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function read_eirene_grid
Read information about a triangular grid from EIRENE-format files and generate a list of grid edges;
subroutine write_eirene_grid
Write information about a triangular grid into EIRENE-format files;
subroutine provide_grid_object_lists
Provide lists of objects (nodes, edges and cells); nodes are characterized by their coordinates; edges and cells, by indices of nodes they consist of;
subroutine arrange_neighbors
Build information about neighboring cells necessary the EIRENE file format;
integer, allocatable, dimensionsubroutine build_edges Fill the edge(:) child of the grid structure using the triangle child content;
function give_edges_with_mat_property
Return the list of indices of edges with a given MP;
function all_material_properties
Provide list of all MP values available in the grid;
subroutine deallocate_grid
Deallocate the structure child arrays.

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subroutine read_vertices
Read the coordinates of grid vertices from an EIRENE-format file;
subroutine read_triangles
Reads indices of the vertices that form each grid triangle from an EIRENE-format file;
subroutine read_neighbors
subroutine write_vertices
subroutine write_triangles
subroutine write_neighbors
subroutine find_neighboring_triangles
integer function find_side
subroutine write_edges
subroutine check_edges
subroutine check_vertices
subroutine grid_statistics
integer function neighboring_triangle_index
integer function edge_index

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Given a grid stucture, the subroutine provides three arrays:

coordinates , real 2D array containing the coordinates for all grid nodes;
edge_connect , integer 2D array containing indices of vertices for all edges;
cell_connect , integer 2D array containing indices of vertices for all cells (triangles).

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Argument	Type	Intent	Description
grid	type(triangular_grid)	in	Grid structure

For the description of the service routines (some of them are no longer used), see comments in the module file.

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Structure of EIRENE input files

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