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33 .Nd aligned memory allocation
39 .Fn posix_memalign "void **ptr" "size_t alignment" "size_t size"
45 bytes of memory such that the allocation's base address is an even multiple of
47 and returns the allocation in the value pointed to by
52 must be a power of 2 at least as large as
55 Memory that is allocated via
57 can be used as an argument in subsequent calls to
62 .Sh IMPLEMENTATION NOTES
65 function is directly supported by matching the requested alignment against a zone
66 of the slab allocator with a compatible chunking, and using the power-of-2
67 shortcut whenever possible.
68 Alignments beyond those supported by the zone mechanism are still
74 is thus able to take advantage of the slab allocator to produce
75 well-fitted results when the requests are reasonable.
79 function returns the value 0 if successful; otherwise it returns an error value.
83 function will fail if:
88 parameter is not a power of 2 at least as large as
91 Memory allocation error.