Contents
zgssco - General sparse solver condition number estimate.
SUBROUTINE ZGSSCO ( COND, HANDLE, IER )
INTEGER IER
DOUBLE PRECISION COND
DOUBLE PRECISION HANDLE(150)
ZGSSCO - Condition number estimate.
COND - DOUBLE PRECISION
On exit, an estimate of the condition number of the
factored matrix. Must be called after the numerical
factorization subroutine, ZGSSFA().
HANDLE(150) - DOUBLE PRECISION array
On entry, HANDLE(*) is an array containing
information needed by the solver, and must be passed
unchanged to each sparse solver subroutine.
Modified on exit.
IER - INTEGER
Error number. If no error encountered, unchanged on
exit. If error encountered, it is set to a non-zero
integer. Error numbers set by this subroutine:
-700 : Invalid calling sequence - need to call ZGSSFA first.
-710 : Condition number estimate not available (not implemented
for this HANDLE's matix type).