From a0ebb5f96c7632ef576f71fc5a2cdb24e3bf94be Mon Sep 17 00:00:00 2001
From: Ian Bell <ian.h.bell@gmail.com>
Date: Sun, 2 Aug 2015 18:10:26 -0600
Subject: [PATCH] Implement surface_tension for tabular backends; closes #760

---
 src/Backends/Tabular/TabularBackends.h | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/Backends/Tabular/TabularBackends.h b/src/Backends/Tabular/TabularBackends.h
index 25624f27..14a09b6f 100644
--- a/src/Backends/Tabular/TabularBackends.h
+++ b/src/Backends/Tabular/TabularBackends.h
@@ -811,7 +811,12 @@ class TabularBackend : public AbstractState
             this->AS->set_T(_T);
             return this->AS->cp0molar();
         }
-
+        /// Calculate the surface tension using the wrapped class (fast enough)
+        CoolPropDbl calc_surface_tension(void){
+            this->AS->set_T(_T);
+            return this->AS->surface_tension();
+            this->AS->set_T(_HUGE);
+        }
         CoolPropDbl calc_p(void);
         CoolPropDbl calc_T(void);
         CoolPropDbl calc_rhomolar(void);