mem: minor simplification of the alignment hack code

Idea-by: wanzhang Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
2012-12-14 05:36:22 +01:00 · 2012-12-14 05:36:22 +01:00 · 58f30175e1
parent d18706244f
commit 58f30175e1
1 changed files with 1 additions and 1 deletions
--- a/libavutil/mem.c
+++ b/libavutil/mem.c
@ -84,7 +84,7 @@ void *av_malloc(size_t size)
    ptr = malloc(size + ALIGN);
    if (!ptr)
        return ptr;
-    diff              = ((-(long)ptr - 1)&(ALIGN - 1)) + 1;
+    diff              = ((~(long)ptr)&(ALIGN - 1)) + 1;
    ptr               = (char *)ptr + diff;
    ((char *)ptr)[-1] = diff;
 #elif HAVE_POSIX_MEMALIGN