expr: doxygen comment

diff --git a/lib/expr/exexpr.c b/lib/expr/exexpr.c
index 7af1bb4862a0a69fde96c09d7d519a275cd9209e..d68704f9fdf1c0a5e40d6bfdd60588fcdb3f973a 100644 (file)
--- a/lib/expr/exexpr.c
+++ b/lib/expr/exexpr.c
@@ -40,3 +40,8 @@ exexpr(Expr_t* ex, const char* name, Exid_t* sym, int type)
        }
        return 0;
 }
+
+/**
+ * @dir lib/expr
+ * @brief expression library for lib/gvpr/, API expr.h
+ */