Scientific RPN Calculator

TheMarco · 10:36 PM

GET IT HERE:

http://www.precentral.net/homebrew-a...rpn-calculator

UPDATED: Posted a new ipk and a new screenshot.

This application and it's sourcecode, images and markup are licensed under the Creative Commons Attribution-Noncommercial-No Derivatives 3.0 license. FULL LICENSE INFORMATION

The sourcecode is freely available here:

http://github.com/TheMarco/Scientifi...or/tree/master

Like the subject says this is a scientific RPN calculator. This is an early release so there will be bugs.

I think the behavior of the app is mostly right but it will take some real RPN calculator users to verify that things are ok. If they aren't please let me know and try to be as detailed as possible in your bug report.
Most functions work except for:

- FRAC / INT
- FIX / SCI and ENG notations

For those who don't know how an RPN calculator works here's some examples:

Where you'd normally enter 1, +, 2, = you now use: '1 ENTER 2 +'
Where you'd normally enter 2 * (2 + 5) = you can now just use: '2 ENTER 2 ENTER 5 + x'

As you can see you don't need parenthesis on an RPN calculator. WIN!

I put a cap on large integer sizes because JS gets wonky when the numbers get too big. I don't know if there are ways around this and I don't know if it really matters to most people.

The package should install on non-rooted pre's using the SDK install method.

This application is still under development. There's room for some more functions. I welcome suggestions!

Things I'm thinking of:

- choose between LCD style display and regular text for those who don't like the LCD
- graphing (for the further future)
- your suggestions?

I have attached two screenshots and of course the package.

The com.palm.app version is experimental! It has vibrate feedback when touching keys. The nl.i-marco one is the 'stable' release.

abiezerf · 07/08/2009, 01:45 PM

Nice, thanks

phillipah · 07/08/2009, 01:52 PM

very nice thanks

psm9 · 07/08/2009, 02:08 PM

This gives me flashbacks to high school physics...

It's great, though. The other homebrew scientific calculator has tiny buttons to try and hit.
and the *&%*ing calculator on the Pre doesn't have a square root button!

I don't need much out of a calculator, but, a square root is kind of a must.

Now, I just have to practice my RPN again...

tcbeutler · 07/08/2009, 02:54 PM

Press spacebar when in default calculator, you'll notice your 4 buttons on the right change

psm9 · 07/08/2009, 02:59 PM

It's entirely possible I knew that.

I think I remember seeing that here. Fair enough. Rant retracted.
Still love the app,though

jbg7474 · 07/08/2009, 03:35 PM

Ah, this is good stuff. A couple of points:
- it would be nice if you could use the keyboard to type numbers, +,-,*,/ and hit enter
- it would also be nice if it resized for notifications--at least for the USB notification it did not resize (made it hard to hit the bottom row of buttons)

Excellent!!

frankos72 · 07/08/2009, 03:48 PM

looks pretty cool, but what I really miss from the Centro's calculator is the measuremnt conversions. IE Pints to liters, Inches to Centemeters, Cubic feet to Gallons, etc.. Any chance you have one like that in the works?

mitch2k12 · 07/08/2009, 03:53 PM

Im sorry, but im new to this. How do you install it?

TreoRock · 07/08/2009, 04:03 PM

WoW!!! This is freaking AWESOME!!!! Keep up the great work!

remix2000 · 07/08/2009, 04:15 PM

Quote:

Originally Posted by frankos72

looks pretty cool, but what I really miss from the Centro's calculator is the measuremnt conversions. IE Pints to liters, Inches to Centemeters, Cubic feet to Gallons, etc.. Any chance you have one like that in the works?

I agree with this! A calculator with built in conversion is something I would use everyday!

TheMarco · 07/08/2009, 04:16 PM

The conversions idea is excellent. I agree this is super useful. I'll work on it!

ngc2000 · 07/08/2009, 06:00 PM

This is what we need on the Pre. an HP48 emulator. Maybe it can be ported. I have one on my pocketpc and its great.

Christoph Giesselink Emu48 Page

starlord II · 07/08/2009, 06:12 PM

Conversions would be nice, but I usually use a conversion program rather than that function in my current RPN program. But on the other hand I have yet to see a conversion program for the Pre. On the gripping hand though base conversions would be really helpful to me. I work a lot with hexadecimal. But that might require adding more buttons.

