Preliminary reimplementation of voz1b1 in C++ with more modularity

c_tools/zobov2/voz1b1/voz_io.cpp

@@ -0,0 +1,64 @@
+#include <iostream>
+#include <fstream>
+#include "voz_io.hpp"
+#include "CosmoTool/fortran.hpp"
+#include <cmath>
+
+using namespace CosmoTool;
+using namespace std;
+
+bool PositionData::readFrom(const string& fname)
+{
+  try
+    {
+      UnformattedRead f(fname.c_str());
+      
+      f.beginCheckpoint();
+      np = f.readInt32();
+      f.endCheckPoint();
+
+      for (int j = 0; j < 3; j++)
+        {
+          xyz[j] = new float[np];
+        
+          f.beginCheckpoint();
+          for (int p = 0; p < np; p++)
+            xyz[j][p] = f.readReal32();
+          f.endCheckpoint();
+        }
+    }
+  catch (const NoSuchFileException& e)
+    {
+      return false;
+    }
+  catch (const InvalidUnformattedAccess& e)
+    {
+      return false;
+    }
+  catch (const EndOfFileException& e)
+    {
+      return false;
+    }
+  
+  return true;
+}
+
+void PositionData::findExtrema()
+{
+  const float BF = std::numeric_limits<float>::max();
+
+  for (int i = 0; i < 3; i++)
+    {
+      xyz_min[i] = BF; 
+      xyz_max[i] = -BF;
+    }
+
+  for (int i = 0; i < 3; i++)
+    {
+      for (pid_t p = 0; p < np; p++) 
+        {
+          xyz_min[p] = min(xyz_min[p], xyz[p][i]);
+          xyz_max[p] = max(xyz_max[p], xyz[p][i]);
+        }
+    }
+}