[Flashcoders] math simple operation
Hi, I'm kind of disapointed : trace (1.3-1) // traces:0.3 but : trace (9.3-9) // traces: 0.301 trace (100.3-100) //traces: 0.297 ... is there a way that it can traces always 0.3 has it should be normal ? thx N. -- Nicolas TASKY conseil, analyse et développement multimédia ntasky.com - (514) 839-6426 ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
Re: [Flashcoders] math simple operation
Hi, multiply everything with 1000 before, and divide by 1000 after?:) greetz JC On 1/27/07, ntasky [EMAIL PROTECTED] wrote: Hi, I'm kind of disapointed : trace (1.3-1) // traces:0.3 but : trace (9.3-9) // traces: 0.301 trace (100.3-100) //traces: 0.297 ... is there a way that it can traces always 0.3 has it should be normal ? thx N. -- Nicolas TASKY conseil, analyse et développement multimédia ntasky.com - (514) 839-6426 ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
Re: [Flashcoders] math simple operation
I'm kind of disapointed : trace (1.3-1) // traces:0.3 but : trace (9.3-9) // traces: 0.301 trace (100.3-100) //traces: 0.297 ... is there a way that it can traces always 0.3 has it should be normal ? http://chattyfig.figleaf.com/mailman/htdig/flashcoders/2002-October/049213.html http://en.wikipedia.org/wiki/Floating_point#Accuracy_problems Short answer: that's expected, happens with every language, use rounding if you need, etc. Zeh ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
Re: [Flashcoders] math simple operation
hello :) the float number are a problem in Actionscript :) you can read this article http://en.wikipedia.org/wiki/Floating-point_numberabout this problem. If you want fixed this problem you can use the NumberUtil class of my openSource framework VEGAS : 1 - the page of the project to download the AS2 : framework http://vegas.riaforge.org/ 2 - Use a Subversion(SVN) client to download the framework or download the zip 3 - install the classpath ol vegas in your flash IDE in the preference - ActionScript2 preference ... add the AS2/trunk/src directory 4 - Use the NumberUtil class, example : import vegas.util.NumberUtil ; var result = Number(NumberUtil.toFixed(9.3 - 9, 1)) ; trace(result) ; // 0.3 var result = Number(NumberUtil.toFixed(100.3-100, 1)) ; trace(result) ; // 0.3 EKA+ :) 2007/1/27, ntasky [EMAIL PROTECTED]: Hi, I'm kind of disapointed : trace (1.3-1) // traces:0.3 but : trace (9.3-9) // traces: 0.301 trace (100.3-100) //traces: 0.297 ... is there a way that it can traces always 0.3 has it should be normal ? thx N. -- Nicolas TASKY conseil, analyse et développement multimédia ntasky.com - (514) 839-6426 ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
Re: [Flashcoders] math simple operation
hi, well I'm trying to do a financial application, so it's going to be too heavy to do additionnal operation N. -- Nicolas TASKY conseil, analyse et développement multimédia ntasky.com - (514) 839-6426 - Original Message - From: Hans Wichman [EMAIL PROTECTED] To: Flashcoders mailing list flashcoders@chattyfig.figleaf.com Sent: Saturday, January 27, 2007 8:22 AM Subject: Re: [Flashcoders] math simple operation Hi, multiply everything with 1000 before, and divide by 1000 after?:) greetz JC On 1/27/07, ntasky [EMAIL PROTECTED] wrote: Hi, I'm kind of disapointed : trace (1.3-1) // traces:0.3 but : trace (9.3-9) // traces: 0.301 trace (100.3-100) //traces: 0.297 ... is there a way that it can traces always 0.3 has it should be normal ? thx N. -- Nicolas TASKY conseil, analyse et développement multimédia ntasky.com - (514) 839-6426 ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
Re: [Flashcoders] math simple operation
thx to all of you guys. Going to read all of that :) N. - Original Message - From: eka [EMAIL PROTECTED] To: Flashcoders mailing list flashcoders@chattyfig.figleaf.com Sent: Saturday, January 27, 2007 8:27 AM Subject: Re: [Flashcoders] math simple operation hello :) the float number are a problem in Actionscript :) you can read this article http://en.wikipedia.org/wiki/Floating-point_numberabout this problem. If you want fixed this problem you can use the NumberUtil class of my openSource framework VEGAS : 1 - the page of the project to download the AS2 : framework http://vegas.riaforge.org/ 2 - Use a Subversion(SVN) client to download the framework or download the zip 3 - install the classpath ol vegas in your flash IDE in the preference - ActionScript2 preference ... add the AS2/trunk/src directory 4 - Use the NumberUtil class, example : import vegas.util.NumberUtil ; var result = Number(NumberUtil.toFixed(9.3 - 9, 1)) ; trace(result) ; // 0.3 var result = Number(NumberUtil.toFixed(100.3-100, 1)) ; trace(result) ; // 0.3 EKA+ :) 2007/1/27, ntasky [EMAIL PROTECTED]: Hi, I'm kind of disapointed : trace (1.3-1) // traces:0.3 but : trace (9.3-9) // traces: 0.301 trace (100.3-100) //traces: 0.297 ... is there a way that it can traces always 0.3 has it should be normal ? thx N. -- Nicolas TASKY conseil, analyse et développement multimédia ntasky.com - (514) 839-6426 ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
