(3M) Calculator User Manual

vertnbr + 1, and treetab is the array holding the structure of the separators
tree, of size vertnbr. See the above manual page of SCOTCH graphOrder, as
well as section 7.2.5, for an explanation of the semantics of all of these fields.
The SCOTCH graphOrderInit routine should be the first function to be called
upon a SCOTCH Ordering structure for ordering g raphs. When the ordering
structure is no longer of use, the SCOTCH graphOrderExit function must b e
called, in order to to free its internal structures.
Return val ues
SCOTCH
graphOrderInit returns 0 if the ordering structure has been success-
fully initialized, and 1 else.
7.7.3 SCOTCH
graphOrderExit
Synopsis
void SCOTCH
graphOrderExit (const SCOTCH Graph * grafptr,
SCOTCH Ordering * ordeptr)
scotchfgraphorderexit (doubleprecision (*) grafdat,
doubleprecision (*) ordedat)
Description
The SCOTCH
graphOrderExit function free s the contents of a SCOTCH
Ordering structure previously initialized by SCOTCH graphOrderInit. All
subsequent calls to SCOTCH graphOrder* routines other than SCOTCH graph
OrderInit, using this structure as parameter, may yield unpredictable results.
7.7.4 SCOTCH
graphOrderLoad
Synopsis
int SCOTCH
graphOrderLoad (const SCOTCH Graph * grafptr,
SCOTCH
Ordering * ordeptr,
FILE * stream)
scotchfgraphorderload (doubleprecision (*) grafdat,
doubleprecision (*) ordedat,
integer fildes,
integer ierr)
Description
The SCOTCH
graphOrderLoad routine fills the SCOTCH Ordering structure
pointed to by ordeptr with the ordering data available in the Scotch order-
ing format (see section 5.6) from stream stream.
Fortra n users must use the PXFFILENO or FNUM functions to obtain the num-
ber of the Unix file descriptor fildes associated with the logical unit of the
ordering file.
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