Change some function names and add comment

src/gpu/VirtualFluids_GPU/DataStructureInitializer/GridReaderGenerator/IndexRearrangementForStreams.cpp

@@ -466,7 +466,7 @@ void IndexRearrangementForStreams::reorderRecvIndicesForCommAfterFtoC(
 
 void IndexRearrangementForStreams::splitFineToCoarseIntoBorderAndBulk(const uint &level)
 {
-    this->getGridInterfaceIndicesBorderBulkFC(level);
+    this->reorderFineToCoarseIntoBorderAndBulk(level);
 
     para->getParD(level)->intFCBorder.kFC      = para->getParH(level)->intFCBorder.kFC;
     para->getParD(level)->intFCBulk.kFC        = para->getParH(level)->intFCBulk.kFC;
@@ -481,7 +481,7 @@ void IndexRearrangementForStreams::splitFineToCoarseIntoBorderAndBulk(const uint
     para->getParD(level)->offFCBulk.zOffFC = para->getParD(level)->offFC.zOffFC + para->getParD(level)->intFCBorder.kFC;
 }
 
-void IndexRearrangementForStreams::getGridInterfaceIndicesBorderBulkFC(int level)
+void IndexRearrangementForStreams::reorderFineToCoarseIntoBorderAndBulk(int level)
 {
     // create some local variables for better readability
     uint *iCellFccAll = para->getParH(level)->intFC.ICellFCC;
@@ -547,7 +547,7 @@ void IndexRearrangementForStreams::getGridInterfaceIndicesBorderBulkFC(int level
 
 void IndexRearrangementForStreams::splitCoarseToFineIntoBorderAndBulk(const uint &level)
 {
-    this->getGridInterfaceIndicesBorderBulkCF(level);
+    this->reorderCoarseToFineIntoBorderAndBulk(level);
 
     para->getParD(level)->intCFBorder.kCF      = para->getParH(level)->intCFBorder.kCF;
     para->getParD(level)->intCFBulk.kCF        = para->getParH(level)->intCFBulk.kCF;
@@ -562,7 +562,7 @@ void IndexRearrangementForStreams::splitCoarseToFineIntoBorderAndBulk(const uint
     para->getParD(level)->offCFBulk.zOffCF = para->getParD(level)->offCF.zOffCF + para->getParD(level)->intCFBorder.kCF;
 }
 
-void IndexRearrangementForStreams::getGridInterfaceIndicesBorderBulkCF(int level)
+void IndexRearrangementForStreams::reorderCoarseToFineIntoBorderAndBulk(int level)
 {
     // create some local variables for better readability
     uint *iCellCfcAll  = para->getParH(level)->intCF.ICellCFC;

src/gpu/VirtualFluids_GPU/DataStructureInitializer/GridReaderGenerator/IndexRearrangementForStreams.h

@@ -142,12 +142,13 @@ private:
     //! subarrays: \details The coarse cells for interpolation from coarse to fine (iCellCFC) are divided into two
     //! subgroups: border and bulk. The fine cells (iCellCFF) are reordered accordingly. The offset cells (xOffCF,
     //! yOffCF, zOffCF) must be reordered in the same way.
-    void getGridInterfaceIndicesBorderBulkCF(int level);
+    void reorderCoarseToFineIntoBorderAndBulk(int level);
 
     //! \brief This function reorders the arrays of FCC/FCF indices and return pointers and sizes of the new subarrays:
     //! \details The coarse cells for interpolation from fine to coarse (iCellFCC) are divided into two subgroups:
-    //! border and bulk. The fine cells (iCellFCF) are reordered accordingly.
-    void getGridInterfaceIndicesBorderBulkFC(int level);
+    //! border and bulk. The fine cells (iCellFCF) are reordered accordingly. The offset cells (xOffFC,
+    //! yOffFC, zOffFC) must be reordered in the same way.
+    void reorderFineToCoarseIntoBorderAndBulk(int level);
 
 
 private: