trusty (3) posix_memalign.3posix.gz

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NAME
       posix_memalign - aligned memory allocation (ADVANCED REALTIME)


SYNOPSIS
       #include <stdlib.h>

       int posix_memalign(void **memptr, size_t alignment, size_t size);


DESCRIPTION
       The posix_memalign() function shall allocate size bytes aligned on a boundary specified by alignment, and
       shall return a pointer to the allocated memory in memptr. The value of alignment shall be a  multiple  of
       sizeof(  void *), that is also a power of two. Upon successful completion, the value pointed to by memptr
       shall be a multiple of alignment.

       The free() function shall deallocate memory that has previously been allocated by posix_memalign().


RETURN VALUE
       Upon successful completion, posix_memalign() shall return zero;  otherwise,  an  error  number  shall  be
       returned to indicate the error.


ERRORS
       The posix_memalign() function shall fail if:

       EINVAL The value of the alignment parameter is not a power of two multiple of sizeof( void *).

       ENOMEM There is insufficient memory available with the requested alignment.

       The following sections are informative.


EXAMPLES
       None.


APPLICATION USAGE
       The  posix_memalign() function is part of the Advisory Information option and need not be provided on all
       implementations.


RATIONALE
       None.


FUTURE DIRECTIONS
       None.


SEE ALSO
       free() , malloc() , the Base Definitions volume of IEEE Std 1003.1-2001, <stdlib.h>


       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 .