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Re: Math 101 anyone?

by davido (Cardinal)
on Oct 12, 2004 at 07:44 UTC ( [id://398403]=note: print w/replies, xml ) Need Help??


in reply to Math 101 anyone?

What Every Computer Scientist Should Know About Floating-Point Arithmetic

Not a bug, it's an artifact of a finite number of bits being used to represent an infinite concept. It's also covered in perlfaq4 under the heading "Why am I getting long decimals (eg, 19.9499999999999) instead of the numbers I should be getting (eg, 19.95)?"

And if you want excrutiating detail on the issue, look at perlnumber.


Dave

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