for dwf_precondition

lib/algorithms/Algorithms.h

@@ -49,6 +49,7 @@ Author: Peter Boyle <paboyle@ph.ed.ac.uk>
 #include <Grid/algorithms/iterative/BlockConjugateGradient.h>
 #include <Grid/algorithms/iterative/ConjugateGradientReliableUpdate.h>
 #include <Grid/algorithms/iterative/ImplicitlyRestartedLanczos.h>
+#include <Grid/algorithms/iterative/InexactPrecConjugateGradient.h>
 #include <Grid/algorithms/CoarsenedMatrix.h>
 #include <Grid/algorithms/FFT.h>
 

lib/algorithms/approx/MultiShiftFunction.cc

@@ -53,4 +53,10 @@ void MultiShiftFunction::csv(std::ostream &out)
   }
   return;
 }
+
+RealD __InverseApproximation(RealD x)
+{
+  return 1.0/x;
+}
+
 }

lib/algorithms/approx/MultiShiftFunction.h

@@ -63,5 +63,7 @@ public:
   }
 
 };
+RealD __InverseApproximation(RealD x);
+
 }
 #endif