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*> \brief \b DERRAB
*
* =========== DOCUMENTATION ===========
*
* Online html documentation available at
* http://www.netlib.org/lapack/explore-html/
*
* Definition:
* ===========
*
* SUBROUTINE DERRAB( NUNIT )
*
* .. Scalar Arguments ..
* INTEGER NUNIT
* ..
*
*
*> \par Purpose:
* =============
*>
*> \verbatim
*>
*> DERRAB tests the error exits for DSGESV.
*> \endverbatim
*
* Arguments:
* ==========
*
*> \param[in] NUNIT
*> \verbatim
*> NUNIT is INTEGER
*> The unit number for output.
*> \endverbatim
*
* Authors:
* ========
*
*> \author Univ. of Tennessee
*> \author Univ. of California Berkeley
*> \author Univ. of Colorado Denver
*> \author NAG Ltd.
*
*> \date November 2011
*
*> \ingroup double_lin
*
* =====================================================================
SUBROUTINE DERRAB( NUNIT )
*
* -- LAPACK test routine (version 3.4.0) --
* -- LAPACK is a software package provided by Univ. of Tennessee, --
* -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
* November 2011
*
* .. Scalar Arguments ..
INTEGER NUNIT
* ..
*
* =====================================================================
*
* .. Parameters ..
INTEGER NMAX
PARAMETER ( NMAX = 4 )
* ..
* .. Local Scalars ..
INTEGER I, INFO, ITER, J
* ..
* .. Local Arrays ..
INTEGER IP( NMAX )
DOUBLE PRECISION A( NMAX, NMAX ), AF( NMAX, NMAX ), B( NMAX ),
$ C( NMAX ), R( NMAX ), R1( NMAX ), R2( NMAX ),
$ W( 2*NMAX ), X( NMAX )
DOUBLE PRECISION WORK(1)
REAL SWORK(1)
* ..
* .. External Subroutines ..
EXTERNAL CHKXER, DSGESV
* ..
* .. Scalars in Common ..
LOGICAL LERR, OK
CHARACTER*32 SRNAMT
INTEGER INFOT, NOUT
* ..
* .. Common blocks ..
COMMON / INFOC / INFOT, NOUT, OK, LERR
COMMON / SRNAMC / SRNAMT
* ..
* .. Intrinsic Functions ..
INTRINSIC DBLE
* ..
* .. Executable Statements ..
*
NOUT = NUNIT
WRITE( NOUT, FMT = * )
*
* Set the variables to innocuous values.
*
DO 20 J = 1, NMAX
DO 10 I = 1, NMAX
A( I, J ) = 1.D0 / DBLE( I+J )
AF( I, J ) = 1.D0 / DBLE( I+J )
10 CONTINUE
B( J ) = 0.D0
R1( J ) = 0.D0
R2( J ) = 0.D0
W( J ) = 0.D0
X( J ) = 0.D0
C( J ) = 0.D0
R( J ) = 0.D0
IP( J ) = J
20 CONTINUE
OK = .TRUE.
*
SRNAMT = 'DSGESV'
INFOT = 1
CALL DSGESV(-1,0,A,1,IP,B,1,X,1,WORK,SWORK,ITER,INFO)
CALL CHKXER( 'DSGESV', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DSGESV(0,-1,A,1,IP,B,1,X,1,WORK,SWORK,ITER,INFO)
CALL CHKXER( 'DSGESV', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL DSGESV(2,1,A,1,IP,B,2,X,2,WORK,SWORK,ITER,INFO)
CALL CHKXER( 'DSGESV', INFOT, NOUT, LERR, OK )
INFOT = 7
CALL DSGESV(2,1,A,2,IP,B,1,X,2,WORK,SWORK,ITER,INFO)
CALL CHKXER( 'DSGESV', INFOT, NOUT, LERR, OK )
INFOT = 9
CALL DSGESV(2,1,A,2,IP,B,2,X,1,WORK,SWORK,ITER,INFO)
CALL CHKXER( 'DSGESV', INFOT, NOUT, LERR, OK )
*
* Print a summary line.
*
IF( OK ) THEN
WRITE( NOUT, FMT = 9999 )'DSGESV'
ELSE
WRITE( NOUT, FMT = 9998 )'DSGESV'
END IF
*
9999 FORMAT( 1X, A6, ' drivers passed the tests of the error exits' )
9998 FORMAT( ' *** ', A6, ' drivers failed the tests of the error ',
$ 'exits ***' )
*
RETURN
*
* End of DERRAB
*
END
|
