grf_to_xyl_test, a Fortran90 code which calls grf_to_xyl(), which converts information about an abstract graph from GRF to XYL format.
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grf_to_xyl, a Fortran90 code which converts information about an abstract graph from GRF to XYL format.
heawood is the Heawood graph:
knightstour is the Knight's tour graph:
PETERSEN is the Petersen graph:
TUTTE is the Tutte graph: