Put calculation_arguments definition into dedicated header

Author: felsenhower

calculation_arguments.cpp

@@ -1,3 +1,5 @@
+#include "calculation_arguments.hpp"
+
 #include "partdiff.h"
 
 namespace partdiff {

calculation_arguments.hpp

@@ -0,0 +1,20 @@
+#pragma once
+
+#include "partdiff.h"
+
+namespace partdiff {
+
+  struct calculation_arguments {
+
+    uint64_t N;
+    uint64_t num_matrices;
+    double h;
+    tensor matrices;
+    calculation_arguments(const askparams::calculation_options &);
+
+    private:
+    askparams::calculation_options::perturbation_function pert_func;
+    void init_matrices();
+  };
+
+} // namespace partdiff

partdiff.cpp

@@ -1,3 +1,4 @@
+#include "calculation_arguments.hpp"
 #include "calculation_results.hpp"
 #include "tensor.hpp"
 #include <cmath>

partdiff.h

@@ -85,17 +85,4 @@ namespace partdiff {
 
   } // namespace askparams
 
-  struct calculation_arguments {
-
-    uint64_t N;
-    uint64_t num_matrices;
-    double h;
-    tensor matrices;
-    calculation_arguments(const askparams::calculation_options &);
-
-    private:
-    askparams::calculation_options::perturbation_function pert_func;
-    void init_matrices();
-  };
-
 } // namespace partdiff