[Gmsh] how can I check node number order

[Roland Tollenaar]

Hi,

I have established that theoretically the node numbering of gmsh is 
identical to calculix for 1st and 2nd order tetrahedral elements.

If I convert the unv file from gmsh and retain the order of the nodes 
defining the elements, then cgx reports 95%) bad elements (negative 
jacobian).

Since it is unlikely that the elements from the meshinc process are so 
bad, it seems as though there is a good chance that the element order as 
gmsh builds the unv file is not consistent with its own (according to 
the documentation) node sequence format.

Is this known, or if I have to check this, where in the code would the 
reordering be done?

Kind regards,

Roland