diff options
Diffstat (limited to 'cpukit/score/inline/rtems/score/rbtree.inl')
| -rw-r--r-- | cpukit/score/inline/rtems/score/rbtree.inl | 16 |
1 files changed, 13 insertions, 3 deletions
diff --git a/cpukit/score/inline/rtems/score/rbtree.inl b/cpukit/score/inline/rtems/score/rbtree.inl index bbc60477c8..ef653e5628 100644 --- a/cpukit/score/inline/rtems/score/rbtree.inl +++ b/cpukit/score/inline/rtems/score/rbtree.inl @@ -31,6 +31,16 @@ * @{ */ +/** + * @brief Get the direction opposite to @a the_dir + */ +RTEMS_INLINE_ROUTINE RBTree_Direction _RBTree_Opposite_direction( + RBTree_Direction the_dir +) +{ + return (!the_dir); +} + /** @brief Set off rbtree * * This function sets the parent and child fields of the @a node to NULL @@ -435,10 +445,10 @@ RTEMS_INLINE_ROUTINE void _RBTree_Rotate( { RBTree_Node *c; if (the_node == NULL) return; - if (the_node->child[(1-dir)] == NULL) return; + if (the_node->child[_RBTree_Opposite_direction(dir)] == NULL) return; - c = the_node->child[(1-dir)]; - the_node->child[(1-dir)] = c->child[dir]; + c = the_node->child[_RBTree_Opposite_direction(dir)]; + the_node->child[_RBTree_Opposite_direction(dir)] = c->child[dir]; if (c->child[dir]) c->child[dir]->parent = the_node; |