TheMarco · 07/08/2009, 06:33 PM

Hmmm resizing for notifications is kind of a problem because it really needs the space or everything will get too cramped. Not sure how to deal with that...

@ngc2000 I think writing a HP48 emulator in pure Javascript will be... a little bit hard. Not sure if it can be done at all even

Now the conversions... I'm kinda wondering whether this shouldn't be a completely different app. Or it could be a different scene in this app. Not sure what would be best really! It may be a better idea to port the Mac OS X converter dashboard app to the Pre. I use that app a lot myself.

ECHO-313 · 07/09/2009, 09:05 AM

Quote:

Originally Posted by mitch2k12

Im sorry, but im new to this. How do you install it?

+1

ECHO-313 · 07/09/2009, 09:39 AM

Sorry, I just read the "How To Install". BARN!! I reallly could use this but no way do I want to install like that. I for sure would screw something up.

I guess I'll wait till a regular app comes out. I'm so tired of hearing soon, soon. Lets have them already

"

pointgod36 · 07/09/2009, 10:28 AM

Nice job man. Sweet App

twtcad · 07/09/2009, 01:35 PM

Very nice app! Another feature I would find really helpful is a feet/inches option like on my ProjectCalc calculator. If I had that, I could leave it home!

Nurgling · 07/09/2009, 02:43 PM

Quote:

Originally Posted by ngc2000

This is what we need on the Pre. an HP48 emulator. Maybe it can be ported. I have one on my pocketpc and its great.

Christoph Giesselink Emu48 Page

Have to agree. I'm not a programmer, but if adding some extra display lines and adding the funcitons isn't too bad, the HP48 is the macdaddy of RPN.

edit: Sorry, posted before I saw the OP's reply. If it's too tough, ah well.

07/08/2009, 01:45 PM	#2 (permalink)
abiezerf Member Join Date: Jun 2009 Posts: 164 Likes Received: 1 Thanks: 78 Thanked 11 Times in 7 Posts	Nice, thanks
	Liked by

07/08/2009, 01:52 PM	#3 (permalink)
phillipah Member Join Date: Apr 2009 Posts: 96 Likes Received: 7 Thanks: 11 Thanked 18 Times in 13 Posts	very nice thanks
	Liked by

07/08/2009, 02:08 PM	#4 (permalink)
psm9 Member Join Date: Jan 2008 Location: South Jersey Posts: 329 Likes Received: 0 Thanks: 84 Thanked 68 Times in 54 Posts	This gives me flashbacks to high school physics... It's great, though. The other homebrew scientific calculator has tiny buttons to try and hit. and the &%ing calculator on the Pre doesn't have a square root button! I don't need much out of a calculator, but, a square root is kind of a must. Now, I just have to practice my RPN again... __________________ Palm V -->m505 -->Tungsten T3-->T5->Centro-->Pre!
	Liked by

07/08/2009, 02:54 PM	#5 (permalink)
tcbeutler Member Join Date: Jun 2009 Posts: 66 Likes Received: 0 Thanks: 12 Thanked 12 Times in 6 Posts	Press spacebar when in default calculator, you'll notice your 4 buttons on the right change
	Liked by Thanked By: psm9

07/08/2009, 02:59 PM	#6 (permalink)
psm9 Member Join Date: Jan 2008 Location: South Jersey Posts: 329 Likes Received: 0 Thanks: 84 Thanked 68 Times in 54 Posts	It's entirely possible I knew that. I think I remember seeing that here. Fair enough. Rant retracted. Still love the app,though __________________ Palm V -->m505 -->Tungsten T3-->T5->Centro-->Pre!
	Liked by

07/08/2009, 03:35 PM	#7 (permalink)
jbg7474 Moderator Join Date: Jan 2009 Location: SW Ohio Posts: 3,858 Likes Received: 92 Thanks: 1,019 Thanked 1,061 Times in 715 Posts	Ah, this is good stuff. A couple of points: - it would be nice if you could use the keyboard to type numbers, +,-,*,/ and hit enter - it would also be nice if it resized for notifications--at least for the USB notification it did not resize (made it hard to hit the bottom row of buttons) Excellent!! __________________ Palm III-->Handspring Visor-->Sony Clie PEG-NR70-->no PDA -->Palm Treo 755p-->Palm Pre-->HP Veer
	Liked by

