On 26 Feb 2010, at 11:37, ik wrote:
I've made a small test:
if (0.1+0.2) = 0.3 then
The only compiler/interpator that actually tells that it equal is FPC.
Then you are very lucky that FPC says it is equal.
I've tested it using Javascript (in Firefox), Ruby, Python, C (gcc)
and
Perl.
They are just as correct as FPC.
Except FPC, everyone tells that 0.1+0.2 = 0.30000000000000004
And that answer is also correct.
Can someone explain how FPC see the result and why others does not
see it
like that ?
It's because of the way floating point works. Read e.g.
http://www.lahey.com/float.htm
Jonas
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