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Lesliect6 · Sep 25th, 2005, 9:45 AM

I've just finished my second degree equation solver v2.0, which doesn't stick any more to integer numbers, and there are no more bugs in it! Download it from my website :

www.freewebs.com/lesliect6

tempest · Sep 25th, 2005, 9:59 AM

Really cool program! I had one on my TI-83+ that i wrote for my math class a while back that was able to solve any problem with the calculators built-in support for imaginary numbers, which computers don't have. I've never heard the name for it, "Second degree equation" i normally just call it a "quadratic equation".

BinaryStorm · Sep 25th, 2005, 12:37 PM

I like the interface...
What technologies you used to make it?

... and one thing... Your application uses 98-99% of my CPU power, while other programs use cca 1-30% while running. CPU temperature constantly raises, and cools off when I quit the program.

xavier · Sep 25th, 2005, 2:03 PM

hmm .. if delta < 0 , it sais no solution, you could have shown the complex solution and BinaryStorm is right - my proc went to 50 % when i started the app and when it calculated the results 100%

tempest · Sep 25th, 2005, 2:06 PM

Calculation really should be processor demanding. It's just the quadratic formula...

Lesliect6 · Sep 26th, 2005, 8:24 AM

Thank you very much! I didn't know it uses so much processor...how can you slow it down so that it uses 1-30 percent, like BinaryStorm said?

Leslie CT

xavier · Sep 26th, 2005, 8:34 AM

Probabily you need to show us the code. That way, maybe somebody will spot what you'r doing wrong

BinaryStorm · Sep 26th, 2005, 8:41 AM

You need to optimize your code. There are few ways of doing that :
1. (inline) Assembly
2. optimize your calculation algorithms/etc...
--------
You probably don't want to try first way

, so the second one will be best for you.

Try searching on Google for "program CPU optimization" or something similar.

And you have some basic things covered here -> http://www.azillionmonkeys.com/qed/optimize.html

Here's what Wikipedia has about software optimization : http://en.wikipedia.org/wiki/Software_optimization

BinaryStorm · Sep 26th, 2005, 8:43 AM

...or you could describe us your calculation algorithm or post pseudo-code if you don't want to post source code.

Dameon · Sep 26th, 2005, 8:56 AM

You should only be seeing CPU usage when the actual calculation is taking place. Check your code for any unnecessary looping...I noticed that the window does not appear to be using the standard widgets, are you using GDI? It seems like the window is repainting like crazy...notice the wildly flickering cursor...I advise that you only repaint when asked via WM_PAINT and, if you are intentionally triggering a repaint to get a flashing cursor, use a timer.

Sep 25th, 2005, 9:45 AM	#1
Lesliect6 Programmer Join Date: Aug 2005 Posts: 68 Rep Power: 4	Second degree equation solver v2.0 I've just finished my second degree equation solver v2.0, which doesn't stick any more to integer numbers, and there are no more bugs in it! Download it from my website : www.freewebs.com/lesliect6

Sep 25th, 2005, 9:59 AM	#2
tempest Programming Guru Join Date: Oct 2004 Posts: 1,041 Rep Power: 6	Really cool program! I had one on my TI-83+ that i wrote for my math class a while back that was able to solve any problem with the calculators built-in support for imaginary numbers, which computers don't have. I've never heard the name for it, "Second degree equation" i normally just call it a "quadratic equation". __________________

Sep 25th, 2005, 12:37 PM	#3
BinaryStorm Programmer Join Date: Sep 2005 Location: Po�ega, Croatia Posts: 93 Rep Power: 4	I like the interface... What technologies you used to make it? ... and one thing... Your application uses 98-99% of my CPU power, while other programs use cca 1-30% while running. CPU temperature constantly raises, and cools off when I quit the program. __________________ 1001 1101 1001 1110 0101 1102 ?! AAAAARRGGHHH _____________________ Free&Premium Web hosting reviews. Click here! Money making oasis. Run your own home based biz.

Sep 25th, 2005, 2:03 PM	#4
xavier Professional Programmer Join Date: Oct 2004 Location: .ro Posts: 406 Rep Power: 5	hmm .. if delta < 0 , it sais no solution, you could have shown the complex solution and BinaryStorm is right - my proc went to 50 % when i started the app and when it calculated the results 100% __________________ Don't take life too seriously, it's not permanent !

Sep 25th, 2005, 2:06 PM	#5
tempest Programming Guru Join Date: Oct 2004 Posts: 1,041 Rep Power: 6	Calculation really should be processor demanding. It's just the quadratic formula... __________________

Sep 26th, 2005, 8:24 AM	#6
Lesliect6 Programmer Join Date: Aug 2005 Posts: 68 Rep Power: 4	Thank you very much! I didn't know it uses so much processor...how can you slow it down so that it uses 1-30 percent, like BinaryStorm said? Leslie CT

Sep 26th, 2005, 8:34 AM	#7
xavier Professional Programmer Join Date: Oct 2004 Location: .ro Posts: 406 Rep Power: 5	Probabily you need to show us the code. That way, maybe somebody will spot what you'r doing wrong __________________ Don't take life too seriously, it's not permanent !

Sep 26th, 2005, 8:41 AM	#8
BinaryStorm Programmer Join Date: Sep 2005 Location: Po�ega, Croatia Posts: 93 Rep Power: 4	You need to optimize your code. There are few ways of doing that : 1. (inline) Assembly 2. optimize your calculation algorithms/etc... -------- You probably don't want to try first way , so the second one will be best for you. Try searching on Google for "program CPU optimization" or something similar. And you have some basic things covered here -> http://www.azillionmonkeys.com/qed/optimize.html Here's what Wikipedia has about software optimization : http://en.wikipedia.org/wiki/Software_optimization __________________ 1001 1101 1001 1110 0101 1102 ?! AAAAARRGGHHH _____________________ Free&Premium Web hosting reviews. Click here! Money making oasis. Run your own home based biz.

Sep 26th, 2005, 8:43 AM	#9
BinaryStorm Programmer Join Date: Sep 2005 Location: Po�ega, Croatia Posts: 93 Rep Power: 4	...or you could describe us your calculation algorithm or post pseudo-code if you don't want to post source code. __________________ 1001 1101 1001 1110 0101 1102 ?! AAAAARRGGHHH _____________________ Free&Premium Web hosting reviews. Click here! Money making oasis. Run your own home based biz.

Sep 26th, 2005, 8:56 AM	#10
Dameon Troll Join Date: Apr 2005 Location: Texas Posts: 732 Rep Power: 4	You should only be seeing CPU usage when the actual calculation is taking place. Check your code for any unnecessary looping...I noticed that the window does not appear to be using the standard widgets, are you using GDI? It seems like the window is repainting like crazy...notice the wildly flickering cursor...I advise that you only repaint when asked via WM_PAINT and, if you are intentionally triggering a repaint to get a flashing cursor, use a timer. __________________ MD5(sig) = bcef75433db02e9ad9bf81d6f7c5c270

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Programming Forums > Projects > Show Off Your Open Source Projects

Second degree equation solver v2.0