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+.\" Copyright (c) 2001-2003 The Open Group, All Rights Reserved 
+.TH "POSIX_MEMALIGN" P 2003 "IEEE/The Open Group" "POSIX Programmer's Manual"
+.\" posix_memalign 
+.SH NAME
+posix_memalign \- aligned memory allocation (\fBADVANCED REALTIME\fP)
+.SH SYNOPSIS
+.LP
+\fB#include <stdlib.h>
+.br
+.sp
+int posix_memalign(void **\fP\fImemptr\fP\fB, size_t\fP \fIalignment\fP\fB,
+size_t\fP \fIsize\fP\fB); \fP
+\fB
+.br
+\fP
+.SH DESCRIPTION
+.LP
+The \fIposix_memalign\fP() function shall allocate \fIsize\fP bytes
+aligned on a boundary specified by \fIalignment\fP, and
+shall return a pointer to the allocated memory in \fImemptr\fP. The
+value of \fIalignment\fP shall be a multiple of
+\fIsizeof\fP( \fBvoid *\fP), that is also a power of two. Upon successful
+completion, the value pointed to by \fImemptr\fP shall
+be a multiple of \fIalignment\fP.
+.LP
+The
+\fIfree\fP() function shall deallocate memory that has previously
+been allocated by
+\fIposix_memalign\fP(). 
+.SH RETURN VALUE
+.LP
+Upon successful completion, \fIposix_memalign\fP() shall return zero;
+otherwise, an error number shall be returned to indicate
+the error.
+.SH ERRORS
+.LP
+The \fIposix_memalign\fP() function shall fail if:
+.TP 7
+.B EINVAL
+The value of the alignment parameter is not a power of two multiple
+of \fIsizeof\fP( \fBvoid *\fP).
+.TP 7
+.B ENOMEM
+There is insufficient memory available with the requested alignment.
+.sp
+.LP
+\fIThe following sections are informative.\fP
+.SH EXAMPLES
+.LP
+None.
+.SH APPLICATION USAGE
+.LP
+The \fIposix_memalign\fP() function is part of the Advisory Information
+option and need not be provided on all
+implementations.
+.SH RATIONALE
+.LP
+None.
+.SH FUTURE DIRECTIONS
+.LP
+None.
+.SH SEE ALSO
+.LP
+\fIfree\fP() , \fImalloc\fP() , the Base Definitions volume of
+IEEE\ Std\ 1003.1-2001, \fI<stdlib.h>\fP
+.SH COPYRIGHT
+Portions of this text are reprinted and reproduced in electronic form
+from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
+-- Portable Operating System Interface (POSIX), The Open Group Base
+Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
+Electrical and Electronics Engineers, Inc and The Open Group. In the
+event of any discrepancy between this version and the original IEEE and
+The Open Group Standard, the original IEEE and The Open Group Standard
+is the referee document. The original Standard can be obtained online at
+http://www.opengroup.org/unix/online.html .