'\" t
.\"     Title: zmq_errno
.\"    Author: [see the "AUTHORS" section]
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 10/23/2023
.\"    Manual: 0MQ Manual
.\"    Source: 0MQ 4.3.5
.\"  Language: English
.\"
.TH "ZMQ_ERRNO" "3" "10/23/2023" "0MQ 4\&.3\&.5" "0MQ Manual"
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.SH "NAME"
zmq_errno \- retrieve value of errno for the calling thread
.SH "SYNOPSIS"
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\fBint zmq_errno (void);\fR
.SH "DESCRIPTION"
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The \fIzmq_errno()\fR function shall retrieve the value of the \fIerrno\fR variable for the calling thread\&.
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The \fIzmq_errno()\fR function is provided to assist users on non\-POSIX systems who are experiencing issues with retrieving the correct value of \fIerrno\fR 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 \fIzmq_errno()\fR for correct operation\&.
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Users not experiencing issues with retrieving the correct value of \fIerrno\fR should not use this function and should instead access the \fIerrno\fR variable directly\&.
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.SH "RETURN VALUE"
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The \fIzmq_errno()\fR function shall return the value of the \fIerrno\fR variable for the calling thread\&.
.SH "ERRORS"
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No errors are defined\&.
.SH "SEE ALSO"
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\fBzmq\fR(7)
.SH "AUTHORS"
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This page was written by the 0MQ community\&. To make a change please read the 0MQ Contribution Policy at \m[blue]\fBhttp://www\&.zeromq\&.org/docs:contributing\fR\m[]\&.