Re: Mathematical Functions - is_finite()/is_infinite
| From: | Jakub Vrana | Date: | Fri, 27 Feb 2004 07:50:22 +0000 |
| Subject: | Re: Mathematical Functions - is_finite()/is_infinite | ||
| References: | 1 2 3 4 | Groups: | php.doc |
| Request: | Send a blank email to phpdoc+get-969359259@lists.php.net to get a copy of this message | ||
Cornelia Boenigk wrote:
> is_finite -- Finds whether a value is a legal finite number
> please., what is a *legal* finite number?
> sqrt(2) or pi() are definitively infinite numbers.
> But
> is_finite(sqrt(2)) as well as is_finite(pi()) return TRUE.
> In which sense are those values finite?
Finite means not infinite. E.g. sqrt(-1) is infinite. Documentation is
correct in this case.
Jakub Vrana