1 files changed, 10 insertions, 8 deletions
diff --git a/extern/rangetree/range_tree_c_api.h b/extern/rangetree/range_tree_c_api.h
index af6a7b161a8..6abfb6bd55e 100644
--- a/extern/rangetree/range_tree_c_api.h
+++ b/extern/rangetree/range_tree_c_api.h
@@ -14,8 +14,8 @@
    02110-1301, USA.
 */
 
-#ifndef RANGE_TREE_C_API_H
-#define RANGE_TREE_C_API_H
+#ifndef __RANGE_TREE_C_API_H__
+#define __RANGE_TREE_C_API_H__
 
 #ifdef __cplusplus
 extern "C" {
@@ -35,17 +35,19 @@ void range_tree_uint_free(RangeTreeUInt *rt);
 
 void range_tree_uint_take(RangeTreeUInt *rt, unsigned v);
 
+bool range_tree_uint_retake(RangeTreeUInt *rt, unsigned v);
+
 unsigned range_tree_uint_take_any(RangeTreeUInt *rt);
 
 void range_tree_uint_release(RangeTreeUInt *rt, unsigned v);
 
-int range_tree_uint_has(const RangeTreeUInt *rt, unsigned v);
+bool range_tree_uint_has(const RangeTreeUInt *rt, unsigned v);
 
-int range_tree_uint_has_range(const RangeTreeUInt *rt,
-							  unsigned vmin,
-							  unsigned vmax);
+bool range_tree_uint_has_range(
+        const RangeTreeUInt *rt,
+        unsigned vmin, unsigned vmax);
 
-int range_tree_uint_empty(const RangeTreeUInt *rt);
+bool range_tree_uint_empty(const RangeTreeUInt *rt);
 
 unsigned range_tree_uint_size(const RangeTreeUInt *rt);
 
@@ -57,4 +59,4 @@ unsigned int range_tree_uint_allocation_lower_bound(const RangeTreeUInt *rt);
 }
 #endif
 
-#endif /* __DUALCON_H__ */
+#endif /* __RANGE_TREE_C_API_H__ */