.TH LIBSIMPLE_ENPOSIX_MEMALIGN 3 2018-11-03 libsimple
.SH NAME
libsimple_enposix_memalign \- allocate memory with custom alignment or die
.SH SYNOPSIS
.nf
#include <libsimple.h>
static inline void libsimple_enposix_memalign(int \fIstatus\fP, void **\fImemptr\fP, size_t \fIalignment\fP, size_t \fIn\fP);
static 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 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_vreallocn (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 posix_memalign (3)
