1 files changed, 1 insertions, 0 deletions

diff --git a/engine.h b/engine.h
index 3ec3dcf..eaa7dc6 100644
--- a/engine.h
+++ b/engine.h
@@ -6,3 +6,4 @@ typedef struct {
 } Engine;
 
 void init_engine(Engine *e);
+VolumeFlowRate volume_flow_rate(const Engine *e);