278 lines
		
	
	
		
			8.9 KiB
		
	
	
	
		
			Fortran
		
	
	
	
			
		
		
	
	
			278 lines
		
	
	
		
			8.9 KiB
		
	
	
	
		
			Fortran
		
	
	
	
*> \brief \b DERRLS
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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 DERRLS( PATH, NUNIT )
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*
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*       .. Scalar Arguments ..
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*       CHARACTER*3        PATH
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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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*> DERRLS tests the error exits for the DOUBLE PRECISION least squares
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*> driver routines (DGELS, DGELST, DGETSLS, SGELSS, SGELSY, SGELSD).
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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] PATH
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*> \verbatim
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*>          PATH is CHARACTER*3
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*>          The LAPACK path name for the routines to be tested.
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*> \endverbatim
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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 DERRLS( PATH, 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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      CHARACTER*3        PATH
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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 = 2 )
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*     ..
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*     .. Local Scalars ..
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      CHARACTER*2        C2
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      INTEGER            INFO, IRNK
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      DOUBLE PRECISION   RCOND
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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 ), B( NMAX, NMAX ), S( NMAX ),
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     $                   W( NMAX )
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*     ..
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*     .. External Functions ..
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      LOGICAL            LSAMEN
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      EXTERNAL           LSAMEN
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*     ..
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*     .. External Subroutines ..
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      EXTERNAL           ALAESM, CHKXER, DGELS, DGELSD, DGELSS, DGELST,
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     $                   DGELSY, DGETSLS
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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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*     .. Executable Statements ..
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*
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      NOUT = NUNIT
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      WRITE( NOUT, FMT = * )
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      C2 = PATH( 2: 3 )
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      A( 1, 1 ) = 1.0D+0
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      A( 1, 2 ) = 2.0D+0
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      A( 2, 2 ) = 3.0D+0
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      A( 2, 1 ) = 4.0D+0
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      OK = .TRUE.
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*
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      IF( LSAMEN( 2, C2, 'LS' ) ) THEN
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*
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*        Test error exits for the least squares driver routines.
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*
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*        DGELS
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*
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         SRNAMT = 'DGELS '
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         INFOT = 1
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         CALL DGELS( '/', 0, 0, 0, A, 1, B, 1, W, 1, INFO )
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         CALL CHKXER( 'DGELS ', INFOT, NOUT, LERR, OK )
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         INFOT = 2
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         CALL DGELS( 'N', -1, 0, 0, A, 1, B, 1, W, 1, INFO )
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         CALL CHKXER( 'DGELS ', INFOT, NOUT, LERR, OK )
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         INFOT = 3
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         CALL DGELS( 'N', 0, -1, 0, A, 1, B, 1, W, 1, INFO )
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         CALL CHKXER( 'DGELS ', INFOT, NOUT, LERR, OK )
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         INFOT = 4
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         CALL DGELS( 'N', 0, 0, -1, A, 1, B, 1, W, 1, INFO )
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         CALL CHKXER( 'DGELS ', INFOT, NOUT, LERR, OK )
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         INFOT = 6
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         CALL DGELS( 'N', 2, 0, 0, A, 1, B, 2, W, 2, INFO )
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         CALL CHKXER( 'DGELS ', INFOT, NOUT, LERR, OK )
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         INFOT = 8
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         CALL DGELS( 'N', 2, 0, 0, A, 2, B, 1, W, 2, INFO )
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         CALL CHKXER( 'DGELS ', INFOT, NOUT, LERR, OK )
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         INFOT = 8
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         CALL DGELS( 'N', 0, 2, 0, A, 1, B, 1, W, 2, INFO )
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         CALL CHKXER( 'DGELS', INFOT, NOUT, LERR, OK )
