Fixup

fec223f7 · Philipp Arras · c6791711 · fec223f7
Commit fec223f7 authored 5 years ago by Philipp Arras
--- a/nifty6/operators/energy_operators.py
+++ b/nifty6/operators/energy_operators.py
@@ -129,7 +129,7 @@ class VariableCovarianceGaussianEnergy(EnergyOperator):
    def apply(self, x):
        self._check_input(x)
        lin = isinstance(x, Linearization)
-        res0 = x[self._r].vdot(x[self._r]*x[self._icov])
+        res0 = x[self._r].vdot(x[self._r]*x[self._icov]).real
        res1 = x[self._icov].log().sum()
        res = 0.5*(res0-res1)
        if not lin: