POSIX_MEMALIGN(3) BSD Library Functions Manual POSIX_MEMALIGN(3)NAMEposix_memalign — aligned memory allocation
Standard C Library (libc, -lc)
posix_memalign(void **ptr, size_t alignment, size_t size);
The posix_memalign() function allocates size bytes of memory such that
the allocation's base address is an even multiple of alignment, and
returns the allocation in the value pointed to by ptr.
The requested alignment must be a power of 2 at least as large as
Memory that is allocated via posix_memalign() can be used as an argument
in subsequent calls to realloc(3), reallocf(3), and free(3).
The posix_memalign() function returns the value 0 if successful; other‐
wise it returns an error value.
The posix_memalign() function will fail if:
[EINVAL] The alignment parameter is not a power of 2 at least
as large as sizeof(void *).
[ENOMEM] Memory allocation error.
SEE ALSOfree(3), malloc(3), realloc(3), reallocf(3), valloc(3)STANDARDS
The posix_memalign() function conforms to IEEE Std 1003.1-2001
The posix_memalign() function first appeared in FreeBSD 7.0.
BSD January 11, 2006 BSD