'\" te
.\" Copyright (c) 2005, Sun Microsystems, Inc. All Rights Reserved.
.\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License").  You may not use this file except in compliance with the License.
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.TH atomic_or 3C "13 May 2005" "SunOS 5.11" "Standard C Library Functions"
.SH NAME
atomic_or, atomic_or_8, atomic_or_uchar, atomic_or_16, atomic_or_ushort,
atomic_or_32, atomic_or_uint, atomic_or_ulong, atomic_or_64, atomic_or_8_nv,
atomic_or_uchar_nv, atomic_or_16_nv, atomic_or_ushort_nv, atomic_or_32_nv,
atomic_or_uint_nv, atomic_or_ulong_nv, atomic_or_64_nv \- atomic OR operations
.SH SYNOPSIS
.LP
.nf
#include <atomic.h>

\fBvoid\fR \fBatomic_or_8\fR(\fBvolatile uint8_t *\fR\fItarget\fR, \fBuint8_t\fR \fIbits\fR);
.fi

.LP
.nf
\fBvoid\fR \fBatomic_or_uchar\fR(\fBvolatile uchar_t *\fR\fItarget\fR, \fBuchar_t\fR \fIbits\fR);
.fi

.LP
.nf
\fBvoid\fR \fBatomic_or_16\fR(\fBvolatile uint16_t *\fR\fItarget\fR, \fBuint16_t\fR \fIbits\fR);
.fi

.LP
.nf
\fBvoid\fR \fBatomic_or_ushort\fR(\fBvolatile ushort_t *\fR\fItarget\fR, \fBushort_t\fR \fIbits\fR);
.fi

.LP
.nf
\fBvoid\fR \fBatomic_or_32\fR(\fBvolatile uint32_t *\fR\fItarget\fR, \fBuint32_t\fR \fIbits\fR);
.fi

.LP
.nf
\fBvoid\fR \fBatomic_or_uint\fR(\fBvolatile uint_t *\fR\fItarget\fR, \fBuint_t\fR \fIbits\fR);
.fi

.LP
.nf
\fBvoid\fR \fBatomic_or_ulong\fR(\fBvolatile ulong_t *\fR\fItarget\fR, \fBulong_t\fR \fIbits\fR);
.fi

.LP
.nf
\fBvoid\fR \fBatomic_or_64\fR(\fBvolatile uint64_t *\fR\fItarget\fR, \fBuint64_t\fR \fIbits\fR);
.fi

.LP
.nf
\fBuint8_t\fR \fBatomic_or_8_nv\fR(\fBvolatile uint8_t *\fR\fItarget\fR, \fBuint8_t\fR \fIbits\fR);
.fi

.LP
.nf
\fBuchar_t\fR \fBatomic_or_uchar_nv\fR(\fBvolatile uchar_t *\fR\fItarget\fR, \fBuchar_t\fR \fIbits\fR);
.fi

.LP
.nf
\fBuint16_t\fR \fBatomic_or_16_nv\fR(\fBvolatile uint16_t *\fR\fItarget\fR, \fBuint16_t\fR \fIbits\fR);
.fi

.LP
.nf
\fBushort_t\fR \fBatomic_or_ushort_nv\fR(\fBvolatile ushort_t *\fR\fItarget\fR, \fBushort_t\fR \fIbits\fR);
.fi

.LP
.nf
\fBuint32_t\fR \fBatomic_or_32_nv\fR(\fBvolatile uint32_t *\fR\fItarget\fR, \fBuint32_t\fR \fIbits\fR);
.fi

.LP
.nf
\fBuint_t\fR \fBatomic_or_uint_nv\fR(\fBvolatile uint_t *\fR\fItarget\fR, \fBuint_t\fR \fIbits\fR);
.fi

.LP
.nf
\fBulong_t\fR \fBatomic_or_ulong_nv\fR(\fBvolatile ulong_t *\fR\fItarget\fR, \fBulong_t\fR \fIbits\fR);
.fi

.LP
.nf
\fBuint64_t\fR \fBatomic_or_64_nv\fR(\fBvolatile uint64_t *\fR\fItarget\fR, \fBuint64_t\fR \fIbits\fR);
.fi

.SH DESCRIPTION
.sp
.LP
These functions enable the the bitwise OR of \fIbits\fR to the value stored in
\fItarget\fR to occur in an atomic manner.
.SH RETURN VALUES
.sp
.LP
The *\fB_nv()\fR variants of these functions return the new value of
\fItarget\fR.
.SH ERRORS
.sp
.LP
No errors are defined.
.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
tab() box;
cw(2.75i) |cw(2.75i) 
lw(2.75i) |lw(2.75i) 
.
ATTRIBUTE TYPEATTRIBUTE VALUE
_
Interface StabilityStable
_
MT-LevelMT-Safe
.TE

.SH SEE ALSO
.sp
.LP
\fBatomic_add\fR(3C), \fBatomic_and\fR(3C), \fBatomic_bits\fR(3C),
\fBatomic_cas\fR(3C), \fBatomic_dec\fR(3C), \fBatomic_inc\fR(3C),
\fBatomic_swap\fR(3C), \fBmembar_ops\fR(3C), \fBattributes\fR(5),
\fBatomic_ops\fR(9F)
.SH NOTES
.sp
.LP
The *\fB_nv()\fR variants are substantially more expensive on some platforms
than the versions that do not return values. Do not use them unless you need to
know the new value \fBatomically\fR.