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libzmq/doc/zmq_errno.adoc
Francesco Montorsi b6ca9b2983 Feature: modernize API documentation
* migrate from the old, unmaintained "asciidoc-py" tool to the new "asciidoctor" generator
* migrate from asciidoc-py syntax to the modern Asciidoc syntax (especially page titles and section titles)
* remove the need of "xmlto" utility to create the manpage output; use asciidoctor for that
* add HTML output support to the doc/Makefile by using asciidoctor
* change API documentation files extension from .txt to .adoc to make it more explicit that they are Asciidoc-encoded (as a bonus several IDE plugins will autodetect the .adoc format as Asciidoc)
* remove asciidoc.conf: asciidoctor does not support that; this also required replacing the macro linkzmq into all documentation pages
* add a new Github action CI do deploy to Github Pages the static HTMLs produced by Asciidoctors
* removed references to the "xmlto" and "a2x" tools from the build and packaging systems: Asciidoctor can convert the documentation directly to e.g. pdf (via extended converters) and anyway there was no code/target for using "xmlto" and "a2x" tools anyway
2023-10-25 23:59:38 +02:00

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= zmq_errno(3)
== NAME
zmq_errno - retrieve value of errno for the calling thread
== SYNOPSIS
*int zmq_errno (void);*
== DESCRIPTION
The _zmq_errno()_ function shall retrieve the value of the 'errno' variable for
the calling thread.
The _zmq_errno()_ function is provided to assist users on non-POSIX systems who
are experiencing issues with retrieving the correct value of 'errno' directly.
Specifically, users on Win32 systems whose application is using a different C
run-time library from the C run-time library in use by 0MQ will need to use
_zmq_errno()_ for correct operation.
IMPORTANT: Users not experiencing issues with retrieving the correct value of
'errno' should not use this function and should instead access the 'errno'
variable directly.
== RETURN VALUE
The _zmq_errno()_ function shall return the value of the 'errno' variable for
the calling thread.
== ERRORS
No errors are defined.
== SEE ALSO
xref:zmq.adoc[zmq]
== AUTHORS
This page was written by the 0MQ community. To make a change please
read the 0MQ Contribution Policy at <http://www.zeromq.org/docs:contributing>.