valloc - request memory aligned with page boundary

Syntax	#include <stdlib.h> void *valloc (size_t size);
Description	valloc() has the same effect as malloc(), except that the allocated memory area is aligned with the page border, i.e. an integer multiple of the return value of sysconf(_SC_PAGESIZE). If size = 0, valloc() returns a null pointer. errno is not set in this case.
Return val.	Pointer to the allocated memory area
		if successful.
	Null pointer	otherwise. errno is set to indicate the error.
Errors	valloc() will fail if
	ENOMEM	There is not enough memory available.
Notes	Instead of valloc(), applications should use malloc() or mmap(). In systems with a large page size, it may not be possible to call valloc() successfully. valloc() will no longer be supported in the next version of the X/Open standard.
See also	malloc(), sysconf(), stdlib.h.