[cfaussie] Re: Strange FIX() behaviour
Floating point maths is a pain in any language as there are limitations to representing floating points in todays CPU designs. The problem is that floats don't fit nicely into 32 or 64 bit systems and floats are represented as approximations. I had this problem last year in calculating rainfall percentiles and wondered why the results where never exactly the same. Near enough is good enough it appears. Having said that IBM did do something in their hardware to minimize the problem back in 1968. I don't know of Intel or AMD used the same nearest number technique. If you need to be 100% accurate with your cents then I would remove an decimals by treating your cents as whole numbers separate to your dollars , and possibly store as complete cents units. ie: (9 * 100) + 95 would be fine. You could tokenize the dollars and cents to split it up prior to turning it into a pure cents value. I guess most banks have used the slight rounding errors to their advantage. Cheers Simon On 13/08/07, Brett Payne-Rhodes [EMAIL PROTECTED] wrote: This works in terms of what you are trying to achieve Steve... cfset cents = (dollar * 1000)/10 / Floating point maths in scripted languages has always been a pain... Brett B) AJ Mercer wrote: If you do a NumberFormat of cents you get 994.9 #NumberFormat(cents), '999.999')# On 8/13/07, *Steve Onnis* [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] wrote: Its from a shopping cart form Basically what I wanted to do was stop people sending decimal values more than 2 points. The examples of the implementation I was sent from the provider showed that they were just removing the decimal point from the number value and sending that as the cents value. Problem is if for some reason the person implementing the credit card processing passed in 9.995 or something. Then instead of billing the card 9.99 they would be billed 99.95. So I figured I would move the point rather than remove it and make it a whole number which is why I was doing this. I have changed it from FIX() to ROUND() anyway Steve -Original Message- From: cfaussie@googlegroups.com mailto:cfaussie@googlegroups.com [mailto: cfaussie@googlegroups.com mailto:cfaussie@googlegroups.com] On Behalf Of Haikal Saadh Sent: Monday, 13 August 2007 12:19 PM To: cfaussie@googlegroups.com mailto:cfaussie@googlegroups.com Subject: [cfaussie] Re: Strange FIX() behaviour I remember a thread from here a while back discussing the various idiosyncrasies of floating point arithmetic, and that you should be really storing money in cent amounts. I've got no first hand experience in this, but have a flip thru the archives. David Harris wrote: Something odd is happening there If you do this: cfset cents = 995 cfoutput #FIX(cents)# /cfoutput you get the expected result. eg: 995 The only thing that springs to mind is that maybe: 9.95 * 100 = 994. ? not sure how to prove this theory tho... Steve Onnis wrote: Has anyone come across this before? cfset dollar = 9.95 / cfset cents = dollar * 100 / cfoutput #FIX(cents)# /cfoutput outputs 994 I could maybe understand this is i had more decimal places but it is a plain 2 point decimal value. Any ideas? http://www.inevative.com.au/images/email-stationary/inevativeLogo_sm http://www.inevative.com.au/images/email-stationary/inevativeLogo_sm all.jpg Steve Onnis Director / Head Developer http://www.inevative.com.au/images/email-stationary/email.jpg [EMAIL PROTECTED] mailto:[EMAIL PROTECTED] http://www.inevative.com.au/images/email-stationary/phone.jpg +61 3 9001 2258 http://www.inevative.com.au/images/email-stationary/mobile.jpg http://www.inevative.com.au/images/email-stationary/mobile.jpg 0401 667 996 http://www.inevative.com.au/images/email-stationary/web.jpg www.inevative.com.au http://www.inevative.com.au http://www.novahost.com.au http://www.threesquares.com.au http://www.threesquares.com.au http://www.smsonline.com.au -- Cheers Simon Haddon --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups cfaussie group. To post to this group, send
[cfaussie] Re: CFCAMP Australia Is GO
