Marco van de Voort wrote: > In our previous episode, Jonas Maebe said: >>> Or do we have to allocate more bytes for blocks that are a multiple of 8? >> FPC's default memory manager even guarantees 16 byte alignment (for vectors). > > So a possible solution is to allocate 16-sizeof(ptruint) bytes more? > > for 32-bit that would mean: > > <12 bytes slack><size><data> >
Note that fftw_getmem and fftw_freemem (packages/fftw/src/fftw_s.pas) already contain the code to allocate always aligned pointer. (They allocate 15 bytes more for 16-bytes aligmnment, and store the value of original unaligned pointer to pass it to free.) One could use these as a workaround, to get aligned pointers from any GetMem/FreeMem implementation. Michalis _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