Re: [Flashcoders] math simple operation
If you're doing a financial application, it's important that you address this correctly: fast but giving the wrong answer isn't an option. I have worked on some systems where the front end gave one figure, but the back end reporting function gave another because this wasn't properly addressed.. As a financial application developer, it's surprising you weren't already aware of the inaccuracy of floating point. - Original Message - From: ntasky [EMAIL PROTECTED] To: Flashcoders mailing list flashcoders@chattyfig.figleaf.com Sent: Saturday, January 27, 2007 1:40 PM Subject: Re: [Flashcoders] math simple operation hi, well I'm trying to do a financial application, so it's going to be too heavy to do additionnal operation N. -- Nicolas TASKY conseil, analyse et développement multimédia ntasky.com - (514) 839-6426 - Original Message - From: Hans Wichman [EMAIL PROTECTED] To: Flashcoders mailing list flashcoders@chattyfig.figleaf.com Sent: Saturday, January 27, 2007 8:22 AM Subject: Re: [Flashcoders] math simple operation Hi, multiply everything with 1000 before, and divide by 1000 after?:) greetz JC On 1/27/07, ntasky [EMAIL PROTECTED] wrote: Hi, I'm kind of disapointed : trace (1.3-1) // traces:0.3 but : trace (9.3-9) // traces: 0.301 trace (100.3-100) //traces: 0.297 ... is there a way that it can traces always 0.3 has it should be normal ? thx N. -- Nicolas TASKY conseil, analyse et développement multimédia ntasky.com - (514) 839-6426 ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
Re: [Flashcoders] math simple operation
Knowledge of arithmetic would seem to be the sort of thing one would expect in a financial expert. :-) Although to be fair, this does crop up about once a quarter in the forum as a new person discovers one of the hidden joys of using a computer that does not have 10 fingers to work with. Ron Paul Andrews wrote: If you're doing a financial application, it's important that you address this correctly: fast but giving the wrong answer isn't an option. I have worked on some systems where the front end gave one figure, but the back end reporting function gave another because this wasn't properly addressed.. As a financial application developer, it's surprising you weren't already aware of the inaccuracy of floating point. - Original Message - From: ntasky [EMAIL PROTECTED] To: Flashcoders mailing list flashcoders@chattyfig.figleaf.com Sent: Saturday, January 27, 2007 1:40 PM Subject: Re: [Flashcoders] math simple operation hi, well I'm trying to do a financial application, so it's going to be too heavy to do additionnal operation N. -- Nicolas TASKY conseil, analyse et développement multimédia ntasky.com - (514) 839-6426 - Original Message - From: Hans Wichman [EMAIL PROTECTED] To: Flashcoders mailing list flashcoders@chattyfig.figleaf.com Sent: Saturday, January 27, 2007 8:22 AM Subject: Re: [Flashcoders] math simple operation Hi, multiply everything with 1000 before, and divide by 1000 after?:) greetz JC On 1/27/07, ntasky [EMAIL PROTECTED] wrote: Hi, I'm kind of disapointed : trace (1.3-1) // traces:0.3 but : trace (9.3-9) // traces: 0.301 trace (100.3-100) //traces: 0.297 ... is there a way that it can traces always 0.3 has it should be normal ? thx N. -- Nicolas TASKY conseil, analyse et développement multimédia ntasky.com - (514) 839-6426 ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
Re: [Flashcoders] math simple operation
I'm far far away from being a financial expert (never told i was one), and what i'm developping right now is just for my personnal stuff. It is how I learn about new stuff. So thx again for your advices N. - Original Message - From: Ron Wheeler [EMAIL PROTECTED] To: Flashcoders mailing list flashcoders@chattyfig.figleaf.com Sent: Saturday, January 27, 2007 9:29 AM Subject: Re: [Flashcoders] math simple operation Knowledge of arithmetic would seem to be the sort of thing one would expect in a financial expert. :-) Although to be fair, this does crop up about once a quarter in the forum as a new person discovers one of the hidden joys of using a computer that does not have 10 fingers to work with. Ron Paul