You should not compare floating point numbers for equality in most cases. This is true of any language on any platform.
See http://www.cygnus-software.com/papers/comparingfloats/Comparing%20floating%20point%20numbers.htm - Bryan On Dec 10, 2009, at 10:02:23 PM, RedleX Support wrote: > Hi, > > I need to output a double into a text file and then read it back with 100% > accuracy, will using NSNumber stringValue and then using NSString doubleValue > give me good results? > > For example, if I write the following: > > double a,b; > > a=some number; > > b=[[[NSNumber numberWithDouble:a] stringValue] doubleValue]; > > will a==b > > TIA > > _______________________________________________ > > Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) > > Please do not post admin requests or moderator comments to the list. > Contact the moderators at cocoa-dev-admins(at)lists.apple.com > > Help/Unsubscribe/Update your Subscription: > http://lists.apple.com/mailman/options/cocoa-dev/bryanhenry%40mac.com > > This email sent to bryanhe...@mac.com _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
