Re: double with precision

From: Thomas Fritsch <i.dont.like.spam@xxxxxxxxxxx>
Date: Thu, 28 Jun 2007 00:42:46 +0200

Roy Gourgi schrieb:

Thanks Eric,

Just out of curiosity why can't the number 1.74 be represented exactly with a double?

Java internally stores doubles as a sum of powers of 2 (1, 0.5, 0.25, 0.125, ...). Fractionizing of 1.74 yields
1.74 = 1 * 1
+ 1 * 0.5
+ 0 * 0.25
+ 1 * 0.125
+ 1 * 0.0625
+ 1 * 0.03125
...
which is a never ending series.

--
Thomas
.

References:
- double with precision
  - From: Roy Gourgi
- Re: double with precision
  - From: Roy Gourgi

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