[bugfix] sqrt function needs to be takjen from numpy

python/dune/perftool/ufl/visitor.py

@@ -293,7 +293,7 @@ class UFL2LoopyVisitor(ModifiedTerminalTracker):
         return self._evaluate_function(np.exp, "exp", self.call(o.ufl_operands[0]))
 
     def sqrt(self, o):
-        return self._evaluate_function(sqrt, "sqrt", self.call(o.ufl_operands[0]))
+        return self._evaluate_function(np.sqrt, "sqrt", self.call(o.ufl_operands[0]))
 
     def power(self, o):
         from ufl.constantvalue import IntValue