'\" t
.\"     Title: zmq_atomic_counter_dec
.\"    Author: [see the "AUTHORS" section]
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 03/20/2024
.\"    Manual: 0MQ Manual
.\"    Source: 0MQ 4.3.5
.\"  Language: English
.\"
.TH "ZMQ_ATOMIC_COUNTER_D" "3" "03/20/2024" "0MQ 4\&.3\&.5" "0MQ Manual"
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.SH "NAME"
zmq_atomic_counter_dec \- decrement an atomic counter
.SH "SYNOPSIS"
.sp
\fBint zmq_atomic_counter_dec (void *counter);\fR
.SH "DESCRIPTION"
.sp
The \fIzmq_atomic_counter_dec\fR function decrements an atomic counter in a threadsafe fashion\&. This function uses platform specific atomic operations\&.
.SH "RETURN VALUE"
.sp
The \fIzmq_atomic_counter_dec()\fR function returns 1 if the counter is greater than zero after decrementing, or zero if the counter reached zero\&.
.SH "EXAMPLE"
.PP
\fBTest code for atomic counters\fR. 
.sp
.if n \{\
.RS 4
.\}
.nf
void *counter = zmq_atomic_counter_new ();
assert (zmq_atomic_counter_value (counter) == 0);
assert (zmq_atomic_counter_inc (counter) == 0);
assert (zmq_atomic_counter_inc (counter) == 1);
assert (zmq_atomic_counter_inc (counter) == 2);
assert (zmq_atomic_counter_value (counter) == 3);
assert (zmq_atomic_counter_dec (counter) == 1);
assert (zmq_atomic_counter_dec (counter) == 1);
assert (zmq_atomic_counter_dec (counter) == 0);
zmq_atomic_counter_set (counter, 2);
assert (zmq_atomic_counter_dec (counter) == 1);
assert (zmq_atomic_counter_dec (counter) == 0);
zmq_atomic_counter_destroy (&counter);
return 0;
.fi
.if n \{\
.RE
.\}
.sp
.SH "SEE ALSO"
.sp
\fBzmq_atomic_counter_new\fR(3) \fBzmq_atomic_counter_set\fR(3) \fBzmq_atomic_counter_inc\fR(3) \fBzmq_atomic_counter_value\fR(3) \fBzmq_atomic_counter_destroy\fR(3)
.SH "AUTHORS"
.sp
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[]\&.