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145 lines
3.6 KiB
FortranFixed
145 lines
3.6 KiB
FortranFixed
*> \brief \b DERRAB
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*
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* =========== DOCUMENTATION ===========
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*
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* Online html documentation available at
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* http://www.netlib.org/lapack/explore-html/
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*
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* Definition:
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* ===========
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*
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* SUBROUTINE DERRAB( NUNIT )
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*
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* .. Scalar Arguments ..
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* INTEGER NUNIT
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* ..
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*
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*
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*> \par Purpose:
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* =============
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*>
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*> \verbatim
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*>
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*> DERRAB tests the error exits for DSGESV.
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*> \endverbatim
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*
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* Arguments:
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* ==========
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*
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*> \param[in] NUNIT
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*> \verbatim
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*> NUNIT is INTEGER
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*> The unit number for output.
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*> \endverbatim
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*
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* Authors:
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* ========
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*
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*> \author Univ. of Tennessee
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*> \author Univ. of California Berkeley
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*> \author Univ. of Colorado Denver
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*> \author NAG Ltd.
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*
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*> \ingroup double_lin
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*
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* =====================================================================
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SUBROUTINE DERRAB( NUNIT )
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*
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* -- LAPACK test routine --
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* -- LAPACK is a software package provided by Univ. of Tennessee, --
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* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
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*
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* .. Scalar Arguments ..
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INTEGER NUNIT
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* ..
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*
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* =====================================================================
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*
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* .. Parameters ..
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INTEGER NMAX
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PARAMETER ( NMAX = 4 )
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* ..
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* .. Local Scalars ..
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INTEGER I, INFO, ITER, J
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* ..
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* .. Local Arrays ..
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INTEGER IP( NMAX )
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DOUBLE PRECISION A( NMAX, NMAX ), AF( NMAX, NMAX ), B( NMAX ),
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$ C( NMAX ), R( NMAX ), R1( NMAX ), R2( NMAX ),
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$ W( 2*NMAX ), X( NMAX )
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DOUBLE PRECISION WORK(1)
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REAL SWORK(1)
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* ..
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* .. External Subroutines ..
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EXTERNAL CHKXER, DSGESV
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* ..
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* .. Scalars in Common ..
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LOGICAL LERR, OK
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CHARACTER*32 SRNAMT
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INTEGER INFOT, NOUT
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* ..
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* .. Common blocks ..
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COMMON / INFOC / INFOT, NOUT, OK, LERR
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COMMON / SRNAMC / SRNAMT
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* ..
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* .. Intrinsic Functions ..
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INTRINSIC DBLE
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* ..
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* .. Executable Statements ..
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*
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NOUT = NUNIT
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WRITE( NOUT, FMT = * )
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*
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* Set the variables to innocuous values.
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*
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DO 20 J = 1, NMAX
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DO 10 I = 1, NMAX
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A( I, J ) = 1.D0 / DBLE( I+J )
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AF( I, J ) = 1.D0 / DBLE( I+J )
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10 CONTINUE
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B( J ) = 0.D0
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R1( J ) = 0.D0
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R2( J ) = 0.D0
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W( J ) = 0.D0
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X( J ) = 0.D0
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C( J ) = 0.D0
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R( J ) = 0.D0
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IP( J ) = J
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20 CONTINUE
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OK = .TRUE.
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*
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SRNAMT = 'DSGESV'
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INFOT = 1
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CALL DSGESV(-1,0,A,1,IP,B,1,X,1,WORK,SWORK,ITER,INFO)
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CALL CHKXER( 'DSGESV', INFOT, NOUT, LERR, OK )
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INFOT = 2
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CALL DSGESV(0,-1,A,1,IP,B,1,X,1,WORK,SWORK,ITER,INFO)
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CALL CHKXER( 'DSGESV', INFOT, NOUT, LERR, OK )
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INFOT = 4
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CALL DSGESV(2,1,A,1,IP,B,2,X,2,WORK,SWORK,ITER,INFO)
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CALL CHKXER( 'DSGESV', INFOT, NOUT, LERR, OK )
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INFOT = 7
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CALL DSGESV(2,1,A,2,IP,B,1,X,2,WORK,SWORK,ITER,INFO)
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CALL CHKXER( 'DSGESV', INFOT, NOUT, LERR, OK )
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INFOT = 9
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CALL DSGESV(2,1,A,2,IP,B,2,X,1,WORK,SWORK,ITER,INFO)
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CALL CHKXER( 'DSGESV', INFOT, NOUT, LERR, OK )
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*
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* Print a summary line.
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*
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IF( OK ) THEN
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WRITE( NOUT, FMT = 9999 )'DSGESV'
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ELSE
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WRITE( NOUT, FMT = 9998 )'DSGESV'
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END IF
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*
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9999 FORMAT( 1X, A6, ' drivers passed the tests of the error exits' )
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9998 FORMAT( ' *** ', A6, ' drivers failed the tests of the error ',
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$ 'exits ***' )
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*
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RETURN
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*
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* End of DERRAB
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*
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END
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