07/08/2009, 03:48 PM	#8 (permalink)
frankos72 Member Join Date: May 2009 Location: Oklahoma Posts: 530 Likes Received: 13 Thanks: 68 Thanked 102 Times in 56 Posts	looks pretty cool, but what I really miss from the Centro's calculator is the measuremnt conversions. IE Pints to liters, Inches to Centemeters, Cubic feet to Gallons, etc.. Any chance you have one like that in the works? __________________ frankos72 Simple Bible - Simple Bible Pro - Bits of God Website My Day Job: www.pigstands.com
	Liked by

07/08/2009, 03:53 PM	#9 (permalink)
mitch2k12 Member Join Date: Jun 2009 Posts: 146 Likes Received: 0 Thanks: 27 Thanked 6 Times in 4 Posts	Im sorry, but im new to this. How do you install it?
	Liked by

07/08/2009, 04:03 PM	#10 (permalink)
TreoRock Member Join Date: Mar 2000 Location: CA Posts: 3,099 Likes Received: 26 Thanks: 350 Thanked 125 Times in 80 Posts	WoW!!! This is freaking AWESOME!!!! Keep up the great work! __________________
	Liked by

07/08/2009, 04:16 PM	#12 (permalink)
TheMarco Member Join Date: Jun 2009 Location: Sunnyvale CA Posts: 699 Likes Received: 6 Thanks: 19 Thanked 160 Times in 72 Posts	The conversions idea is excellent. I agree this is super useful. I'll work on it!
	Liked by

07/08/2009, 06:00 PM	#13 (permalink)
ngc2000 Member Join Date: Jun 2009 Posts: 29 Likes Received: 0 Thanks: 7 Thanked 3 Times in 2 Posts	This is what we need on the Pre. an HP48 emulator. Maybe it can be ported. I have one on my pocketpc and its great. Christoph Giesselink Emu48 Page
	Liked by

07/08/2009, 06:12 PM	#14 (permalink)
starlord II Member Join Date: Nov 1999 Location: Lincoln, NE Posts: 118 Likes Received: 0 Thanks: 1 Thanked 3 Times in 3 Posts	Conversions would be nice, but I usually use a conversion program rather than that function in my current RPN program. But on the other hand I have yet to see a conversion program for the Pre. On the gripping hand though base conversions would be really helpful to me. I work a lot with hexadecimal. But that might require adding more buttons. __________________ Avigo > PalmIII > PalmIIIEX > Visor > Prism > Prism w/Data module > Treo 300 > Treo 600 > Treo 650 > Treo 700P > Pre
	Liked by

07/08/2009, 06:33 PM	#15 (permalink)
TheMarco Member Join Date: Jun 2009 Location: Sunnyvale CA Posts: 699 Likes Received: 6 Thanks: 19 Thanked 160 Times in 72 Posts	Hmmm resizing for notifications is kind of a problem because it really needs the space or everything will get too cramped. Not sure how to deal with that... @ngc2000 I think writing a HP48 emulator in pure Javascript will be... a little bit hard. Not sure if it can be done at all even Now the conversions... I'm kinda wondering whether this shouldn't be a completely different app. Or it could be a different scene in this app. Not sure what would be best really! It may be a better idea to port the Mac OS X converter dashboard app to the Pre. I use that app a lot myself.
	Liked by

07/09/2009, 09:39 AM	#17 (permalink)
ECHO-313 Member Join Date: Jun 2009 Posts: 20 Likes Received: 0 Thanks: 0 Thanked 1 Time in 1 Post	Sorry, I just read the "How To Install". BARN!! I reallly could use this but no way do I want to install like that. I for sure would screw something up. I guess I'll wait till a regular app comes out. I'm so tired of hearing soon, soon. Lets have them already "
	Liked by

07/09/2009, 10:28 AM	#18 (permalink)
pointgod36 Member Join Date: Jun 2009 Posts: 11 Likes Received: 0 Thanks: 0 Thanked 5 Times in 1 Post	Nice job man. Sweet App
	Liked by

07/09/2009, 01:35 PM	#19 (permalink)
twtcad Member Join Date: Jul 2009 Posts: 3 Likes Received: 0 Thanks: 1 Thanked 0 Times in 0 Posts	Very nice app! Another feature I would find really helpful is a feet/inches option like on my ProjectCalc calculator. If I had that, I could leave it home!
	Liked by

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