From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Thu, 26 Oct 2017 15:26:18 +0000 (-0600)
Subject: Let DataOut vector wrappers report whether the data type is complex.
X-Git-Tag: v9.0.0-rc1~868^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=98e025d1bb0db2cd8c9a63c806c5ebc0f647cfad;p=dealii.git

Let DataOut vector wrappers report whether the data type is complex.
---

diff --git a/include/deal.II/numerics/data_out_dof_data.h b/include/deal.II/numerics/data_out_dof_data.h
index 646293443c..4de8a3a6a8 100644
--- a/include/deal.II/numerics/data_out_dof_data.h
+++ b/include/deal.II/numerics/data_out_dof_data.h
@@ -255,6 +255,12 @@ namespace internal
       (const FEValuesBase<DoFHandlerType::dimension,DoFHandlerType::space_dimension> &fe_patch_values,
        std::vector<std::vector< Tensor<2,DoFHandlerType::space_dimension> > > &patch_hessians_system) const = 0;
 
+      /**
+       * Return whether the data represented by (a derived class of) this object
+       * represents a complex-valued (as opposed to real-valued) information.
+       */
+      virtual bool is_complex_valued () const = 0;
+
       /**
        * Clear all references to the vectors.
        */
diff --git a/include/deal.II/numerics/data_out_dof_data.templates.h b/include/deal.II/numerics/data_out_dof_data.templates.h
index 83d0c7f391..bf36a986ef 100644
--- a/include/deal.II/numerics/data_out_dof_data.templates.h
+++ b/include/deal.II/numerics/data_out_dof_data.templates.h
@@ -22,6 +22,7 @@
 #include <deal.II/base/std_cxx14/memory.h>
 #include <deal.II/base/utilities.h>
 #include <deal.II/base/work_stream.h>
+#include <deal.II/base/numbers.h>
 
 #include <deal.II/dofs/dof_accessor.h>
 #include <deal.II/dofs/dof_handler.h>
@@ -471,6 +472,12 @@ namespace internal
       (const FEValuesBase<DoFHandlerType::dimension,DoFHandlerType::space_dimension> &fe_patch_values,
        std::vector<std::vector< Tensor<2,DoFHandlerType::space_dimension> > > &patch_hessians_system) const;
 
+      /**
+       * Return whether the data represented by (a derived class of) this object
+       * represents a complex-valued (as opposed to real-valued) information.
+       */
+      virtual bool is_complex_valued () const;
+
       /**
        * Clear all references to the vectors.
        */
@@ -808,6 +815,15 @@ namespace internal
 
 
 
+    template <typename DoFHandlerType, typename VectorType>
+    bool
+    DataEntry<DoFHandlerType,VectorType>::is_complex_valued() const
+    {
+      return numbers::NumberTraits<typename VectorType::value_type>::is_complex;
+    }
+
+
+
     template <typename DoFHandlerType, typename VectorType>
     std::size_t
     DataEntry<DoFHandlerType,VectorType>::memory_consumption () const