such as result as the stock DX calculator.

 

[davidnc]

WOW, this upsets me. I just did a calculation on the Droid X (stock) calculator... this was my favorite calculator these days... and here is the result:

1184.03 - 1182.44 = 1.5899999

WTF!??? Any other calculator gives 1.59! I don't know why it would do that. I only entered 2 decimal places for each number. Very strange. Is everyone else getting this too on theirs???

LOL , that is the correct answer as mentioned it's just rounded off ,that's the way fractions work when its above the number "5".

C'mon, rounding the result can be appropriate for a division operation, where you are dealing with ratios, but it should never be required with a simple addition or subtraction operation.

Try any other 100 calculators, and do the same calculation that LMO used, and let use know if any one of them give such as result as the stock DX calculator.

lol I gotta ask what are you measuring to be closer then that , that number cant get rounded off , I mean even rounding it or not the differencs is only 1 micro inch ( 1 millionth of an inch)

 

[ririder]

The droid is wrong!! it should have never given that answer. There is NO way that 1184.03 MINUS 1182.44 should equal anything BUT 1.59!! This is simple math. Nothing fancy to it. I would like davidnc and tntdroid to show me how the answer given on the droid is correct and the answer given on every other calculator is wrong.

 

[greydarrah]

So I wont try to calculate the trajectory of the next shuttle launch with my X. Big deal...who cares...it a PHONE.

 

[PhoenixMike]

I have to say, the Droid X is still a smarter machine than I is.

 

[davidnc]

I would like davidnc and tntdroid to show me how the answer given on the droid is correct and the answer given on every other calculator is wrong.

LOL , my point is though what are you going to possible check that "one millionth of an inch" is going to matter, I dont thing they make gear analyzer, cord. measuring machines, that check that close. Its just a theological number I dont think a teacher would mark it as a wrong answer.(close enough ) lol.

Probably not even measure space shuttle that close since it was built by the lowest builder (well so said in the movie anyhoo) ha

PS: would my bb calulator count as a comparison ? ,

 

[sniffs]

It's not just the DX, it's many Android phones that do this.

 

[Johnly]

It's not just the DX, it's many Android phones that do this.

Bingo. I have had many android devices, the calculator is buggy period. Maybe someone cares enough to email the boss? I just use a free scientific calculator in the market, flawless.

 

[DroidDev]

Actually the answer you got is more accurate as it gives you the answer to the much smaller decimal point. Round up and shut up Just wanted to say that....

Mathematically it is 100% correct. Same as saying Pi is 3.14 and Pi is 3.14159265

Both are correct. The latter is more accurate. I can set my TI-83 to do the same thing. The DXs calc's length of calculation after decimal is set to more then just two deep. This is not an issue, learn to round up and move on.

Although I am beginning to think the OP should read my signature...I think we just bit the troll bait....

 

[numbskull#AC]

The answer mentioned by the OP is NOT accurate. It would only be accurate if there were such a thing as mathematical friction, because the correct answer of 1.59 is .0000001 bigger than 1.5899999. It's not a matter of precision, and even if it were, it would still be wrong because you can't increase precision during a mathematical operation.

 

[ragnarokx]

There are scientific calculators available in the Market that can offer better accuracy/more significant figures if that's what you're looking for.

 

[DroidDev]

Below is the first 4,121 digits of the calculated result of Pi. Does this mean that the universally accepted 3.14 is any less correct?