Geoff, That Sounds Really Good, What's the deal with Melbourne being skipped in these things. First Mark Blair the other night at the UG hook up said Adobe will tour, but no Melbourne. Now this. Surely Melbourne would have more or just as much interest as Canberra. PS: The wiki does say to petition you. So anyone else who thinks Melbourne should get a stop, say so. Regards Dale Fraser http://dalefraser.blogspot.com -Original Message- From: cfaussie@googlegroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Geoff Bowers Sent: Monday, 13 August 2007 8:39 PM To: cfaussie Subject: [cfaussie] CFCAMP Australia Is GO Quick heads up for CFAUSSIE... more official marketing to follow. CFCAMP Australia is a free, mini-conference for coldfusion developers by coldfusion developers. We're celebrating the release of Coldfusion 8 -- and there is a lot to celebrate. Help us build the agenda for your city: http://cfcamp.pbwiki.com/ Suggest your own sessions, petition existing sessions, help organise! Brisbane on the 11th of September at the Rydges Canberra on the 12th of September at the UCU Conference Centre Sydney on the 13th of September at the Wesley Centre Enjoy! -- geoff http://www.daemon.com.au/ --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups cfaussie group. To post to this group, send email to cfaussie@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/cfaussie?hl=en -~--~~~~--~~--~--~---
[cfaussie] Re: Storing PDF files as blobs in a database
Hi, I wonder if CFX_PUTIMAGE could be of assistance? or maybe cffile action = readbinary file = c:\xxx\\scan005659.jpg variable=image_var_blob I know they are image type manipulation... but it may help. Steve Onnis [EMAIL PROTECTED] 13/08/2007 11:04 pm I am trying to generate PDF files and store them in a database for future reference instead of writing them to the file system Can anyone point me in the right direction on doing this? I have tried a few things but I cant seem to get it to work, http://www.inevative.com.au/images/email-stationary/inevativeLogo_small.jpg Steve Onnis Director / Head Developer http://www.inevative.com.au/images/email-stationary/email.jpg [EMAIL PROTECTED] http://www.inevative.com.au/images/email-stationary/phone.jpg +61 3 9001 2258 http://www.inevative.com.au/images/email-stationary/mobile.jpg 0401 667 996 http://www.inevative.com.au/images/email-stationary/web.jpg www.inevative.com.au http://www.novahost.com.au http://www.threesquares.com.au http://www.smsonline.com.au --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups cfaussie group. To post to this group, send email to cfaussie@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/cfaussie?hl=en -~--~~~~--~~--~--~---
[cfaussie] Re: CFCAMP Australia Is GO
CFCAMP.. Sounds like a new tag to make your requests slightly more gay? -Original Message- From: Geoff Bowers [mailto:[EMAIL PROTECTED] Sent: Monday, 13 August 2007 8:39 PM To: cfaussie Subject: [cfaussie] CFCAMP Australia Is GO Quick heads up for CFAUSSIE... more official marketing to follow. CFCAMP Australia is a free, mini-conference for coldfusion developers by coldfusion developers. We're celebrating the release of Coldfusion 8 -- and there is a lot to celebrate. Help us build the agenda for your city: http://cfcamp.pbwiki.com/ Suggest your own sessions, petition existing sessions, help organise! Brisbane on the 11th of September at the Rydges Canberra on the 12th of September at the UCU Conference Centre Sydney on the 13th of September at the Wesley Centre Enjoy! -- geoff http://www.daemon.com.au/ --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups cfaussie group. To post to this group, send email to cfaussie@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/cfaussie?hl=en -~--~~~~--~~--~--~---
[cfaussie] Re: CFCAMP Australia Is GO
I'd also definatly go if it was in Melbourne. -Original Message- From: cfaussie@googlegroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Dale Fraser Sent: Monday, 13 August 2007 8:59 PM To: cfaussie@googlegroups.com Subject: [cfaussie] Re: CFCAMP Australia Is GO Geoff, That Sounds Really Good, What's the deal with Melbourne being skipped in these things. First Mark Blair the other night at the UG hook up said Adobe will tour, but no Melbourne. Now this. Surely Melbourne would have more or just as much interest as Canberra. PS: The wiki does say to petition you. So anyone else who thinks Melbourne should get a stop, say so. Regards Dale Fraser http://dalefraser.blogspot.com -Original Message- From: cfaussie@googlegroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Geoff Bowers Sent: Monday, 13 August 2007 8:39 PM To: cfaussie Subject: [cfaussie] CFCAMP Australia Is GO Quick heads up for CFAUSSIE... more official marketing to follow. CFCAMP Australia is a free, mini-conference for coldfusion developers by coldfusion developers. We're celebrating the release of Coldfusion 8 -- and there is a lot to celebrate. Help us build the agenda for your city: http://cfcamp.pbwiki.com/ Suggest your own sessions, petition existing sessions, help organise! Brisbane on the 11th of September at the Rydges Canberra on the 12th of September at the UCU Conference Centre Sydney on the 13th of September at the Wesley Centre Enjoy! -- geoff http://www.daemon.com.au/ --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups cfaussie group. To post to this group, send email to cfaussie@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/cfaussie?hl=en -~--~~~~--~~--~--~---