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         INFOT = 10
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         CALL DGELS( 'N', 1, 1, 0, A, 1, B, 1, W, 1, INFO )
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         CALL CHKXER( 'DGELS ', INFOT, NOUT, LERR, OK )
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*
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*        DGELST
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*
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         SRNAMT = 'DGELST'
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         INFOT = 1
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         CALL DGELST( '/', 0, 0, 0, A, 1, B, 1, W, 1, INFO )
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         CALL CHKXER( 'DGELST', INFOT, NOUT, LERR, OK )
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         INFOT = 2
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         CALL DGELST( 'N', -1, 0, 0, A, 1, B, 1, W, 1, INFO )
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         CALL CHKXER( 'DGELST', INFOT, NOUT, LERR, OK )
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         INFOT = 3
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         CALL DGELST( 'N', 0, -1, 0, A, 1, B, 1, W, 1, INFO )
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         CALL CHKXER( 'DGELST', INFOT, NOUT, LERR, OK )
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         INFOT = 4
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         CALL DGELST( 'N', 0, 0, -1, A, 1, B, 1, W, 1, INFO )
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         CALL CHKXER( 'DGELST', INFOT, NOUT, LERR, OK )
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         INFOT = 6
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         CALL DGELST( 'N', 2, 0, 0, A, 1, B, 2, W, 2, INFO )
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         CALL CHKXER( 'DGELST', INFOT, NOUT, LERR, OK )
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         INFOT = 8
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         CALL DGELST( 'N', 2, 0, 0, A, 2, B, 1, W, 2, INFO )
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         CALL CHKXER( 'DGELST', INFOT, NOUT, LERR, OK )
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         INFOT = 8
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         CALL DGELST( 'N', 0, 2, 0, A, 1, B, 1, W, 2, INFO )
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         CALL CHKXER( 'DGELST', INFOT, NOUT, LERR, OK )
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         INFOT = 10
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         CALL DGELST( 'N', 1, 1, 0, A, 1, B, 1, W, 1, INFO )
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         CALL CHKXER( 'DGELST', INFOT, NOUT, LERR, OK )
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*
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*        DGETSLS
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*
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         SRNAMT = 'DGETSLS'
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         INFOT = 1
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         CALL DGETSLS( '/', 0, 0, 0, A, 1, B, 1, W, 1, INFO )
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         CALL CHKXER( 'DGETSLS', INFOT, NOUT, LERR, OK )
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         INFOT = 2
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         CALL DGETSLS( 'N', -1, 0, 0, A, 1, B, 1, W, 1, INFO )
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         CALL CHKXER( 'DGETSLS', INFOT, NOUT, LERR, OK )
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         INFOT = 3
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         CALL DGETSLS( 'N', 0, -1, 0, A, 1, B, 1, W, 1, INFO )
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         CALL CHKXER( 'DGETSLS', INFOT, NOUT, LERR, OK )
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         INFOT = 4
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         CALL DGETSLS( 'N', 0, 0, -1, A, 1, B, 1, W, 1, INFO )
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         CALL CHKXER( 'DGETSLS', INFOT, NOUT, LERR, OK )
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         INFOT = 6
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         CALL DGETSLS( 'N', 2, 0, 0, A, 1, B, 2, W, 2, INFO )
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         CALL CHKXER( 'DGETSLS', INFOT, NOUT, LERR, OK )
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         INFOT = 8
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         CALL DGETSLS( 'N', 2, 0, 0, A, 2, B, 1, W, 2, INFO )
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         CALL CHKXER( 'DGETSLS', INFOT, NOUT, LERR, OK )
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         INFOT = 8
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         CALL DGETSLS( 'N', 0, 2, 0, A, 1, B, 1, W, 2, INFO )
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         CALL CHKXER( 'DGETSLS', INFOT, NOUT, LERR, OK )
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*
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*        DGELSS
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*
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         SRNAMT = 'DGELSS'
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         INFOT = 1
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         CALL DGELSS( -1, 0, 0, A, 1, B, 1, S, RCOND, IRNK, W, 1, INFO )
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         CALL CHKXER( 'DGELSS', INFOT, NOUT, LERR, OK )
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         INFOT = 2
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         CALL DGELSS( 0, -1, 0, A, 1, B, 1, S, RCOND, IRNK, W, 1, INFO )
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         CALL CHKXER( 'DGELSS', INFOT, NOUT, LERR, OK )
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         INFOT = 3
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         CALL DGELSS( 0, 0, -1, A, 1, B, 1, S, RCOND, IRNK, W, 1, INFO )
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         CALL CHKXER( 'DGELSS', INFOT, NOUT, LERR, OK )
