.TH LIBSIMPLE_ENPOSIX_MEMALIGN 3 libsimple
.SH NAME
libsimple_enposix_memalign \- allocate memory with custom alignment or die

.SH SYNOPSIS
.nf
#include <libsimple.h>

inline void libsimple_enposix_memalign(int \fIstatus\fP, void **\fImemptr\fP, size_t \fIalignment\fP, size_t \fIn\fP);
inline void libsimple_eposix_memalign(void **\fImemptr\fP, size_t \fIalignment\fP, size_t \fIn\fP);

#ifndef enposix_memalign
# define enposix_memalign libsimple_enposix_memalign
#endif
#ifndef eposix_memalign
# define eposix_memalign libsimple_eposix_memalign
#endif
.fi
.PP
Link with
.IR \-lsimple .

.SH DESCRIPTION
The
.BR libsimple_enposix_memalign ()
and
.BR libsimple_eposix_memalign ()
functions allocate
.I n
uninitialised bytes to the heap and store a
pointer with an alignment of
.I alignment
bytes to the allocated memory in
.IR memptr .
The function
.BR free (3)
shall be called with the pointer stored in
.I memptr
as input when the allocated memory is no longer needed.
.I *memptr
remains unmodified on failure.
.PP
The
.BR libsimple_enposix_memalign ()
and
.BR libsimple_eposix_memalign ()
functions will terminate the process if the memory
cannot be allocated of if the user tries to allocate
0 bytes, by calling the
.BR libsimple_enprintf ()
and
.BR libsimple_eprintf ()
functions, respectively.
On failure, the process's exit value will be
.I status
if the
.BR libsimple_enposix_memalign ()
function is used or
.IR libsimple_default_failure_exit (3)
if the
.BR libsimple_eposix_memalign ()
function is used. Failure include,
.I alignment
not being a power of two, or
.I alignment
not being a multiple of
.IR "sizeof(void *)" .
.PP
The
.BR libsimple_enposix_memalign ()
and
.BR libsimple_eposix_memalign ()
functions behaviour is unspecified if
.I n
is 0.

.SH RETURN VALUE
The
.BR libsimple_enposix_memalign ()
and
.BR libsimple_eposix_memalign ()
functions do not return a value, but
terminated the process on failure.

.SH ERRORS
The
.BR libsimple_enposix_memalign ()
and
.BR libsimple_eposix_memalign ()
functions will terminate the process on failure.

.SH ATTRIBUTES
For an explanation of the terms used in this section, see
.BR attributes (7).
.TS
allbox;
lb lb lb
l l l.
Interface	Attribute	Value
T{
.BR libsimple_enposix_memalign (),
.br
.BR libsimple_eposix_memalign ()
T}	Thread safety	MT-Safe
T{
.BR libsimple_enposix_memalign (),
.br
.BR libsimple_eposix_memalign ()
T}	Async-signal safety	AS-Safe
T{
.BR libsimple_enposix_memalign (),
.br
.BR libsimple_eposix_memalign ()
T}	Async-cancel safety	AC-Safe
.TE

.SH EXAMPLES
None.

.SH APPLICATION USAGE
None.

.SH RATIONALE
None.

.SH FUTURE DIRECTIONS
None.

.SH NOTES
None.

.SH HISTORY
libsimple 1.1

.SH BUGS
None.

.SH SEE ALSO
.BR libsimple_enmalloc (3),
.BR libsimple_mallocz (3),
.BR libsimple_vmallocn (3),
.BR libsimple_vmalloczn (3),
.BR libsimple_encalloc (3),
.BR libsimple_vcallocn (3),
.BR libsimple_enrealloc (3),
.BR libsimple_reallocarray (3),
.BR libsimple_vreallocn (3),
.BR libsimple_reallocf (3),
.BR libsimple_reallocarrayf (3),
.BR libsimple_vreallocfn (3),
.BR libsimple_aligned_realloc (3),
.BR libsimple_aligned_reallocarray (3),
.BR libsimple_aligned_vreallocn (3),
.BR libsimple_aligned_reallocf (3),
.BR libsimple_aligned_reallocarrayf (3),
.BR libsimple_aligned_vreallocfn (3),
.BR libsimple_memalign (3),
.BR libsimple_memalignz (3),
.BR libsimple_vmemalignn (3),
.BR libsimple_vmemalignzn (3),
.BR libsimple_posix_memalignz (3),
.BR libsimple_vposix_memalignn (3),
.BR libsimple_vposix_memalignzn (3),
.BR libsimple_enaligned_alloc (3),
.BR libsimple_aligned_allocz (3),
.BR libsimple_valigned_allocn (3),
.BR libsimple_valigned_alloczn (3),
.BR libsimple_pvalloc (3),
.BR libsimple_pvallocz (3),
.BR libsimple_vpvallocn (3),
.BR libsimple_vpvalloczn (3),
.BR libsimple_valloc (3),
.BR libsimple_vallocz (3),
.BR libsimple_vvallocn (3),
.BR libsimple_vvalloczn (3),
.BR libsimple_vmemalloc (3),
.BR libsimple_varrayalloc (3),
.BR posix_memalign (3)