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* move __memalign declaration to malloc_impl.hRich Felker2018-09-121-2/+1
| | | | | | | | the malloc-implementation-private header is the only right place for this, because, being in the reserved namespace, __memalign is not interposable and thus not valid to use anywhere else. anything outside of the malloc implementation must call an appropriate-namespace public function (aligned_alloc or posix_memalign).
* move core memalign code from aligned_alloc to __memalignRich Felker2013-07-041-1/+3
| | | | | | | | | | | | there are two motivations for this change. one is to avoid gratuitously depending on a C11 symbol for implementing a POSIX function. the other pertains to the documented semantics. C11 does not define any behavior for aligned_alloc when the length argument is not a multiple of the alignment argument. posix_memalign on the other hand places no requirements on the length argument. using __memalign as the implementation of both, rather than trying to implement one in terms of the other when their documented contracts differ, eliminates this confusion.
* move alignment check from aligned_alloc to posix_memalignRich Felker2013-07-041-0/+1
| | | | | | | | C11 has no requirement that the alignment be a multiple of sizeof(void*), and in fact seems to require any "valid alignment supported by the implementation" to work. since the alignment of char is 1 and thus a valid alignment, an alignment argument of 1 should be accepted.
* implement "low hanging fruit" from C11Rich Felker2012-08-251-40/+3
| | | | | | | | based on Gregor's patch sent to the list. includes: - stdalign.h - removing gets in C11 mode - adding aligned_alloc and adjusting other functions to use it - adding 'x' flag to fopen for exclusive mode
* posix_memalign should fail if size is not a multiple of sizeof(void *)Rich Felker2011-06-291-1/+1
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* initial check-in, version 0.5.0 v0.5.0Rich Felker2011-02-121-0/+47