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         INFOT = 5
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         CALL DGELSS( 2, 0, 0, A, 1, B, 2, S, RCOND, IRNK, W, 2, INFO )
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         CALL CHKXER( 'DGELSS', INFOT, NOUT, LERR, OK )
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         INFOT = 7
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         CALL DGELSS( 2, 0, 0, A, 2, B, 1, S, RCOND, IRNK, W, 2, INFO )
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         CALL CHKXER( 'DGELSS', INFOT, NOUT, LERR, OK )
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*
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*        DGELSY
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*
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         SRNAMT = 'DGELSY'
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         INFOT = 1
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         CALL DGELSY( -1, 0, 0, A, 1, B, 1, IP, RCOND, IRNK, W, 10,
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     $                INFO )
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         CALL CHKXER( 'DGELSY', INFOT, NOUT, LERR, OK )
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         INFOT = 2
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         CALL DGELSY( 0, -1, 0, A, 1, B, 1, IP, RCOND, IRNK, W, 10,
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     $                INFO )
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         CALL CHKXER( 'DGELSY', INFOT, NOUT, LERR, OK )
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         INFOT = 3
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         CALL DGELSY( 0, 0, -1, A, 1, B, 1, IP, RCOND, IRNK, W, 10,
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     $                INFO )
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         CALL CHKXER( 'DGELSY', INFOT, NOUT, LERR, OK )
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         INFOT = 5
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         CALL DGELSY( 2, 0, 0, A, 1, B, 2, IP, RCOND, IRNK, W, 10,
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     $                INFO )
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         CALL CHKXER( 'DGELSY', INFOT, NOUT, LERR, OK )
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         INFOT = 7
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         CALL DGELSY( 2, 0, 0, A, 2, B, 1, IP, RCOND, IRNK, W, 10,
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     $                INFO )
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         CALL CHKXER( 'DGELSY', INFOT, NOUT, LERR, OK )
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         INFOT = 12
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         CALL DGELSY( 2, 2, 1, A, 2, B, 2, IP, RCOND, IRNK, W, 1, INFO )
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         CALL CHKXER( 'DGELSY', INFOT, NOUT, LERR, OK )
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*
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*        DGELSD
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*
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         SRNAMT = 'DGELSD'
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         INFOT = 1
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         CALL DGELSD( -1, 0, 0, A, 1, B, 1, S, RCOND, IRNK, W, 10, IP,
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     $                INFO )
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         CALL CHKXER( 'DGELSD', INFOT, NOUT, LERR, OK )
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         INFOT = 2
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         CALL DGELSD( 0, -1, 0, A, 1, B, 1, S, RCOND, IRNK, W, 10, IP,
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     $                INFO )
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         CALL CHKXER( 'DGELSD', INFOT, NOUT, LERR, OK )
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         INFOT = 3
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         CALL DGELSD( 0, 0, -1, A, 1, B, 1, S, RCOND, IRNK, W, 10, IP,
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     $                INFO )
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         CALL CHKXER( 'DGELSD', INFOT, NOUT, LERR, OK )
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         INFOT = 5
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         CALL DGELSD( 2, 0, 0, A, 1, B, 2, S, RCOND, IRNK, W, 10, IP,
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     $                INFO )
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         CALL CHKXER( 'DGELSD', INFOT, NOUT, LERR, OK )
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         INFOT = 7
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         CALL DGELSD( 2, 0, 0, A, 2, B, 1, S, RCOND, IRNK, W, 10, IP,
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     $                INFO )
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         CALL CHKXER( 'DGELSD', INFOT, NOUT, LERR, OK )
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         INFOT = 12
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         CALL DGELSD( 2, 2, 1, A, 2, B, 2, S, RCOND, IRNK, W, 1, IP,
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     $                INFO )
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         CALL CHKXER( 'DGELSD', INFOT, NOUT, LERR, OK )
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      END IF
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*
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*     Print a summary line.
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*
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      CALL ALAESM( PATH, OK, NOUT )
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*
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      RETURN
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*
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*     End of DERRLS
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*
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      END
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