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*> \brief \b DERRQRT
*
* =========== DOCUMENTATION ===========
*
* Online html documentation available at
* http://www.netlib.org/lapack/explore-html/
*
* Definition:
* ===========
*
* SUBROUTINE DERRQRT( PATH, NUNIT )
*
* .. Scalar Arguments ..
* CHARACTER*3 PATH
* INTEGER NUNIT
* ..
*
*
*> \par Purpose:
* =============
*>
*> \verbatim
*>
*> DERRQRT tests the error exits for the DOUBLE PRECISION routines
*> that use the QRT decomposition of a general matrix.
*> \endverbatim
*
* Arguments:
* ==========
*
*> \param[in] PATH
*> \verbatim
*> PATH is CHARACTER*3
*> The LAPACK path name for the routines to be tested.
*> \endverbatim
*>
*> \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 DERRQRT( PATH, NUNIT )
IMPLICIT NONE
*
* -- 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 ..
CHARACTER*3 PATH
INTEGER NUNIT
* ..
*
* =====================================================================
*
* .. Parameters ..
INTEGER NMAX
PARAMETER ( NMAX = 2 )
* ..
* .. Local Scalars ..
INTEGER I, INFO, J
* ..
* .. Local Arrays ..
DOUBLE PRECISION A( NMAX, NMAX ), T( NMAX, NMAX ), W( NMAX ),
$ C( NMAX, NMAX )
* ..
* .. External Subroutines ..
EXTERNAL ALAESM, CHKXER, DGEQRT2, DGEQRT3, DGEQRT,
$ DGEMQRT
* ..
* .. 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 J = 1, NMAX
DO I = 1, NMAX
A( I, J ) = 1.D0 / DBLE( I+J )
C( I, J ) = 1.D0 / DBLE( I+J )
T( I, J ) = 1.D0 / DBLE( I+J )
END DO
W( J ) = 0.D0
END DO
OK = .TRUE.
*
* Error exits for QRT factorization
*
* DGEQRT
*
SRNAMT = 'DGEQRT'
INFOT = 1
CALL DGEQRT( -1, 0, 1, A, 1, T, 1, W, INFO )
CALL CHKXER( 'DGEQRT', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DGEQRT( 0, -1, 1, A, 1, T, 1, W, INFO )
CALL CHKXER( 'DGEQRT', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL DGEQRT( 0, 0, 0, A, 1, T, 1, W, INFO )
CALL CHKXER( 'DGEQRT', INFOT, NOUT, LERR, OK )
INFOT = 5
CALL DGEQRT( 2, 1, 1, A, 1, T, 1, W, INFO )
CALL CHKXER( 'DGEQRT', INFOT, NOUT, LERR, OK )
INFOT = 7
CALL DGEQRT( 2, 2, 2, A, 2, T, 1, W, INFO )
CALL CHKXER( 'DGEQRT', INFOT, NOUT, LERR, OK )
*
* DGEQRT2
*
SRNAMT = 'DGEQRT2'
INFOT = 1
CALL DGEQRT2( -1, 0, A, 1, T, 1, INFO )
CALL CHKXER( 'DGEQRT2', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DGEQRT2( 0, -1, A, 1, T, 1, INFO )
CALL CHKXER( 'DGEQRT2', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL DGEQRT2( 2, 1, A, 1, T, 1, INFO )
CALL CHKXER( 'DGEQRT2', INFOT, NOUT, LERR, OK )
INFOT = 6
CALL DGEQRT2( 2, 2, A, 2, T, 1, INFO )
CALL CHKXER( 'DGEQRT2', INFOT, NOUT, LERR, OK )
*
* DGEQRT3
*
SRNAMT = 'DGEQRT3'
INFOT = 1
CALL DGEQRT3( -1, 0, A, 1, T, 1, INFO )
CALL CHKXER( 'DGEQRT3', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DGEQRT3( 0, -1, A, 1, T, 1, INFO )
CALL CHKXER( 'DGEQRT3', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL DGEQRT3( 2, 1, A, 1, T, 1, INFO )
CALL CHKXER( 'DGEQRT3', INFOT, NOUT, LERR, OK )
INFOT = 6
CALL DGEQRT3( 2, 2, A, 2, T, 1, INFO )
CALL CHKXER( 'DGEQRT3', INFOT, NOUT, LERR, OK )
*
* DGEMQRT
*
SRNAMT = 'DGEMQRT'
INFOT = 1
CALL DGEMQRT( '/', 'N', 0, 0, 0, 1, A, 1, T, 1, C, 1, W, INFO )
CALL CHKXER( 'DGEMQRT', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DGEMQRT( 'L', '/', 0, 0, 0, 1, A, 1, T, 1, C, 1, W, INFO )
CALL CHKXER( 'DGEMQRT', INFOT, NOUT, LERR, OK )
INFOT = 3
CALL DGEMQRT( 'L', 'N', -1, 0, 0, 1, A, 1, T, 1, C, 1, W, INFO )
CALL CHKXER( 'DGEMQRT', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL DGEMQRT( 'L', 'N', 0, -1, 0, 1, A, 1, T, 1, C, 1, W, INFO )
CALL CHKXER( 'DGEMQRT', INFOT, NOUT, LERR, OK )
INFOT = 5
CALL DGEMQRT( 'L', 'N', 0, 0, -1, 1, A, 1, T, 1, C, 1, W, INFO )
CALL CHKXER( 'DGEMQRT', INFOT, NOUT, LERR, OK )
INFOT = 5
CALL DGEMQRT( 'R', 'N', 0, 0, -1, 1, A, 1, T, 1, C, 1, W, INFO )
CALL CHKXER( 'DGEMQRT', INFOT, NOUT, LERR, OK )
INFOT = 6
CALL DGEMQRT( 'L', 'N', 0, 0, 0, 0, A, 1, T, 1, C, 1, W, INFO )
CALL CHKXER( 'DGEMQRT', INFOT, NOUT, LERR, OK )
INFOT = 8
CALL DGEMQRT( 'R', 'N', 1, 2, 1, 1, A, 1, T, 1, C, 1, W, INFO )
CALL CHKXER( 'DGEMQRT', INFOT, NOUT, LERR, OK )
INFOT = 8
CALL DGEMQRT( 'L', 'N', 2, 1, 1, 1, A, 1, T, 1, C, 1, W, INFO )
CALL CHKXER( 'DGEMQRT', INFOT, NOUT, LERR, OK )
INFOT = 10
CALL DGEMQRT( 'R', 'N', 1, 1, 1, 1, A, 1, T, 0, C, 1, W, INFO )
CALL CHKXER( 'DGEMQRT', INFOT, NOUT, LERR, OK )
INFOT = 12
CALL DGEMQRT( 'L', 'N', 1, 1, 1, 1, A, 1, T, 1, C, 0, W, INFO )
CALL CHKXER( 'DGEMQRT', INFOT, NOUT, LERR, OK )
*
* Print a summary line.
*
CALL ALAESM( PATH, OK, NOUT )
*
RETURN
*
* End of DERRQRT
*
END
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