A field used to receive the standard text presentation form of
the IPv4 or IPv6 address being converted. For IPv4 the address will
be in dotted-decimal format and for IPv6 the address will be in colon-hex
format. The size of the IPv4 address will be a maximum of 15 bytes
and the size of the converted IPv6 address will be a maximum of 45
bytes. Consult the value returned in PRESENTABLE-ADDRESS-LEN for the
actual length of the value in PRESENTABLE-ADDRESS.
PRESENTABLE-ADDRESS-LEN
Initially, an input parameter. The address of a binary halfword
field that is used to specify the length of DSTADDR field on input
and upon a successful return will contain the length of converted
IP address.
ERRNO
Output parameter. A fullword binary field. If RETCODE is negative,
ERRNO contains a valid error number. Otherwise, ignore the ERRNO field.