+#define hweight8(x) yaffs_hweight8(x)
+#define hweight32(x) yaffs_hweight32(x)
+
+void yaffs_qsort(void *aa, size_t n, size_t es,
+ int (*cmp)(const void *, const void *));
+
+#define yaffs_sort(base, n, sz, cmp_fn) yaffs_qsort(base, n, sz, cmp_fn)
+