DOKK / manpages / debian 10 / libcommoncpp2-doc / ost_IPV6Mask.3.en
ost::IPV6Mask(3) Library Functions Manual ost::IPV6Mask(3)

ost::IPV6Mask - Internet addresses used specifically as masking addresses (such as ' 255.255.255.0') are held in the IPV6Mask derived object.

#include <address.h>

Inherits ost::IPV6Address.


IPV6Mask (const char *mask)
Create the mask from a null terminated ASCII string such as '255.255.255.128'.


__EXPORT IPV6Host operator & (const IPV6Host &addr, const IPV6Mask &mask)
Masks are usually used to coerce host addresses into a specific router or class domain.

Internet addresses used specifically as masking addresses (such as ' 255.255.255.0') are held in the IPV6Mask derived object.

The separate class is used so that C++ type casting can automatically determine when an IPV6Address object is really a mask address object rather than simply using the base class. This also allows manipulative operators for address masking to operate only when presented with a Masked address as well as providing cleaner and safer source.

Author:

David Sugar dyfet@ostel.com Internet Address Mask such as subnet masks.

Create the mask from a null terminated ASCII string such as '255.255.255.128'.

Parameters:

mask null terminated ASCII mask string.

__EXPORT IPV6Host operator& (const IPV6Host & addr, const IPV6Mask & mask) [friend]

Masks are usually used to coerce host addresses into a specific router or class domain. This can be done by taking the Inet Host Address object and 'and'ing it with an address mask. This operation can be directly expressed in C++ through the & operator.

Returns:

a internet host address that has been masked.

Parameters:

addr host address to be masked by subnet.
mask inetnet mask address object to mask by.

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Wed Oct 31 2018 GNU CommonC++