* void *vlc_memalign( size_t align, size_t size, void **pp_orig )
* *pp_orig is the pointer that has to be freed afterwards.
*/
-#if 0
-#ifdef HAVE_POSIX_MEMALIGN
-# define vlc_memalign(align,size,pp_orig) \
- ( !posix_memalign( pp_orig, align, size ) ? *(pp_orig) : NULL )
-#endif
-#endif
-#ifdef HAVE_MEMALIGN
- /* Some systems have memalign() but no declaration for it */
- void * memalign( size_t align, size_t size );
-
-# define vlc_memalign(pp_orig,align,size) \
- ( *(pp_orig) = memalign( align, size ) )
-
+#if defined (HAVE_POSIX_MEMALIGN)
+static inline
+void *vlc_memalign (size_t align, size_t size, void **pp)
+{
+ return posix_memalign (pp, align, size) ? NULL : *pp;
+}
+#elif defined (HAVE_MEMALIGN)
+static inline
+void *vlc_memalign (size_t align, size_t size, void **pp)
+{
+ return *pp = memalign (align, size);
+}
#else /* We don't have any choice but to align manually */
-# define vlc_memalign(pp_orig,align,size) \
- (( *(pp_orig) = malloc( size + align - 1 )) \
- ? (void *)( (((unsigned long)*(pp_orig)) + (unsigned long)(align-1) ) \
- & (~(unsigned long)(align-1)) ) \
- : NULL )
-
+static inline
+void *vlc_memalign (size_t align, size_t size, void **pp)
+{
+ unsigned char *ptr;
+
+ if (align < 1)
+ return NULL;
+
+ align--;
+ ptr = malloc (size + --align);
+ if (ptr == NULL)
+ return NULL;
+
+ *pp = ptr;
+ ptr += align;
+ return (void *)(((uintptr_t)ptr) & ~align);
+}
#endif