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Re: 1.45 x 1 = 1.450000047683716 ? :: CurrencyConverter
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Re: 1.45 x 1 = 1.450000047683716 ? :: CurrencyConverter


  • Subject: Re: 1.45 x 1 = 1.450000047683716 ? :: CurrencyConverter
  • From: Rams <email@hidden>
  • Date: Mon, 17 Jan 2005 13:57:50 -0500

"What Every Computer Scientist Should Know About Floating-Point Arithmetic"

http://docs.sun.com/source/806-3568/ncg_goldberg.html

On Jan 17, 2005, at 1:44 AM, NOYFB wrote:



Hi

I just completed the Dev Connection tutorial CurrencyConverter

http://developer.apple.com/documentation/Cocoa/Conceptual/ ObjCTutorial/chapter01/chapter_1_section_1.html#//apple_ref/doc/uid/ 20001101.

When I enter

1.4 x 1 = 1.450000047683716 should be 1.45
1.1 x x = 1.100000023841858 Should be 1.1
1 x 1 = 1 Ok.

I do not think this is normal or maybe it is and there is extremely good explanation to use setFloatingPointFormat.

Pleas confirm If it's a bug or that I have to specify some sort of flag/option?

Thanks
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References: 
 >1.45 x 1 = 1.450000047683716 ? :: CurrencyConverter (From: NOYFB <email@hidden>)

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