memalign.c

/* Mike F */
#include <stdint.h>
void *memalign( int align, size_t size ) {
    void *mem = malloc( size + (align-1) + sizeof(void*) );
    if(!mem) return 0;
    
    char *amem = ((char*)mem) + sizeof(void*);
    amem += (align - ((uintptr_t)amem & (align - 1)) & (align-1));

    ((void**)amem)[-1] = mem;
    return amem;
}
void memfree( void *mem ) {
    if(mem) free( ((void**)mem)[-1] );
}