Contents

• NAME
• SYNOPSIS
• PURPOSE
• PARAMETERS

NAME

     zgssco - General sparse solver condition number estimate.

SYNOPSIS

      SUBROUTINE ZGSSCO ( COND, HANDLE, IER )

      INTEGER           IER
      DOUBLE PRECISION  COND
      DOUBLE PRECISION  HANDLE(150)

PURPOSE

     ZGSSCO - Condition number estimate.

PARAMETERS

     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).