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.\" .. by the ddn network information center.
.pp
each line is of the following format:
.pp
.rs
.i protocol number aliases ...
.re
.pp
where the fields are delimited by spaces or tabs.
empty lines are ignored.
if a line contains a hash mark (#), the hash mark and the part
of the line following it are ignored.
.pp
the field descriptions are:
.tp
.i protocol
the native name for the protocol.
for example
.ir ip ,
.ir tcp ,
or
.ir udp .
.tp
.i number
the official number for this protocol as it will appear within the ip
header.
.tp
.i aliases
optional aliases for the protocol.
.pp
this file might be distributed over a network using a network-wide
naming service like yellow pages/nis or bind/hesiod.
.sh files
.tp
.i /etc/protocols
the protocols definition file.
.sh see also
.br getprotoent (3)
.pp
.ur http://www.iana.org\:/assignments\:/protocol\-numbers
.ue
.sh colophon
this page is part of release 5.13 of the linux
.i man-pages
project.
a description of the project,
information about reporting bugs,
and the latest version of this page,
can be found at
\%https://www.kernel.org/doc/man\-pages/.
.\" copyright (c) bruno haible <haible@clisp.cons.org>
.\"
.\" %%%license_start(gplv2+_doc_onepara)
.\" this is free documentation; you can redistribute it and/or
.\" modify it under the terms of the gnu general public license as
.\" published by the free software foundation; either version 2 of
.\" the license, or (at your option) any later version.
.\" %%%license_end
.\"
.\" references consulted:
.\" gnu glibc-2 source code and manual
.\" dinkumware c library reference http://www.dinkumware.com/
.\" opengroup's single unix specification http://www.unix-systems.org/online.html
.\" iso/iec 9899:1999
.\"
.th mbsrtowcs 3 2021-03-22 "gnu" "linux programmer's manual"
.sh name
mbsrtowcs \- convert a multibyte string to a wide-character string
.sh synopsis
.nf
.b #include <wchar.h>
.pp
.bi "size_t mbsrtowcs(wchar_t *restrict " dest ", const char **restrict " src ,
.bi " size_t " len ", mbstate_t *restrict " ps );
.fi
.sh description
if
.i dest
is not null, the
.br mbsrtowcs ()
function converts the
multibyte string
.i *src
to a wide-character string starting at
.ir dest .
at most
.i len
wide characters are written to
.ir dest .
the shift state
.i *ps
is updated.
the conversion is effectively performed by repeatedly
calling
.i "mbrtowc(dest, *src, n, ps)"
where
.i n
is some
positive number, as long as this call succeeds, and then incrementing