21 January 2020 11:07:21 AM

TRIANGULATION_TRIANGLE_NEIGHBORS.
  C version:
  Read a node dataset of NODE_NUM points in 2 dimensions.
  Read an associated triangulation dataset of 
  TRIANGLE_NUM triangles using 3 or 6 nodes.

  For each triangle, determine the indices of the
  triangles opposite vertices 1, 2 and 3.

  Write this triangle neighbor data to files.

  Compiled on Jan 21 2020 at 09:58:48

  Read the header of "box3_nodes.txt".

  Spatial dimension DIM_NUM = 2
  Number of nodes NODE_NUM  = 20

  Read the data in "box3_nodes.txt".

  Portion of coordinate data from file:

  Row:        0             1     
  Col

    0:        0.000000        0.000000
    1:        1.000000        0.000000
    2:        2.000000        0.000000
    3:        3.000000        0.000000
    4:        4.000000        0.000000

 Read the header of "box3_elements.txt".

  Triangle order TRIANGLE_ORDER = 3
  Number of triangles TRIANGLE_NUM  = 24

  Read the data in "box3_elements.txt".

  Portion of data read from file:

  Row:      1       2       3  
  Col

    1:      6       1       2  
    2:      7       6       2  
    3:      7      11       6  
    4:     12      11       7  
    5:     16      11      12  

MESH_BASE_ZERO:
  The element indexing appears to be 1-based!
  This will be converted to 0-based.

  Created the triangle neighbor file "box3_neighbors.txt"

TRIANGULATION_TRIANGLE_NEIGHBORS.:
  Normal end of execution.

21 January 2020 11:07:21 AM