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136 lines
3.2 KiB
136 lines
3.2 KiB
2 years ago
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*> \brief \b DERRQP
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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 DERRQP( 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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*> DERRQP tests the error exits for DGEQP3.
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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 DERRQP( 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 = 3 )
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* ..
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* .. Local Scalars ..
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CHARACTER*2 C2
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INTEGER INFO, LW
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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 ), TAU( NMAX ), W( 3*NMAX+1 )
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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, DGEQP3
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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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LW = 3*NMAX + 1
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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, 'QP' ) ) THEN
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*
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* Test error exits for QR factorization with pivoting
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*
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* DGEQP3
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*
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SRNAMT = 'DGEQP3'
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INFOT = 1
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CALL DGEQP3( -1, 0, A, 1, IP, TAU, W, LW, INFO )
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CALL CHKXER( 'DGEQP3', INFOT, NOUT, LERR, OK )
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INFOT = 2
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CALL DGEQP3( 1, -1, A, 1, IP, TAU, W, LW, INFO )
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CALL CHKXER( 'DGEQP3', INFOT, NOUT, LERR, OK )
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INFOT = 4
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CALL DGEQP3( 2, 3, A, 1, IP, TAU, W, LW, INFO )
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CALL CHKXER( 'DGEQP3', INFOT, NOUT, LERR, OK )
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INFOT = 8
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CALL DGEQP3( 2, 2, A, 2, IP, TAU, W, LW-10, INFO )
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CALL CHKXER( 'DGEQP3', 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 DERRQP
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*
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END
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