3.141592653589793238462643383279502884197169399375105820974944592307816406286208998628034825342117067982148086513282306647093844609550582231725359408128481117450284102701938521105559644622948954930381964428810975665933446128475648233786783165271201909145648566923460348610454326648213393607260249141273724587006606315588174881520920962829254091715364367892590360011330530548820466521384146951941511609433057270365759591953092186117381932611793105118548074462379962749567351885752724891227938183011949129833673362440656643086021394946395224737190702179860943702770539217176293176752384674818467669405132000568127145263560827785771342757789609173637178721468440901224953430146549585371050792279689258923542019956112129021960864034418159813629774771309960518707211349999998372978049951059731732816096318595024459455346908302642522308253344685035261931188171010003137838752886587533208381420617177669147303598253490428755468731159562863882353787593751957781857780532171226806613001927876611195909216420198938095257201065485863278865936153381827968230301952035301852968995773622599413891249721775283479131515574857242454150695950829533116861727855889075098381754637464939319255060400927701671139009848824012858361603563707660104710181942955596198946767837449448255379774726847104047534646208046684259069491293313677028989152104752162056966024058038150193511253382430035587640247496473263914199272604269922796782354781636009341721641219924586315030286182974555706749838505494588586926995690927210797509302955321165344987202755960236480665499119881834797753566369807426542527862551818417574672890977772793800081647060016145249192173217214772350141441973568548161361157352552133475741849468438523323907394143334547762416862518983569485562099219222184272550254256887671790494601653466804988627232791786085784383827967976681454100953883786360950680064225125205117392984896084128488626945604241965285022210661186306744278622039194945047123713786960956364371917287467764657573962413890865832645995813390478027590099465764078951269468398352595709825822620522489407726719478268482601476990902640136394437455305068203496252451749399651431429809190659250937221696461515709858387410597885959772975498930161753928468138268683868942774155991855925245953959431049972524680845987273644695848653836736222626099124608051243884390451244136549762780797715691435997700129616089441694868555848406353422072225828488648158456028506016842739452267467678895252138522549954666727823986456596116354886230577456498035593634568174324112515076069479451096596094025228879710893145669136867228748940560101503308617928680920874760917824938589009714909675985261365549781893129784821682998948722658804857564014270477555132379641451523746234364542858444795265867821051141354735739523113427166102135969536231442952484937187110145765403590279934403742007310578539062198387447808478489683321445713868751943506430218453191048481005370614680674919278191197939952061419663428754440643745123718192179998391015919561814675142691239748940907186494231961567945208095146550225231603881930142093762137855956638937787083039069792077346722182562599661501421503068038447734549202605414665925201497442850732518666002132434088190710486331734649651453905796268561005508106658796998163574736384052571459102897064140110971206280439039759515677157700420337869936007230558763176359421873125147120532928191826186125867321579198414848829164470609575270695722091756711672291098169091528017350671274858322287183520935396572512108357915136988209144421006751033467110314126711136990865851639831501970165151168517143765761835155650884909989859982387345528331635507647918535893226185489632132933089857064204675259070915481416549859461637180270981994309924488957571282890592323326097299712084433573265489382391193259746366730583604142813883032038249037589852437441702913276561809377344403070746921120191302033038019762110110044929321516084244485963766983895228684783123552658213144957685726243344189303968642624341077322697802807318915441101044682325271620105265227211166039666557309254711055785376346682065310989652691862056476931257058635662018558100729360659876486117910453348850346113657686

 

[Droooid]

This sounds like a floating point error that could occur on any calculator relying on floating point arithmetic got something like this. (If you don't know what I'm talking about, google it.)

Also, I feel the need to comment that saying Pi *is* 3.14 or 3.14159 are equally correct only because they both are false. These are approximations of Pi, certainly, but not Pi itself. Pi is the ratio of the circumference of a circle to its diameter. It also is transcendental and, hence, cannot have a finite decimal expansion (i.e., one we could write down so simply).

Sent from my DROIDX using Tapatalk

 

[LMO]

What's the problem? You just round off the ...899999. It's giving you an accurate answer.

I would not say that is an accurate answer. The numbers in the example have 2 decimal places, not 7. But more importantly, why is it dumping 1/100th?? Where did the .001 go??? Even a cheap dollar store calculator does not do that (well some may...LOL). But come on, this is a Droid! I hope they find and fix that bug!

 

[DroidDev]

This sounds like a floating point error that could occur on any calculator relying on floating point arithmetic got something like this. (If you don't know what I'm talking about, google it.)

Also, I feel the need to comment that saying Pi *is* 3.14 or 3.14159 are equally correct only because they both are false. These are approximations of Pi, certainly, but not Pi itself. Pi is the ratio of the circumference of a circle to its diameter. It also is transcendental and, hence, cannot have a finite decimal expansion (i.e., one we could write down so simply).

Sent from my DROIDX using Tapatalk

Point taken. I just calculated the first 9,000 digits of pi..I could go higher but there would not be any point.

But when it comes to 1.59 vs. 1.58999 is relative. 1.58999 is 1.59 is 1.6 all rounded. I know that you can continue to round up but if what you are expecting is a number with two decimal points just be smart and round up. I agree with Rag though, there are some better calculators on the Market. I dont use the droid x's calculator lol. Given the fact that it gave him 1.58999 instead of 1.59 when simply subtracting is a flaw in the calculator. From Motorola's stand point this is probably a non issue because all you have to do is take a split second to round the numbers. A very rudimentary procedure at best.