Re: [HACKERS] CIDR type and functions

Thus spake Bruce Momjian
> Check \df and \fo.  There is a >> and << operators that do subnet
> testing.

[I assume you meant \do]

Cool.  I checked out what other functions as well.  I don't see a couple
that were discussed early on though.  Specifically, how about functions
to extract the  host, the network or the netmask from an address?

Here are the functions I had suggested.

    netmask('192.3.4.5/24::cidr') == 255.255.255.0
    masklen('192.3.4.5/24::cidr') == 24
    host('192.3.4.5/24::cidr') == 192.3.4.5
    network('192.3.4.5/24::cidr') == 192.3.4.0

and perhaps;

    class('192.3.4.5/24::cidr') == C
    classnet('192.3.4.5/24::cidr') == 192.3.4

Can I help code up some of this stuff?

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D'Arcy J.M. Cain <darcy@{druid|vex}.net>   |  Democracy is three wolves
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