[cig-commits] [commit] inversion, master, validate_MT_params: Minor bug fix (1ddc4c0)

[cig_noreply at geodynamics.org]

Repository : https://github.com/geodynamics/burnman

On branches: inversion,master,validate_MT_params
Link       : https://github.com/geodynamics/burnman/compare/80c2a295c42dfdb38f83f6c1334bf7d8f97a8463...409647ff05dfad6a686198cac1481bd46b5e2e62

>---------------------------------------------------------------

commit 1ddc4c02a235063279d841043d731dcafc417347
Author: Bob Myhill <myhill.bob at gmail.com>
Date:   Wed Sep 3 02:37:07 2014 +0200

    Minor bug fix


>---------------------------------------------------------------

1ddc4c02a235063279d841043d731dcafc417347
 burnman/solutionmodel.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/burnman/solutionmodel.py b/burnman/solutionmodel.py
index ad4557f..a39bce1 100644
--- a/burnman/solutionmodel.py
+++ b/burnman/solutionmodel.py
@@ -101,7 +101,7 @@ class IdealSolution ( SolutionModel ):
                                      molar_fractions[i] * R * np.log(activities[i])
 
     def  ideal_gibbs_excess( self, temperature, molar_fractions ): 
-        return temperature*configurational_entropy(molar_fractions)
+        return 0.0 - temperature*configurational_entropy(molar_fractions)
 
     def ideal_activities ( self, molar_fractions ):