#include <errno.h>

extern C_LINKAGE int

posix_memalign(void **memptr, size_t alignment, size_t userSize)

{

	/*

	 * Per standard, posix_memalign returns EINVAL when alignment

	 * is not a power of two or power of sizeof(void*).  efence

	 * doesn't check the value of alignment in memalign, but then

	 * again, memalign was never specified very well, and on some

	 * systems odd alignments could indeed have been allowed.

	 */

	if ((alignment & (alignment - 1))

	    || alignment % sizeof (void *))

		return EINVAL;

	void *ptr = memalign (alignment, userSize);

	if (ptr == NULL)

		return ENOMEM;

	*memptr = ptr;

	return 0;

}