.\"  Automatically generated man page, do not edit
.TH QB_ATOMIC_INT_COMPARE_AND_EXCHANGE 3 2020-10-31 "LIBQB" "libqb Programmer's Manual"
.SH NAME
qb_atomic_int_compare_and_exchange \- Compares oldval with the integer pointed to by atomic and if they are equal, atomically exchanges *atomic with newval. 

.SH SYNOPSIS
.nf
.B #include <qb/qbatomic.h>
.sp
\fBint32_t qb_atomic_int_compare_and_exchange\fP(
    \fBvolatile int32_t QB_GNUC_MAY_ALIAS   *\fP\fIatomic\fP,
    \fBint32_t                               \fP\fIoldval\fP,
    \fBint32_t                               \fP\fInewval\fP
);
.fi
.SH PARAMS
\fBatomic \fP\fIa pointer to an integer \fP
.PP
\fBoldval \fP\fIthe assumed old value of *atomic \fP
.PP
\fBnewval \fP\fIthe new value of *atomic\fP
.PP
.SH DESCRIPTION
.PP
Also acts as a memory barrier.
.RE
.SH RETURN VALUE
.PP
QB_TRUE, if *atomic was equal oldval. QB_FALSE otherwise. 
.PP
.SH SEE ALSO
.PP
.nh
.ad l
\fIqb_atomic_int_set\fR(3), \fIqb_atomic_int_get\fR(3), \fIqb_atomic_int_add\fR(3), \fIqb_atomic_init\fR(3), \fIqb_atomic_pointer_get\fR(3), \fIqb_atomic_int_exchange_and_add\fR(3), \fIqb_atomic_pointer_compare_and_exchange\fR(3), \fIqb_atomic_pointer_set\fR(3)
.ad
.hy
.SH "COPYRIGHT"
.PP
Copyright (C) 2010-2020 Red Hat, Inc. All rights reserved.