Andrews wrote: If you're doing a financial application, it's important that you address this correctly: fast but giving the wrong answer isn't an option. I have worked on some systems where the front end gave one figure, but the back end reporting function gave another because this wasn't properly addressed.. As a financial application developer, it's surprising you weren't already aware of the inaccuracy of floating point. - Original Message - From: ntasky [EMAIL PROTECTED] To: Flashcoders mailing list flashcoders@chattyfig.figleaf.com Sent: Saturday, January 27, 2007 1:40 PM Subject: Re: [Flashcoders] math simple operation hi, well I'm trying to do a financial application, so it's going to be too heavy to do additionnal operation N. -- Nicolas TASKY conseil, analyse et développement multimédia ntasky.com - (514) 839-6426 - Original Message - From: Hans Wichman [EMAIL PROTECTED] To: Flashcoders mailing list flashcoders@chattyfig.figleaf.com Sent: Saturday, January 27, 2007 8:22 AM Subject: Re: [Flashcoders] math simple operation Hi, multiply everything with 1000 before, and divide by 1000 after?:) greetz JC On 1/27/07, ntasky [EMAIL PROTECTED] wrote: Hi, I'm kind of disapointed : trace (1.3-1) // traces:0.3 but : trace (9.3-9) // traces: 0.301 trace (100.3-100) //traces: 0.297 ... is there a way that it can traces always 0.3 has it should be normal ? thx N. -- Nicolas TASKY conseil, analyse et développement multimédia ntasky.com - (514) 839-6426 ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com
Re: [Flashcoders] math simple operation
Don't worry. We are all happy to show off what we know. Keep the questions coming. You are not the first or the last person to hit this. You will have to pay a bit of an extra price on each computation to be sure that you have guarded enough of the precision of the numbers during calculation so that when you round down to 2 (or however many digits your currency requires) digits after the decimal, you get the same answer that a person would get doing it in base10 using integer arithmetic. No choice. Ron ntasky wrote: I'm far far away from being a financial expert (never told i was one), and what i'm developping right now is just for my personnal stuff. It is how I learn about new stuff. So thx again for your advices N. - Original Message - From: Ron Wheeler [EMAIL PROTECTED] To: Flashcoders mailing list flashcoders@chattyfig.figleaf.com Sent: Saturday, January 27, 2007 9:29 AM Subject: Re: [Flashcoders] math simple operation Knowledge of arithmetic would seem to be the sort of thing one would expect in a financial expert. :-) Although to be fair, this does crop up about once a quarter in the forum as a new person discovers one of the hidden joys of using a computer that does not have 10 fingers to work with. Ron Paul Andrews wrote: If you're doing a financial application, it's important that you address this correctly: fast but giving the wrong answer isn't an option. I have worked on some systems where the front end gave one figure, but the back end reporting function gave another because this wasn't properly addressed.. As a financial application developer, it's surprising you weren't already aware of the inaccuracy of floating point. - Original Message - From: ntasky [EMAIL PROTECTED] To: Flashcoders mailing list flashcoders@chattyfig.figleaf.com Sent: Saturday, January 27, 2007 1:40 PM Subject: Re: [Flashcoders] math simple operation hi, well I'm trying to do a financial application, so it's going to be too heavy to do additionnal operation N. -- Nicolas TASKY conseil, analyse et développement multimédia ntasky.com - (514) 839-6426 - Original Message - From: Hans Wichman [EMAIL PROTECTED] To: Flashcoders mailing list flashcoders@chattyfig.figleaf.com Sent: Saturday, January 27, 2007 8:22 AM Subject: Re: [Flashcoders] math simple operation Hi, multiply everything with 1000 before, and divide by 1000 after?:) greetz JC On 1/27/07, ntasky [EMAIL PROTECTED] wrote: Hi, I'm kind of disapointed : trace (1.3-1) // traces:0.3 but : trace (9.3-9) // traces: 0.301 trace (100.3-100) //traces: 0.297 ... is there a way that it can traces always 0.3 has it should be normal ? thx N. -- Nicolas TASKY conseil, analyse et développement multimédia ntasky.com - (514) 839-6426 ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http://chattyfig.figleaf.com/mailman/listinfo/flashcoders Brought to you by Fig Leaf Software Premier Authorized Adobe Consulting and Training http://www.figleaf.com http://training.figleaf.com ___ Flashcoders@chattyfig.figleaf.com To change your subscription options or search the archive: http
