From 2bc0a415f11682a16761d218fb059909a12fefe3 Mon Sep 17 00:00:00 2001
From: Philipp Arras <parras@mpa-garching.mpg.de>
Date: Thu, 28 Jun 2018 21:38:09 +0200
Subject: [PATCH] Readability

---
 nifty5/energies/hamiltonian.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/nifty5/energies/hamiltonian.py b/nifty5/energies/hamiltonian.py
index cdf2dc44c..741c4b132 100644
--- a/nifty5/energies/hamiltonian.py
+++ b/nifty5/energies/hamiltonian.py
@@ -54,11 +54,11 @@ class Hamiltonian(Energy):
     @memo
     def curvature(self):
         prior_curv = self._prior.curvature
-        if self._ic_samp is not None:
+        if self._ic_samp is None:
+            c = self._lh.curvature + prior_curv
+        else:
             c = SamplingEnabler(self._lh.curvature, prior_curv.inverse,
                                 self._ic_samp, prior_curv.inverse)
-        else:
-            c = self._lh.curvature + prior_curv
         return InversionEnabler(c, self._ic, self._precond)
 
     def __str__(self):
-- 
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