From cc794bacce3ac4d91d19f9872b318691b8300183 Mon Sep 17 00:00:00 2001
From: hubertus <hubertus@7ce873d0-865f-4ce7-a662-4bb36ea78beb>
Date: Tue, 6 Jan 2015 21:00:18 +0000
Subject: [PATCH] Fixes #1530 in trunk

git-svn-id: https://svn.modelica.org/projects/Modelica/trunk@8035 7ce873d0-865f-4ce7-a662-4bb36ea78beb
---
 Modelica/Media/package.mo | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/Modelica/Media/package.mo b/Modelica/Media/package.mo
index 8e4d961baf..f7fa9f3392 100644
--- a/Modelica/Media/package.mo
+++ b/Modelica/Media/package.mo
@@ -6687,7 +6687,7 @@ quantities are assumed to be constant.
       "Return specific internal energy"
       extends Modelica.Icons.Function;
     algorithm
-      u := (cp_const - R_gas)*(state.T - T0);
+      u := cp_const*(T - T0) - R*T;
     end specificInternalEnergy;
 
     redeclare function extends specificEntropy "Return specific entropy"
@@ -6708,7 +6708,7 @@ quantities are assumed to be constant.
       "Return specific Helmholtz energy"
       extends Modelica.Icons.Function;
     algorithm
-      f := (cp_const - R_gas)*(state.T - T0) - state.T*specificEntropy(state);
+      f := specificInternalEnergy(state) - state.T*specificEntropy(state);
     end specificHelmholtzEnergy;
 
     redeclare function extends dynamicViscosity "Return dynamic viscosity"
@@ -8063,7 +8063,8 @@ public
 
   record IF97BaseTwoPhase "Intermediate property data record for IF 97"
     extends Modelica.Icons.Record;
-    Integer phase(start=0) "Phase: 2 for two-phase, 1 for one phase, 0 if unknown";
+    Integer phase(start=0)
+      "Phase: 2 for two-phase, 1 for one phase, 0 if unknown";
     Integer region(min=1, max=5) "IF 97 region";
     SI.Pressure p "Pressure";
     SI.Temperature T "Temperature";