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SUBROUTINE DERRQP( PATH, NUNIT )
*
* -- LAPACK test routine (version 3.0) --
* Univ. of Tennessee, Univ. of California Berkeley, NAG Ltd.,
* Courant Institute, Argonne National Lab, and Rice University
* June 30, 1999
*
* .. Scalar Arguments ..
CHARACTER*3 PATH
INTEGER NUNIT
* ..
*
* Purpose
* =======
*
* DERRQP tests the error exits for DGEQPF and SGEQP3.
*
* Arguments
* =========
*
* PATH (input) CHARACTER*3
* The LAPACK path name for the routines to be tested.
*
* NUNIT (input) INTEGER
* The unit number for output.
*
* =====================================================================
*
* .. Parameters ..
INTEGER NMAX
PARAMETER ( NMAX = 2 )
* ..
* .. Local Scalars ..
CHARACTER*2 C2
INTEGER INFO, LW
* ..
* .. Local Arrays ..
INTEGER IP( NMAX )
DOUBLE PRECISION A( NMAX, NMAX ), TAU( NMAX ), W( 3*NMAX+1 )
* ..
* .. External Functions ..
LOGICAL LSAMEN
EXTERNAL LSAMEN
* ..
* .. External Subroutines ..
EXTERNAL ALAESM, CHKXER, DGEQP3, DGEQPF
* ..
* .. Scalars in Common ..
LOGICAL LERR, OK
CHARACTER*6 SRNAMT
INTEGER INFOT, NOUT
* ..
* .. Common blocks ..
COMMON / INFOC / INFOT, NOUT, OK, LERR
COMMON / SRNAMC / SRNAMT
* ..
* .. Executable Statements ..
*
NOUT = NUNIT
WRITE( NOUT, FMT = * )
C2 = PATH( 2: 3 )
LW = 3*NMAX + 1
A( 1, 1 ) = 1.0D+0
A( 1, 2 ) = 2.0D+0
A( 2, 2 ) = 3.0D+0
A( 2, 1 ) = 4.0D+0
OK = .TRUE.
*
IF( LSAMEN( 2, C2, 'QP' ) ) THEN
*
* Test error exits for QR factorization with pivoting
*
* DGEQPF
*
SRNAMT = 'DGEQPF'
INFOT = 1
CALL DGEQPF( -1, 0, A, 1, IP, TAU, W, INFO )
CALL CHKXER( 'DGEQPF', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DGEQPF( 0, -1, A, 1, IP, TAU, W, INFO )
CALL CHKXER( 'DGEQPF', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL DGEQPF( 2, 0, A, 1, IP, TAU, W, INFO )
CALL CHKXER( 'DGEQPF', INFOT, NOUT, LERR, OK )
*
* DGEQP3
*
SRNAMT = 'DGEQP3'
INFOT = 1
CALL DGEQP3( -1, 0, A, 1, IP, TAU, W, LW, INFO )
CALL CHKXER( 'DGEQP3', INFOT, NOUT, LERR, OK )
INFOT = 2
CALL DGEQP3( 1, -1, A, 1, IP, TAU, W, LW, INFO )
CALL CHKXER( 'DGEQP3', INFOT, NOUT, LERR, OK )
INFOT = 4
CALL DGEQP3( 1, 2, A, 0, IP, TAU, W, LW, INFO )
CALL CHKXER( 'DGEQP3', INFOT, NOUT, LERR, OK )
INFOT = 8
CALL DGEQP3( 2, 2, A, 2, IP, TAU, W, LW-1, INFO )
CALL CHKXER( 'DGEQP3', INFOT, NOUT, LERR, OK )
END IF
*
* Print a summary line.
*
CALL ALAESM( PATH, OK, NOUT )
*
RETURN
*
* End of DERRQP
*
END
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