Add a header to numbers.h to satisfy the testsuite

diff --git a/include/deal.II/base/numbers.h b/include/deal.II/base/numbers.h
index d8c4a01cc7479ab3a040f0bedfcf6ec4d8a71cc8..a49941dd69753723299800a9aa6db3d9677b1be2 100644 (file)
--- a/include/deal.II/base/numbers.h
+++ b/include/deal.II/base/numbers.h
@@ -41,7 +41,10 @@ DEAL_II_NAMESPACE_CLOSE
 
 // Declare / Import auto-differentiable math functions in(to) standard
 // namespace before numbers::NumberTraits is defined
+#ifdef DEAL_II_WITH_ADOLC
+#include <adolc/adouble.h> // Taped double
 #include <deal.II/differentiation/ad/adolc_math.h>
+#endif
 // Ideally we'd like to #include <deal.II/differentiation/ad/sacado_math.h>
 // but header indirectly references numbers.h. We therefore simply
 // import the whole Sacado header at this point to get the math