Re: Re: Constants for better double edge case handling
| From: | Andrea Faulds | Date: | Wed, 19 Oct 2016 14:15:01 +0000 |
| Subject: | Re: Re: Constants for better double edge case handling | ||
| References: | 1 2 3 | Groups: | php.internals |
| Request: | Send a blank email to internals+get-96490@lists.php.net to get a copy of this message | ||
Hi,
Anatol Belski wrote:
It can't hurt to add them anyway, though. -- Andrea Faulds https://ajf.me/Anatol Belski wrote:etc.)Producing INF. There's currently no explicit way to produce INF and NAN, whereby NAN is gettable with sqrt(-1). echo PHP_DBL_MAX*PHP_DBL_MAX, " ", -PHP_DBL_MAX*PHP_DBL_MAX; INF-INF I'm not sure I understand this use-case. We already have the INF and NAN constants for obtaining those values, and the standard IEEE 754 operations which produce these values are implemented (1/0 for INF, 0/0 for NAN,Ah, so then it is fine, thanks for the education. Then it'd stay by DBL_DIG and DBL_EPSILON. While DBL_MAX/ DBL_MIN could still be useful in some case (fe one would want to explicitly know the values), in most case it'd be covered by INF.